diff options
| author | Matt A. Tobin <email@mattatobin.com> | 2020-04-07 23:30:51 -0400 |
|---|---|---|
| committer | wolfbeast <mcwerewolf@wolfbeast.com> | 2020-04-14 13:26:42 +0200 |
| commit | 277f2116b6660e9bbe7f5d67524be57eceb49b8b (patch) | |
| tree | 4595f7cc71418f71b9a97dfaeb03a30aa60f336a /media/libaom/src/third_party/fastfeat | |
| parent | d270404436f6e84ffa3b92af537ac721bf10d66e (diff) | |
| download | UXP-277f2116b6660e9bbe7f5d67524be57eceb49b8b.tar UXP-277f2116b6660e9bbe7f5d67524be57eceb49b8b.tar.gz UXP-277f2116b6660e9bbe7f5d67524be57eceb49b8b.tar.lz UXP-277f2116b6660e9bbe7f5d67524be57eceb49b8b.tar.xz UXP-277f2116b6660e9bbe7f5d67524be57eceb49b8b.zip | |
Move aom source to a sub-directory under media/libaom
There is no damned reason to treat this differently than any other media lib given its license and there never was.
Diffstat (limited to 'media/libaom/src/third_party/fastfeat')
| -rw-r--r-- | media/libaom/src/third_party/fastfeat/LICENSE | 30 | ||||
| -rw-r--r-- | media/libaom/src/third_party/fastfeat/README.libvpx | 39 | ||||
| -rw-r--r-- | media/libaom/src/third_party/fastfeat/fast.c | 22 | ||||
| -rw-r--r-- | media/libaom/src/third_party/fastfeat/fast.h | 20 | ||||
| -rw-r--r-- | media/libaom/src/third_party/fastfeat/fast_9.c | 5911 | ||||
| -rw-r--r-- | media/libaom/src/third_party/fastfeat/nonmax.c | 121 |
6 files changed, 6143 insertions, 0 deletions
diff --git a/media/libaom/src/third_party/fastfeat/LICENSE b/media/libaom/src/third_party/fastfeat/LICENSE new file mode 100644 index 000000000..f347008d6 --- /dev/null +++ b/media/libaom/src/third_party/fastfeat/LICENSE @@ -0,0 +1,30 @@ +Copyright (c) 2006, 2008 Edward Rosten +All rights reserved. + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions +are met: + + + *Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. + + *Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in the + documentation and/or other materials provided with the distribution. + + *Neither the name of the University of Cambridge nor the names of + its contributors may be used to endorse or promote products derived + from this software without specific prior written permission. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR +CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, +EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, +PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR +PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF +LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING +NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS +SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. diff --git a/media/libaom/src/third_party/fastfeat/README.libvpx b/media/libaom/src/third_party/fastfeat/README.libvpx new file mode 100644 index 000000000..1e58a303b --- /dev/null +++ b/media/libaom/src/third_party/fastfeat/README.libvpx @@ -0,0 +1,39 @@ +URL: https://github.com/edrosten/fast-C-src +Version: 391d5e939eb1545d24c10533d7de424db8d9c191 +License: BSD +License File: LICENSE + +Description: +Library to compute FAST features with non-maximum suppression. + +The files are valid C and C++ code, and have no special requirements for +compiling, and they do not depend on any libraries. Just compile them along with +the rest of your project. + +To use the functions, #include "fast.h" + +The corner detectors have the following prototype (where X is 9, 10, 11 or 12): + +xy* fastX_detect_nonmax(const unsigned char * data, int xsize, int ysize, int stride, int threshold, int* numcorners) + +Where xy is the following simple struct typedef: + +typedef struct +{ + int x, y; +} xy; + +The image is passed in as a block of data and dimensions, and the list of +corners is returned as an array of xy structs, and an integer (numcorners) +with the number of corners returned. The data can be deallocated with free(). +Nonmaximal suppression is performed on the corners. Note that the stride +is the number of bytes between rows. If your image has no padding, then this +is the same as xsize. + +The detection, scoring and nonmaximal suppression are available as individual +functions. To see how to use the individual functions, see fast.c + +Local Modifications: +Add lines to turn off clang formatting for these files +Remove Fast 10, 11 and 12 +Convert tabs to spaces diff --git a/media/libaom/src/third_party/fastfeat/fast.c b/media/libaom/src/third_party/fastfeat/fast.c new file mode 100644 index 000000000..0d7efc154 --- /dev/null +++ b/media/libaom/src/third_party/fastfeat/fast.c @@ -0,0 +1,22 @@ +// clang-format off +#include <stdlib.h> +#include "fast.h" + + +xy* fast9_detect_nonmax(const byte* im, int xsize, int ysize, int stride, int b, int* ret_num_corners) +{ + xy* corners; + int num_corners; + int* scores; + xy* nonmax; + + corners = fast9_detect(im, xsize, ysize, stride, b, &num_corners); + scores = fast9_score(im, stride, corners, num_corners, b); + nonmax = nonmax_suppression(corners, scores, num_corners, ret_num_corners); + + free(corners); + free(scores); + + return nonmax; +} +// clang-format on diff --git a/media/libaom/src/third_party/fastfeat/fast.h b/media/libaom/src/third_party/fastfeat/fast.h new file mode 100644 index 000000000..a00730e3d --- /dev/null +++ b/media/libaom/src/third_party/fastfeat/fast.h @@ -0,0 +1,20 @@ +// clang-format off +#ifndef FAST_H +#define FAST_H + +typedef struct { int x, y; } xy; +typedef unsigned char byte; + +int fast9_corner_score(const byte* p, const int pixel[], int bstart); + +xy* fast9_detect(const byte* im, int xsize, int ysize, int stride, int b, int* ret_num_corners); + +int* fast9_score(const byte* i, int stride, xy* corners, int num_corners, int b); + +xy* fast9_detect_nonmax(const byte* im, int xsize, int ysize, int stride, int b, int* ret_num_corners); + +xy* nonmax_suppression(const xy* corners, const int* scores, int num_corners, int* ret_num_nonmax); + + +#endif +// clang-format on diff --git a/media/libaom/src/third_party/fastfeat/fast_9.c b/media/libaom/src/third_party/fastfeat/fast_9.c new file mode 100644 index 000000000..ec167a953 --- /dev/null +++ b/media/libaom/src/third_party/fastfeat/fast_9.c @@ -0,0 +1,5911 @@ +// clang-format off +/*This is mechanically generated code*/ +#include <stdlib.h> + +typedef struct { int x, y; } xy; +typedef unsigned char byte; + +int fast9_corner_score(const byte* p, const int pixel[], int bstart) +{ + int bmin = bstart; + int bmax = 255; + int b = (bmax + bmin)/2; + + /*Compute the score using binary search*/ + for(;;) + { + int cb = *p + b; + int c_b= *p - b; + + + if( p[pixel[0]] > cb) + if( p[pixel[1]] > cb) + if( p[pixel[2]] > cb) + if( p[pixel[3]] > cb) + if( p[pixel[4]] > cb) + if( p[pixel[5]] > cb) + if( p[pixel[6]] > cb) + if( p[pixel[7]] > cb) + if( p[pixel[8]] > cb) + goto is_a_corner; + else + if( p[pixel[15]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else if( p[pixel[7]] < c_b) + if( p[pixel[14]] > cb) + if( p[pixel[15]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else if( p[pixel[14]] < c_b) + if( p[pixel[8]] < c_b) + if( p[pixel[9]] < c_b) + if( p[pixel[10]] < c_b) + if( p[pixel[11]] < c_b) + if( p[pixel[12]] < c_b) + if( p[pixel[13]] < c_b) + if( p[pixel[15]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[14]] > cb) + if( p[pixel[15]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else if( p[pixel[6]] < c_b) + if( p[pixel[15]] > cb) + if( p[pixel[13]] > cb) + if( p[pixel[14]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else if( p[pixel[13]] < c_b) + if( p[pixel[7]] < c_b) + if( p[pixel[8]] < c_b) + if( p[pixel[9]] < c_b) + if( p[pixel[10]] < c_b) + if( p[pixel[11]] < c_b) + if( p[pixel[12]] < c_b) + if( p[pixel[14]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[7]] < c_b) + if( p[pixel[8]] < c_b) + if( p[pixel[9]] < c_b) + if( p[pixel[10]] < c_b) + if( p[pixel[11]] < c_b) + if( p[pixel[12]] < c_b) + if( p[pixel[13]] < c_b) + if( p[pixel[14]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[13]] > cb) + if( p[pixel[14]] > cb) + if( p[pixel[15]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else if( p[pixel[13]] < c_b) + if( p[pixel[7]] < c_b) + if( p[pixel[8]] < c_b) + if( p[pixel[9]] < c_b) + if( p[pixel[10]] < c_b) + if( p[pixel[11]] < c_b) + if( p[pixel[12]] < c_b) + if( p[pixel[14]] < c_b) + if( p[pixel[15]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else if( p[pixel[5]] < c_b) + if( p[pixel[14]] > cb) + if( p[pixel[12]] > cb) + if( p[pixel[13]] > cb) + if( p[pixel[15]] > cb) + goto is_a_corner; + else + if( p[pixel[6]] > cb) + if( p[pixel[7]] > cb) + if( p[pixel[8]] > cb) + if( p[pixel[9]] > cb) + if( p[pixel[10]] > cb) + if( p[pixel[11]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else if( p[pixel[12]] < c_b) + if( p[pixel[6]] < c_b) + if( p[pixel[7]] < c_b) + if( p[pixel[8]] < c_b) + if( p[pixel[9]] < c_b) + if( p[pixel[10]] < c_b) + if( p[pixel[11]] < c_b) + if( p[pixel[13]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else if( p[pixel[14]] < c_b) + if( p[pixel[7]] < c_b) + if( p[pixel[8]] < c_b) + if( p[pixel[9]] < c_b) + if( p[pixel[10]] < c_b) + if( p[pixel[11]] < c_b) + if( p[pixel[12]] < c_b) + if( p[pixel[13]] < c_b) + if( p[pixel[6]] < c_b) + goto is_a_corner; + else + if( p[pixel[15]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[6]] < c_b) + if( p[pixel[7]] < c_b) + if( p[pixel[8]] < c_b) + if( p[pixel[9]] < c_b) + if( p[pixel[10]] < c_b) + if( p[pixel[11]] < c_b) + if( p[pixel[12]] < c_b) + if( p[pixel[13]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[12]] > cb) + if( p[pixel[13]] > cb) + if( p[pixel[14]] > cb) + if( p[pixel[15]] > cb) + goto is_a_corner; + else + if( p[pixel[6]] > cb) + if( p[pixel[7]] > cb) + if( p[pixel[8]] > cb) + if( p[pixel[9]] > cb) + if( p[pixel[10]] > cb) + if( p[pixel[11]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else if( p[pixel[12]] < c_b) + if( p[pixel[7]] < c_b) + if( p[pixel[8]] < c_b) + if( p[pixel[9]] < c_b) + if( p[pixel[10]] < c_b) + if( p[pixel[11]] < c_b) + if( p[pixel[13]] < c_b) + if( p[pixel[14]] < c_b) + if( p[pixel[6]] < c_b) + goto is_a_corner; + else + if( p[pixel[15]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else if( p[pixel[4]] < c_b) + if( p[pixel[13]] > cb) + if( p[pixel[11]] > cb) + if( p[pixel[12]] > cb) + if( p[pixel[14]] > cb) + if( p[pixel[15]] > cb) + goto is_a_corner; + else + if( p[pixel[6]] > cb) + if( p[pixel[7]] > cb) + if( p[pixel[8]] > cb) + if( p[pixel[9]] > cb) + if( p[pixel[10]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[5]] > cb) + if( p[pixel[6]] > cb) + if( p[pixel[7]] > cb) + if( p[pixel[8]] > cb) + if( p[pixel[9]] > cb) + if( p[pixel[10]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else if( p[pixel[11]] < c_b) + if( p[pixel[5]] < c_b) + if( p[pixel[6]] < c_b) + if( p[pixel[7]] < c_b) + if( p[pixel[8]] < c_b) + if( p[pixel[9]] < c_b) + if( p[pixel[10]] < c_b) + if( p[pixel[12]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else if( p[pixel[13]] < c_b) + if( p[pixel[7]] < c_b) + if( p[pixel[8]] < c_b) + if( p[pixel[9]] < c_b) + if( p[pixel[10]] < c_b) + if( p[pixel[11]] < c_b) + if( p[pixel[12]] < c_b) + if( p[pixel[6]] < c_b) + if( p[pixel[5]] < c_b) + goto is_a_corner; + else + if( p[pixel[14]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[14]] < c_b) + if( p[pixel[15]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[5]] < c_b) + if( p[pixel[6]] < c_b) + if( p[pixel[7]] < c_b) + if( p[pixel[8]] < c_b) + if( p[pixel[9]] < c_b) + if( p[pixel[10]] < c_b) + if( p[pixel[11]] < c_b) + if( p[pixel[12]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[11]] > cb) + if( p[pixel[12]] > cb) + if( p[pixel[13]] > cb) + if( p[pixel[14]] > cb) + if( p[pixel[15]] > cb) + goto is_a_corner; + else + if( p[pixel[6]] > cb) + if( p[pixel[7]] > cb) + if( p[pixel[8]] > cb) + if( p[pixel[9]] > cb) + if( p[pixel[10]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[5]] > cb) + if( p[pixel[6]] > cb) + if( p[pixel[7]] > cb) + if( p[pixel[8]] > cb) + if( p[pixel[9]] > cb) + if( p[pixel[10]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else if( p[pixel[11]] < c_b) + if( p[pixel[7]] < c_b) + if( p[pixel[8]] < c_b) + if( p[pixel[9]] < c_b) + if( p[pixel[10]] < c_b) + if( p[pixel[12]] < c_b) + if( p[pixel[13]] < c_b) + if( p[pixel[6]] < c_b) + if( p[pixel[5]] < c_b) + goto is_a_corner; + else + if( p[pixel[14]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[14]] < c_b) + if( p[pixel[15]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else if( p[pixel[3]] < c_b) + if( p[pixel[10]] > cb) + if( p[pixel[11]] > cb) + if( p[pixel[12]] > cb) + if( p[pixel[13]] > cb) + if( p[pixel[14]] > cb) + if( p[pixel[15]] > cb) + goto is_a_corner; + else + if( p[pixel[6]] > cb) + if( p[pixel[7]] > cb) + if( p[pixel[8]] > cb) + if( p[pixel[9]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[5]] > cb) + if( p[pixel[6]] > cb) + if( p[pixel[7]] > cb) + if( p[pixel[8]] > cb) + if( p[pixel[9]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[4]] > cb) + if( p[pixel[5]] > cb) + if( p[pixel[6]] > cb) + if( p[pixel[7]] > cb) + if( p[pixel[8]] > cb) + if( p[pixel[9]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else if( p[pixel[10]] < c_b) + if( p[pixel[7]] < c_b) + if( p[pixel[8]] < c_b) + if( p[pixel[9]] < c_b) + if( p[pixel[11]] < c_b) + if( p[pixel[6]] < c_b) + if( p[pixel[5]] < c_b) + if( p[pixel[4]] < c_b) + goto is_a_corner; + else + if( p[pixel[12]] < c_b) + if( p[pixel[13]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[12]] < c_b) + if( p[pixel[13]] < c_b) + if( p[pixel[14]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[12]] < c_b) + if( p[pixel[13]] < c_b) + if( p[pixel[14]] < c_b) + if( p[pixel[15]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[10]] > cb) + if( p[pixel[11]] > cb) + if( p[pixel[12]] > cb) + if( p[pixel[13]] > cb) + if( p[pixel[14]] > cb) + if( p[pixel[15]] > cb) + goto is_a_corner; + else + if( p[pixel[6]] > cb) + if( p[pixel[7]] > cb) + if( p[pixel[8]] > cb) + if( p[pixel[9]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[5]] > cb) + if( p[pixel[6]] > cb) + if( p[pixel[7]] > cb) + if( p[pixel[8]] > cb) + if( p[pixel[9]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[4]] > cb) + if( p[pixel[5]] > cb) + if( p[pixel[6]] > cb) + if( p[pixel[7]] > cb) + if( p[pixel[8]] > cb) + if( p[pixel[9]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else if( p[pixel[10]] < c_b) + if( p[pixel[7]] < c_b) + if( p[pixel[8]] < c_b) + if( p[pixel[9]] < c_b) + if( p[pixel[11]] < c_b) + if( p[pixel[12]] < c_b) + if( p[pixel[6]] < c_b) + if( p[pixel[5]] < c_b) + if( p[pixel[4]] < c_b) + goto is_a_corner; + else + if( p[pixel[13]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[13]] < c_b) + if( p[pixel[14]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[13]] < c_b) + if( p[pixel[14]] < c_b) + if( p[pixel[15]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else if( p[pixel[2]] < c_b) + if( p[pixel[9]] > cb) + if( p[pixel[10]] > cb) + if( p[pixel[11]] > cb) + if( p[pixel[12]] > cb) + if( p[pixel[13]] > cb) + if( p[pixel[14]] > cb) + if( p[pixel[15]] > cb) + goto is_a_corner; + else + if( p[pixel[6]] > cb) + if( p[pixel[7]] > cb) + if( p[pixel[8]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[5]] > cb) + if( p[pixel[6]] > cb) + if( p[pixel[7]] > cb) + if( p[pixel[8]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[4]] > cb) + if( p[pixel[5]] > cb) + if( p[pixel[6]] > cb) + if( p[pixel[7]] > cb) + if( p[pixel[8]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[3]] > cb) + if( p[pixel[4]] > cb) + if( p[pixel[5]] > cb) + if( p[pixel[6]] > cb) + if( p[pixel[7]] > cb) + if( p[pixel[8]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else if( p[pixel[9]] < c_b) + if( p[pixel[7]] < c_b) + if( p[pixel[8]] < c_b) + if( p[pixel[10]] < c_b) + if( p[pixel[6]] < c_b) + if( p[pixel[5]] < c_b) + if( p[pixel[4]] < c_b) + if( p[pixel[3]] < c_b) + goto is_a_corner; + else + if( p[pixel[11]] < c_b) + if( p[pixel[12]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[11]] < c_b) + if( p[pixel[12]] < c_b) + if( p[pixel[13]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[11]] < c_b) + if( p[pixel[12]] < c_b) + if( p[pixel[13]] < c_b) + if( p[pixel[14]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[11]] < c_b) + if( p[pixel[12]] < c_b) + if( p[pixel[13]] < c_b) + if( p[pixel[14]] < c_b) + if( p[pixel[15]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[9]] > cb) + if( p[pixel[10]] > cb) + if( p[pixel[11]] > cb) + if( p[pixel[12]] > cb) + if( p[pixel[13]] > cb) + if( p[pixel[14]] > cb) + if( p[pixel[15]] > cb) + goto is_a_corner; + else + if( p[pixel[6]] > cb) + if( p[pixel[7]] > cb) + if( p[pixel[8]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[5]] > cb) + if( p[pixel[6]] > cb) + if( p[pixel[7]] > cb) + if( p[pixel[8]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[4]] > cb) + if( p[pixel[5]] > cb) + if( p[pixel[6]] > cb) + if( p[pixel[7]] > cb) + if( p[pixel[8]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[3]] > cb) + if( p[pixel[4]] > cb) + if( p[pixel[5]] > cb) + if( p[pixel[6]] > cb) + if( p[pixel[7]] > cb) + if( p[pixel[8]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else if( p[pixel[9]] < c_b) + if( p[pixel[7]] < c_b) + if( p[pixel[8]] < c_b) + if( p[pixel[10]] < c_b) + if( p[pixel[11]] < c_b) + if( p[pixel[6]] < c_b) + if( p[pixel[5]] < c_b) + if( p[pixel[4]] < c_b) + if( p[pixel[3]] < c_b) + goto is_a_corner; + else + if( p[pixel[12]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[12]] < c_b) + if( p[pixel[13]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[12]] < c_b) + if( p[pixel[13]] < c_b) + if( p[pixel[14]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[12]] < c_b) + if( p[pixel[13]] < c_b) + if( p[pixel[14]] < c_b) + if( p[pixel[15]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else if( p[pixel[1]] < c_b) + if( p[pixel[8]] > cb) + if( p[pixel[9]] > cb) + if( p[pixel[10]] > cb) + if( p[pixel[11]] > cb) + if( p[pixel[12]] > cb) + if( p[pixel[13]] > cb) + if( p[pixel[14]] > cb) + if( p[pixel[15]] > cb) + goto is_a_corner; + else + if( p[pixel[6]] > cb) + if( p[pixel[7]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[5]] > cb) + if( p[pixel[6]] > cb) + if( p[pixel[7]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[4]] > cb) + if( p[pixel[5]] > cb) + if( p[pixel[6]] > cb) + if( p[pixel[7]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[3]] > cb) + if( p[pixel[4]] > cb) + if( p[pixel[5]] > cb) + if( p[pixel[6]] > cb) + if( p[pixel[7]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[2]] > cb) + if( p[pixel[3]] > cb) + if( p[pixel[4]] > cb) + if( p[pixel[5]] > cb) + if( p[pixel[6]] > cb) + if( p[pixel[7]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else if( p[pixel[8]] < c_b) + if( p[pixel[7]] < c_b) + if( p[pixel[9]] < c_b) + if( p[pixel[6]] < c_b) + if( p[pixel[5]] < c_b) + if( p[pixel[4]] < c_b) + if( p[pixel[3]] < c_b) + if( p[pixel[2]] < c_b) + goto is_a_corner; + else + if( p[pixel[10]] < c_b) + if( p[pixel[11]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[10]] < c_b) + if( p[pixel[11]] < c_b) + if( p[pixel[12]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[10]] < c_b) + if( p[pixel[11]] < c_b) + if( p[pixel[12]] < c_b) + if( p[pixel[13]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[10]] < c_b) + if( p[pixel[11]] < c_b) + if( p[pixel[12]] < c_b) + if( p[pixel[13]] < c_b) + if( p[pixel[14]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[10]] < c_b) + if( p[pixel[11]] < c_b) + if( p[pixel[12]] < c_b) + if( p[pixel[13]] < c_b) + if( p[pixel[14]] < c_b) + if( p[pixel[15]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[8]] > cb) + if( p[pixel[9]] > cb) + if( p[pixel[10]] > cb) + if( p[pixel[11]] > cb) + if( p[pixel[12]] > cb) + if( p[pixel[13]] > cb) + if( p[pixel[14]] > cb) + if( p[pixel[15]] > cb) + goto is_a_corner; + else + if( p[pixel[6]] > cb) + if( p[pixel[7]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[5]] > cb) + if( p[pixel[6]] > cb) + if( p[pixel[7]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[4]] > cb) + if( p[pixel[5]] > cb) + if( p[pixel[6]] > cb) + if( p[pixel[7]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[3]] > cb) + if( p[pixel[4]] > cb) + if( p[pixel[5]] > cb) + if( p[pixel[6]] > cb) + if( p[pixel[7]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[2]] > cb) + if( p[pixel[3]] > cb) + if( p[pixel[4]] > cb) + if( p[pixel[5]] > cb) + if( p[pixel[6]] > cb) + if( p[pixel[7]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else if( p[pixel[8]] < c_b) + if( p[pixel[7]] < c_b) + if( p[pixel[9]] < c_b) + if( p[pixel[10]] < c_b) + if( p[pixel[6]] < c_b) + if( p[pixel[5]] < c_b) + if( p[pixel[4]] < c_b) + if( p[pixel[3]] < c_b) + if( p[pixel[2]] < c_b) + goto is_a_corner; + else + if( p[pixel[11]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[11]] < c_b) + if( p[pixel[12]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[11]] < c_b) + if( p[pixel[12]] < c_b) + if( p[pixel[13]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[11]] < c_b) + if( p[pixel[12]] < c_b) + if( p[pixel[13]] < c_b) + if( p[pixel[14]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[11]] < c_b) + if( p[pixel[12]] < c_b) + if( p[pixel[13]] < c_b) + if( p[pixel[14]] < c_b) + if( p[pixel[15]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else if( p[pixel[0]] < c_b) + if( p[pixel[1]] > cb) + if( p[pixel[8]] > cb) + if( p[pixel[7]] > cb) + if( p[pixel[9]] > cb) + if( p[pixel[6]] > cb) + if( p[pixel[5]] > cb) + if( p[pixel[4]] > cb) + if( p[pixel[3]] > cb) + if( p[pixel[2]] > cb) + goto is_a_corner; + else + if( p[pixel[10]] > cb) + if( p[pixel[11]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[10]] > cb) + if( p[pixel[11]] > cb) + if( p[pixel[12]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[10]] > cb) + if( p[pixel[11]] > cb) + if( p[pixel[12]] > cb) + if( p[pixel[13]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[10]] > cb) + if( p[pixel[11]] > cb) + if( p[pixel[12]] > cb) + if( p[pixel[13]] > cb) + if( p[pixel[14]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[10]] > cb) + if( p[pixel[11]] > cb) + if( p[pixel[12]] > cb) + if( p[pixel[13]] > cb) + if( p[pixel[14]] > cb) + if( p[pixel[15]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else if( p[pixel[8]] < c_b) + if( p[pixel[9]] < c_b) + if( p[pixel[10]] < c_b) + if( p[pixel[11]] < c_b) + if( p[pixel[12]] < c_b) + if( p[pixel[13]] < c_b) + if( p[pixel[14]] < c_b) + if( p[pixel[15]] < c_b) + goto is_a_corner; + else + if( p[pixel[6]] < c_b) + if( p[pixel[7]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[5]] < c_b) + if( p[pixel[6]] < c_b) + if( p[pixel[7]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[4]] < c_b) + if( p[pixel[5]] < c_b) + if( p[pixel[6]] < c_b) + if( p[pixel[7]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[3]] < c_b) + if( p[pixel[4]] < c_b) + if( p[pixel[5]] < c_b) + if( p[pixel[6]] < c_b) + if( p[pixel[7]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[2]] < c_b) + if( p[pixel[3]] < c_b) + if( p[pixel[4]] < c_b) + if( p[pixel[5]] < c_b) + if( p[pixel[6]] < c_b) + if( p[pixel[7]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else if( p[pixel[1]] < c_b) + if( p[pixel[2]] > cb) + if( p[pixel[9]] > cb) + if( p[pixel[7]] > cb) + if( p[pixel[8]] > cb) + if( p[pixel[10]] > cb) + if( p[pixel[6]] > cb) + if( p[pixel[5]] > cb) + if( p[pixel[4]] > cb) + if( p[pixel[3]] > cb) + goto is_a_corner; + else + if( p[pixel[11]] > cb) + if( p[pixel[12]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[11]] > cb) + if( p[pixel[12]] > cb) + if( p[pixel[13]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[11]] > cb) + if( p[pixel[12]] > cb) + if( p[pixel[13]] > cb) + if( p[pixel[14]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[11]] > cb) + if( p[pixel[12]] > cb) + if( p[pixel[13]] > cb) + if( p[pixel[14]] > cb) + if( p[pixel[15]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else if( p[pixel[9]] < c_b) + if( p[pixel[10]] < c_b) + if( p[pixel[11]] < c_b) + if( p[pixel[12]] < c_b) + if( p[pixel[13]] < c_b) + if( p[pixel[14]] < c_b) + if( p[pixel[15]] < c_b) + goto is_a_corner; + else + if( p[pixel[6]] < c_b) + if( p[pixel[7]] < c_b) + if( p[pixel[8]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[5]] < c_b) + if( p[pixel[6]] < c_b) + if( p[pixel[7]] < c_b) + if( p[pixel[8]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[4]] < c_b) + if( p[pixel[5]] < c_b) + if( p[pixel[6]] < c_b) + if( p[pixel[7]] < c_b) + if( p[pixel[8]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[3]] < c_b) + if( p[pixel[4]] < c_b) + if( p[pixel[5]] < c_b) + if( p[pixel[6]] < c_b) + if( p[pixel[7]] < c_b) + if( p[pixel[8]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else if( p[pixel[2]] < c_b) + if( p[pixel[3]] > cb) + if( p[pixel[10]] > cb) + if( p[pixel[7]] > cb) + if( p[pixel[8]] > cb) + if( p[pixel[9]] > cb) + if( p[pixel[11]] > cb) + if( p[pixel[6]] > cb) + if( p[pixel[5]] > cb) + if( p[pixel[4]] > cb) + goto is_a_corner; + else + if( p[pixel[12]] > cb) + if( p[pixel[13]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[12]] > cb) + if( p[pixel[13]] > cb) + if( p[pixel[14]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[12]] > cb) + if( p[pixel[13]] > cb) + if( p[pixel[14]] > cb) + if( p[pixel[15]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else if( p[pixel[10]] < c_b) + if( p[pixel[11]] < c_b) + if( p[pixel[12]] < c_b) + if( p[pixel[13]] < c_b) + if( p[pixel[14]] < c_b) + if( p[pixel[15]] < c_b) + goto is_a_corner; + else + if( p[pixel[6]] < c_b) + if( p[pixel[7]] < c_b) + if( p[pixel[8]] < c_b) + if( p[pixel[9]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[5]] < c_b) + if( p[pixel[6]] < c_b) + if( p[pixel[7]] < c_b) + if( p[pixel[8]] < c_b) + if( p[pixel[9]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[4]] < c_b) + if( p[pixel[5]] < c_b) + if( p[pixel[6]] < c_b) + if( p[pixel[7]] < c_b) + if( p[pixel[8]] < c_b) + if( p[pixel[9]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else if( p[pixel[3]] < c_b) + if( p[pixel[4]] > cb) + if( p[pixel[13]] > cb) + if( p[pixel[7]] > cb) + if( p[pixel[8]] > cb) + if( p[pixel[9]] > cb) + if( p[pixel[10]] > cb) + if( p[pixel[11]] > cb) + if( p[pixel[12]] > cb) + if( p[pixel[6]] > cb) + if( p[pixel[5]] > cb) + goto is_a_corner; + else + if( p[pixel[14]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[14]] > cb) + if( p[pixel[15]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else if( p[pixel[13]] < c_b) + if( p[pixel[11]] > cb) + if( p[pixel[5]] > cb) + if( p[pixel[6]] > cb) + if( p[pixel[7]] > cb) + if( p[pixel[8]] > cb) + if( p[pixel[9]] > cb) + if( p[pixel[10]] > cb) + if( p[pixel[12]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else if( p[pixel[11]] < c_b) + if( p[pixel[12]] < c_b) + if( p[pixel[14]] < c_b) + if( p[pixel[15]] < c_b) + goto is_a_corner; + else + if( p[pixel[6]] < c_b) + if( p[pixel[7]] < c_b) + if( p[pixel[8]] < c_b) + if( p[pixel[9]] < c_b) + if( p[pixel[10]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[5]] < c_b) + if( p[pixel[6]] < c_b) + if( p[pixel[7]] < c_b) + if( p[pixel[8]] < c_b) + if( p[pixel[9]] < c_b) + if( p[pixel[10]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[5]] > cb) + if( p[pixel[6]] > cb) + if( p[pixel[7]] > cb) + if( p[pixel[8]] > cb) + if( p[pixel[9]] > cb) + if( p[pixel[10]] > cb) + if( p[pixel[11]] > cb) + if( p[pixel[12]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else if( p[pixel[4]] < c_b) + if( p[pixel[5]] > cb) + if( p[pixel[14]] > cb) + if( p[pixel[7]] > cb) + if( p[pixel[8]] > cb) + if( p[pixel[9]] > cb) + if( p[pixel[10]] > cb) + if( p[pixel[11]] > cb) + if( p[pixel[12]] > cb) + if( p[pixel[13]] > cb) + if( p[pixel[6]] > cb) + goto is_a_corner; + else + if( p[pixel[15]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else if( p[pixel[14]] < c_b) + if( p[pixel[12]] > cb) + if( p[pixel[6]] > cb) + if( p[pixel[7]] > cb) + if( p[pixel[8]] > cb) + if( p[pixel[9]] > cb) + if( p[pixel[10]] > cb) + if( p[pixel[11]] > cb) + if( p[pixel[13]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else if( p[pixel[12]] < c_b) + if( p[pixel[13]] < c_b) + if( p[pixel[15]] < c_b) + goto is_a_corner; + else + if( p[pixel[6]] < c_b) + if( p[pixel[7]] < c_b) + if( p[pixel[8]] < c_b) + if( p[pixel[9]] < c_b) + if( p[pixel[10]] < c_b) + if( p[pixel[11]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[6]] > cb) + if( p[pixel[7]] > cb) + if( p[pixel[8]] > cb) + if( p[pixel[9]] > cb) + if( p[pixel[10]] > cb) + if( p[pixel[11]] > cb) + if( p[pixel[12]] > cb) + if( p[pixel[13]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else if( p[pixel[5]] < c_b) + if( p[pixel[6]] > cb) + if( p[pixel[15]] < c_b) + if( p[pixel[13]] > cb) + if( p[pixel[7]] > cb) + if( p[pixel[8]] > cb) + if( p[pixel[9]] > cb) + if( p[pixel[10]] > cb) + if( p[pixel[11]] > cb) + if( p[pixel[12]] > cb) + if( p[pixel[14]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else if( p[pixel[13]] < c_b) + if( p[pixel[14]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[7]] > cb) + if( p[pixel[8]] > cb) + if( p[pixel[9]] > cb) + if( p[pixel[10]] > cb) + if( p[pixel[11]] > cb) + if( p[pixel[12]] > cb) + if( p[pixel[13]] > cb) + if( p[pixel[14]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else if( p[pixel[6]] < c_b) + if( p[pixel[7]] > cb) + if( p[pixel[14]] > cb) + if( p[pixel[8]] > cb) + if( p[pixel[9]] > cb) + if( p[pixel[10]] > cb) + if( p[pixel[11]] > cb) + if( p[pixel[12]] > cb) + if( p[pixel[13]] > cb) + if( p[pixel[15]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else if( p[pixel[14]] < c_b) + if( p[pixel[15]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else if( p[pixel[7]] < c_b) + if( p[pixel[8]] < c_b) + goto is_a_corner; + else + if( p[pixel[15]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[14]] < c_b) + if( p[pixel[15]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[13]] > cb) + if( p[pixel[7]] > cb) + if( p[pixel[8]] > cb) + if( p[pixel[9]] > cb) + if( p[pixel[10]] > cb) + if( p[pixel[11]] > cb) + if( p[pixel[12]] > cb) + if( p[pixel[14]] > cb) + if( p[pixel[15]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else if( p[pixel[13]] < c_b) + if( p[pixel[14]] < c_b) + if( p[pixel[15]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[12]] > cb) + if( p[pixel[7]] > cb) + if( p[pixel[8]] > cb) + if( p[pixel[9]] > cb) + if( p[pixel[10]] > cb) + if( p[pixel[11]] > cb) + if( p[pixel[13]] > cb) + if( p[pixel[14]] > cb) + if( p[pixel[6]] > cb) + goto is_a_corner; + else + if( p[pixel[15]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else if( p[pixel[12]] < c_b) + if( p[pixel[13]] < c_b) + if( p[pixel[14]] < c_b) + if( p[pixel[15]] < c_b) + goto is_a_corner; + else + if( p[pixel[6]] < c_b) + if( p[pixel[7]] < c_b) + if( p[pixel[8]] < c_b) + if( p[pixel[9]] < c_b) + if( p[pixel[10]] < c_b) + if( p[pixel[11]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[11]] > cb) + if( p[pixel[7]] > cb) + if( p[pixel[8]] > cb) + if( p[pixel[9]] > cb) + if( p[pixel[10]] > cb) + if( p[pixel[12]] > cb) + if( p[pixel[13]] > cb) + if( p[pixel[6]] > cb) + if( p[pixel[5]] > cb) + goto is_a_corner; + else + if( p[pixel[14]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[14]] > cb) + if( p[pixel[15]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else if( p[pixel[11]] < c_b) + if( p[pixel[12]] < c_b) + if( p[pixel[13]] < c_b) + if( p[pixel[14]] < c_b) + if( p[pixel[15]] < c_b) + goto is_a_corner; + else + if( p[pixel[6]] < c_b) + if( p[pixel[7]] < c_b) + if( p[pixel[8]] < c_b) + if( p[pixel[9]] < c_b) + if( p[pixel[10]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[5]] < c_b) + if( p[pixel[6]] < c_b) + if( p[pixel[7]] < c_b) + if( p[pixel[8]] < c_b) + if( p[pixel[9]] < c_b) + if( p[pixel[10]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[10]] > cb) + if( p[pixel[7]] > cb) + if( p[pixel[8]] > cb) + if( p[pixel[9]] > cb) + if( p[pixel[11]] > cb) + if( p[pixel[12]] > cb) + if( p[pixel[6]] > cb) + if( p[pixel[5]] > cb) + if( p[pixel[4]] > cb) + goto is_a_corner; + else + if( p[pixel[13]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[13]] > cb) + if( p[pixel[14]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[13]] > cb) + if( p[pixel[14]] > cb) + if( p[pixel[15]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else if( p[pixel[10]] < c_b) + if( p[pixel[11]] < c_b) + if( p[pixel[12]] < c_b) + if( p[pixel[13]] < c_b) + if( p[pixel[14]] < c_b) + if( p[pixel[15]] < c_b) + goto is_a_corner; + else + if( p[pixel[6]] < c_b) + if( p[pixel[7]] < c_b) + if( p[pixel[8]] < c_b) + if( p[pixel[9]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[5]] < c_b) + if( p[pixel[6]] < c_b) + if( p[pixel[7]] < c_b) + if( p[pixel[8]] < c_b) + if( p[pixel[9]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[4]] < c_b) + if( p[pixel[5]] < c_b) + if( p[pixel[6]] < c_b) + if( p[pixel[7]] < c_b) + if( p[pixel[8]] < c_b) + if( p[pixel[9]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[9]] > cb) + if( p[pixel[7]] > cb) + if( p[pixel[8]] > cb) + if( p[pixel[10]] > cb) + if( p[pixel[11]] > cb) + if( p[pixel[6]] > cb) + if( p[pixel[5]] > cb) + if( p[pixel[4]] > cb) + if( p[pixel[3]] > cb) + goto is_a_corner; + else + if( p[pixel[12]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[12]] > cb) + if( p[pixel[13]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[12]] > cb) + if( p[pixel[13]] > cb) + if( p[pixel[14]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[12]] > cb) + if( p[pixel[13]] > cb) + if( p[pixel[14]] > cb) + if( p[pixel[15]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else if( p[pixel[9]] < c_b) + if( p[pixel[10]] < c_b) + if( p[pixel[11]] < c_b) + if( p[pixel[12]] < c_b) + if( p[pixel[13]] < c_b) + if( p[pixel[14]] < c_b) + if( p[pixel[15]] < c_b) + goto is_a_corner; + else + if( p[pixel[6]] < c_b) + if( p[pixel[7]] < c_b) + if( p[pixel[8]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[5]] < c_b) + if( p[pixel[6]] < c_b) + if( p[pixel[7]] < c_b) + if( p[pixel[8]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[4]] < c_b) + if( p[pixel[5]] < c_b) + if( p[pixel[6]] < c_b) + if( p[pixel[7]] < c_b) + if( p[pixel[8]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[3]] < c_b) + if( p[pixel[4]] < c_b) + if( p[pixel[5]] < c_b) + if( p[pixel[6]] < c_b) + if( p[pixel[7]] < c_b) + if( p[pixel[8]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[8]] > cb) + if( p[pixel[7]] > cb) + if( p[pixel[9]] > cb) + if( p[pixel[10]] > cb) + if( p[pixel[6]] > cb) + if( p[pixel[5]] > cb) + if( p[pixel[4]] > cb) + if( p[pixel[3]] > cb) + if( p[pixel[2]] > cb) + goto is_a_corner; + else + if( p[pixel[11]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[11]] > cb) + if( p[pixel[12]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[11]] > cb) + if( p[pixel[12]] > cb) + if( p[pixel[13]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[11]] > cb) + if( p[pixel[12]] > cb) + if( p[pixel[13]] > cb) + if( p[pixel[14]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[11]] > cb) + if( p[pixel[12]] > cb) + if( p[pixel[13]] > cb) + if( p[pixel[14]] > cb) + if( p[pixel[15]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else if( p[pixel[8]] < c_b) + if( p[pixel[9]] < c_b) + if( p[pixel[10]] < c_b) + if( p[pixel[11]] < c_b) + if( p[pixel[12]] < c_b) + if( p[pixel[13]] < c_b) + if( p[pixel[14]] < c_b) + if( p[pixel[15]] < c_b) + goto is_a_corner; + else + if( p[pixel[6]] < c_b) + if( p[pixel[7]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[5]] < c_b) + if( p[pixel[6]] < c_b) + if( p[pixel[7]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[4]] < c_b) + if( p[pixel[5]] < c_b) + if( p[pixel[6]] < c_b) + if( p[pixel[7]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[3]] < c_b) + if( p[pixel[4]] < c_b) + if( p[pixel[5]] < c_b) + if( p[pixel[6]] < c_b) + if( p[pixel[7]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[2]] < c_b) + if( p[pixel[3]] < c_b) + if( p[pixel[4]] < c_b) + if( p[pixel[5]] < c_b) + if( p[pixel[6]] < c_b) + if( p[pixel[7]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[7]] > cb) + if( p[pixel[8]] > cb) + if( p[pixel[9]] > cb) + if( p[pixel[6]] > cb) + if( p[pixel[5]] > cb) + if( p[pixel[4]] > cb) + if( p[pixel[3]] > cb) + if( p[pixel[2]] > cb) + if( p[pixel[1]] > cb) + goto is_a_corner; + else + if( p[pixel[10]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[10]] > cb) + if( p[pixel[11]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[10]] > cb) + if( p[pixel[11]] > cb) + if( p[pixel[12]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[10]] > cb) + if( p[pixel[11]] > cb) + if( p[pixel[12]] > cb) + if( p[pixel[13]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[10]] > cb) + if( p[pixel[11]] > cb) + if( p[pixel[12]] > cb) + if( p[pixel[13]] > cb) + if( p[pixel[14]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[10]] > cb) + if( p[pixel[11]] > cb) + if( p[pixel[12]] > cb) + if( p[pixel[13]] > cb) + if( p[pixel[14]] > cb) + if( p[pixel[15]] > cb) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else if( p[pixel[7]] < c_b) + if( p[pixel[8]] < c_b) + if( p[pixel[9]] < c_b) + if( p[pixel[6]] < c_b) + if( p[pixel[5]] < c_b) + if( p[pixel[4]] < c_b) + if( p[pixel[3]] < c_b) + if( p[pixel[2]] < c_b) + if( p[pixel[1]] < c_b) + goto is_a_corner; + else + if( p[pixel[10]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[10]] < c_b) + if( p[pixel[11]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[10]] < c_b) + if( p[pixel[11]] < c_b) + if( p[pixel[12]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[10]] < c_b) + if( p[pixel[11]] < c_b) + if( p[pixel[12]] < c_b) + if( p[pixel[13]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[10]] < c_b) + if( p[pixel[11]] < c_b) + if( p[pixel[12]] < c_b) + if( p[pixel[13]] < c_b) + if( p[pixel[14]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + if( p[pixel[10]] < c_b) + if( p[pixel[11]] < c_b) + if( p[pixel[12]] < c_b) + if( p[pixel[13]] < c_b) + if( p[pixel[14]] < c_b) + if( p[pixel[15]] < c_b) + goto is_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + else + goto is_not_a_corner; + +is_a_corner: + bmin=b; + goto end_if; + +is_not_a_corner: + bmax=b; + goto end_if; + +end_if: + + if(bmin == bmax - 1 || bmin == bmax) + return bmin; + b = (bmin + bmax) / 2; + } +} + +static void make_offsets(int pixel[], int row_stride) +{ + pixel[0] = 0 + row_stride * 3; + pixel[1] = 1 + row_stride * 3; + pixel[2] = 2 + row_stride * 2; + pixel[3] = 3 + row_stride * 1; + pixel[4] = 3 + row_stride * 0; + pixel[5] = 3 + row_stride * -1; + pixel[6] = 2 + row_stride * -2; + pixel[7] = 1 + row_stride * -3; + pixel[8] = 0 + row_stride * -3; + pixel[9] = -1 + row_stride * -3; + pixel[10] = -2 + row_stride * -2; + pixel[11] = -3 + row_stride * -1; + pixel[12] = -3 + row_stride * 0; + pixel[13] = -3 + row_stride * 1; + pixel[14] = -2 + row_stride * 2; + pixel[15] = -1 + row_stride * 3; +} + + + +int* fast9_score(const byte* i, int stride, xy* corners, int num_corners, int b) +{ + int* scores = (int*)malloc(sizeof(int)* num_corners); + int n; + + int pixel[16]; + make_offsets(pixel, stride); + + for(n=0; n < num_corners; n++) + scores[n] = fast9_corner_score(i + corners[n].y*stride + corners[n].x, pixel, b); + + return scores; +} + + +xy* fast9_detect(const byte* im, int xsize, int ysize, int stride, int b, int* ret_num_corners) +{ + int num_corners=0; + xy* ret_corners; + int rsize=512; + int pixel[16]; + int x, y; + + ret_corners = (xy*)malloc(sizeof(xy)*rsize); + make_offsets(pixel, stride); + + for(y=3; y < ysize - 3; y++) + for(x=3; x < xsize - 3; x++) + { + const byte* p = im + y*stride + x; + + int cb = *p + b; + int c_b= *p - b; + if(p[pixel[0]] > cb) + if(p[pixel[1]] > cb) + if(p[pixel[2]] > cb) + if(p[pixel[3]] > cb) + if(p[pixel[4]] > cb) + if(p[pixel[5]] > cb) + if(p[pixel[6]] > cb) + if(p[pixel[7]] > cb) + if(p[pixel[8]] > cb) + {} + else + if(p[pixel[15]] > cb) + {} + else + continue; + else if(p[pixel[7]] < c_b) + if(p[pixel[14]] > cb) + if(p[pixel[15]] > cb) + {} + else + continue; + else if(p[pixel[14]] < c_b) + if(p[pixel[8]] < c_b) + if(p[pixel[9]] < c_b) + if(p[pixel[10]] < c_b) + if(p[pixel[11]] < c_b) + if(p[pixel[12]] < c_b) + if(p[pixel[13]] < c_b) + if(p[pixel[15]] < c_b) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + if(p[pixel[14]] > cb) + if(p[pixel[15]] > cb) + {} + else + continue; + else + continue; + else if(p[pixel[6]] < c_b) + if(p[pixel[15]] > cb) + if(p[pixel[13]] > cb) + if(p[pixel[14]] > cb) + {} + else + continue; + else if(p[pixel[13]] < c_b) + if(p[pixel[7]] < c_b) + if(p[pixel[8]] < c_b) + if(p[pixel[9]] < c_b) + if(p[pixel[10]] < c_b) + if(p[pixel[11]] < c_b) + if(p[pixel[12]] < c_b) + if(p[pixel[14]] < c_b) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + if(p[pixel[7]] < c_b) + if(p[pixel[8]] < c_b) + if(p[pixel[9]] < c_b) + if(p[pixel[10]] < c_b) + if(p[pixel[11]] < c_b) + if(p[pixel[12]] < c_b) + if(p[pixel[13]] < c_b) + if(p[pixel[14]] < c_b) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + if(p[pixel[13]] > cb) + if(p[pixel[14]] > cb) + if(p[pixel[15]] > cb) + {} + else + continue; + else + continue; + else if(p[pixel[13]] < c_b) + if(p[pixel[7]] < c_b) + if(p[pixel[8]] < c_b) + if(p[pixel[9]] < c_b) + if(p[pixel[10]] < c_b) + if(p[pixel[11]] < c_b) + if(p[pixel[12]] < c_b) + if(p[pixel[14]] < c_b) + if(p[pixel[15]] < c_b) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else if(p[pixel[5]] < c_b) + if(p[pixel[14]] > cb) + if(p[pixel[12]] > cb) + if(p[pixel[13]] > cb) + if(p[pixel[15]] > cb) + {} + else + if(p[pixel[6]] > cb) + if(p[pixel[7]] > cb) + if(p[pixel[8]] > cb) + if(p[pixel[9]] > cb) + if(p[pixel[10]] > cb) + if(p[pixel[11]] > cb) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else if(p[pixel[12]] < c_b) + if(p[pixel[6]] < c_b) + if(p[pixel[7]] < c_b) + if(p[pixel[8]] < c_b) + if(p[pixel[9]] < c_b) + if(p[pixel[10]] < c_b) + if(p[pixel[11]] < c_b) + if(p[pixel[13]] < c_b) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else if(p[pixel[14]] < c_b) + if(p[pixel[7]] < c_b) + if(p[pixel[8]] < c_b) + if(p[pixel[9]] < c_b) + if(p[pixel[10]] < c_b) + if(p[pixel[11]] < c_b) + if(p[pixel[12]] < c_b) + if(p[pixel[13]] < c_b) + if(p[pixel[6]] < c_b) + {} + else + if(p[pixel[15]] < c_b) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + if(p[pixel[6]] < c_b) + if(p[pixel[7]] < c_b) + if(p[pixel[8]] < c_b) + if(p[pixel[9]] < c_b) + if(p[pixel[10]] < c_b) + if(p[pixel[11]] < c_b) + if(p[pixel[12]] < c_b) + if(p[pixel[13]] < c_b) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + if(p[pixel[12]] > cb) + if(p[pixel[13]] > cb) + if(p[pixel[14]] > cb) + if(p[pixel[15]] > cb) + {} + else + if(p[pixel[6]] > cb) + if(p[pixel[7]] > cb) + if(p[pixel[8]] > cb) + if(p[pixel[9]] > cb) + if(p[pixel[10]] > cb) + if(p[pixel[11]] > cb) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else if(p[pixel[12]] < c_b) + if(p[pixel[7]] < c_b) + if(p[pixel[8]] < c_b) + if(p[pixel[9]] < c_b) + if(p[pixel[10]] < c_b) + if(p[pixel[11]] < c_b) + if(p[pixel[13]] < c_b) + if(p[pixel[14]] < c_b) + if(p[pixel[6]] < c_b) + {} + else + if(p[pixel[15]] < c_b) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else if(p[pixel[4]] < c_b) + if(p[pixel[13]] > cb) + if(p[pixel[11]] > cb) + if(p[pixel[12]] > cb) + if(p[pixel[14]] > cb) + if(p[pixel[15]] > cb) + {} + else + if(p[pixel[6]] > cb) + if(p[pixel[7]] > cb) + if(p[pixel[8]] > cb) + if(p[pixel[9]] > cb) + if(p[pixel[10]] > cb) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + if(p[pixel[5]] > cb) + if(p[pixel[6]] > cb) + if(p[pixel[7]] > cb) + if(p[pixel[8]] > cb) + if(p[pixel[9]] > cb) + if(p[pixel[10]] > cb) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else if(p[pixel[11]] < c_b) + if(p[pixel[5]] < c_b) + if(p[pixel[6]] < c_b) + if(p[pixel[7]] < c_b) + if(p[pixel[8]] < c_b) + if(p[pixel[9]] < c_b) + if(p[pixel[10]] < c_b) + if(p[pixel[12]] < c_b) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else if(p[pixel[13]] < c_b) + if(p[pixel[7]] < c_b) + if(p[pixel[8]] < c_b) + if(p[pixel[9]] < c_b) + if(p[pixel[10]] < c_b) + if(p[pixel[11]] < c_b) + if(p[pixel[12]] < c_b) + if(p[pixel[6]] < c_b) + if(p[pixel[5]] < c_b) + {} + else + if(p[pixel[14]] < c_b) + {} + else + continue; + else + if(p[pixel[14]] < c_b) + if(p[pixel[15]] < c_b) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + if(p[pixel[5]] < c_b) + if(p[pixel[6]] < c_b) + if(p[pixel[7]] < c_b) + if(p[pixel[8]] < c_b) + if(p[pixel[9]] < c_b) + if(p[pixel[10]] < c_b) + if(p[pixel[11]] < c_b) + if(p[pixel[12]] < c_b) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + if(p[pixel[11]] > cb) + if(p[pixel[12]] > cb) + if(p[pixel[13]] > cb) + if(p[pixel[14]] > cb) + if(p[pixel[15]] > cb) + {} + else + if(p[pixel[6]] > cb) + if(p[pixel[7]] > cb) + if(p[pixel[8]] > cb) + if(p[pixel[9]] > cb) + if(p[pixel[10]] > cb) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + if(p[pixel[5]] > cb) + if(p[pixel[6]] > cb) + if(p[pixel[7]] > cb) + if(p[pixel[8]] > cb) + if(p[pixel[9]] > cb) + if(p[pixel[10]] > cb) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else if(p[pixel[11]] < c_b) + if(p[pixel[7]] < c_b) + if(p[pixel[8]] < c_b) + if(p[pixel[9]] < c_b) + if(p[pixel[10]] < c_b) + if(p[pixel[12]] < c_b) + if(p[pixel[13]] < c_b) + if(p[pixel[6]] < c_b) + if(p[pixel[5]] < c_b) + {} + else + if(p[pixel[14]] < c_b) + {} + else + continue; + else + if(p[pixel[14]] < c_b) + if(p[pixel[15]] < c_b) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else if(p[pixel[3]] < c_b) + if(p[pixel[10]] > cb) + if(p[pixel[11]] > cb) + if(p[pixel[12]] > cb) + if(p[pixel[13]] > cb) + if(p[pixel[14]] > cb) + if(p[pixel[15]] > cb) + {} + else + if(p[pixel[6]] > cb) + if(p[pixel[7]] > cb) + if(p[pixel[8]] > cb) + if(p[pixel[9]] > cb) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + if(p[pixel[5]] > cb) + if(p[pixel[6]] > cb) + if(p[pixel[7]] > cb) + if(p[pixel[8]] > cb) + if(p[pixel[9]] > cb) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + if(p[pixel[4]] > cb) + if(p[pixel[5]] > cb) + if(p[pixel[6]] > cb) + if(p[pixel[7]] > cb) + if(p[pixel[8]] > cb) + if(p[pixel[9]] > cb) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else if(p[pixel[10]] < c_b) + if(p[pixel[7]] < c_b) + if(p[pixel[8]] < c_b) + if(p[pixel[9]] < c_b) + if(p[pixel[11]] < c_b) + if(p[pixel[6]] < c_b) + if(p[pixel[5]] < c_b) + if(p[pixel[4]] < c_b) + {} + else + if(p[pixel[12]] < c_b) + if(p[pixel[13]] < c_b) + {} + else + continue; + else + continue; + else + if(p[pixel[12]] < c_b) + if(p[pixel[13]] < c_b) + if(p[pixel[14]] < c_b) + {} + else + continue; + else + continue; + else + continue; + else + if(p[pixel[12]] < c_b) + if(p[pixel[13]] < c_b) + if(p[pixel[14]] < c_b) + if(p[pixel[15]] < c_b) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + if(p[pixel[10]] > cb) + if(p[pixel[11]] > cb) + if(p[pixel[12]] > cb) + if(p[pixel[13]] > cb) + if(p[pixel[14]] > cb) + if(p[pixel[15]] > cb) + {} + else + if(p[pixel[6]] > cb) + if(p[pixel[7]] > cb) + if(p[pixel[8]] > cb) + if(p[pixel[9]] > cb) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + if(p[pixel[5]] > cb) + if(p[pixel[6]] > cb) + if(p[pixel[7]] > cb) + if(p[pixel[8]] > cb) + if(p[pixel[9]] > cb) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + if(p[pixel[4]] > cb) + if(p[pixel[5]] > cb) + if(p[pixel[6]] > cb) + if(p[pixel[7]] > cb) + if(p[pixel[8]] > cb) + if(p[pixel[9]] > cb) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else if(p[pixel[10]] < c_b) + if(p[pixel[7]] < c_b) + if(p[pixel[8]] < c_b) + if(p[pixel[9]] < c_b) + if(p[pixel[11]] < c_b) + if(p[pixel[12]] < c_b) + if(p[pixel[6]] < c_b) + if(p[pixel[5]] < c_b) + if(p[pixel[4]] < c_b) + {} + else + if(p[pixel[13]] < c_b) + {} + else + continue; + else + if(p[pixel[13]] < c_b) + if(p[pixel[14]] < c_b) + {} + else + continue; + else + continue; + else + if(p[pixel[13]] < c_b) + if(p[pixel[14]] < c_b) + if(p[pixel[15]] < c_b) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else if(p[pixel[2]] < c_b) + if(p[pixel[9]] > cb) + if(p[pixel[10]] > cb) + if(p[pixel[11]] > cb) + if(p[pixel[12]] > cb) + if(p[pixel[13]] > cb) + if(p[pixel[14]] > cb) + if(p[pixel[15]] > cb) + {} + else + if(p[pixel[6]] > cb) + if(p[pixel[7]] > cb) + if(p[pixel[8]] > cb) + {} + else + continue; + else + continue; + else + continue; + else + if(p[pixel[5]] > cb) + if(p[pixel[6]] > cb) + if(p[pixel[7]] > cb) + if(p[pixel[8]] > cb) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + if(p[pixel[4]] > cb) + if(p[pixel[5]] > cb) + if(p[pixel[6]] > cb) + if(p[pixel[7]] > cb) + if(p[pixel[8]] > cb) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + if(p[pixel[3]] > cb) + if(p[pixel[4]] > cb) + if(p[pixel[5]] > cb) + if(p[pixel[6]] > cb) + if(p[pixel[7]] > cb) + if(p[pixel[8]] > cb) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else if(p[pixel[9]] < c_b) + if(p[pixel[7]] < c_b) + if(p[pixel[8]] < c_b) + if(p[pixel[10]] < c_b) + if(p[pixel[6]] < c_b) + if(p[pixel[5]] < c_b) + if(p[pixel[4]] < c_b) + if(p[pixel[3]] < c_b) + {} + else + if(p[pixel[11]] < c_b) + if(p[pixel[12]] < c_b) + {} + else + continue; + else + continue; + else + if(p[pixel[11]] < c_b) + if(p[pixel[12]] < c_b) + if(p[pixel[13]] < c_b) + {} + else + continue; + else + continue; + else + continue; + else + if(p[pixel[11]] < c_b) + if(p[pixel[12]] < c_b) + if(p[pixel[13]] < c_b) + if(p[pixel[14]] < c_b) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + if(p[pixel[11]] < c_b) + if(p[pixel[12]] < c_b) + if(p[pixel[13]] < c_b) + if(p[pixel[14]] < c_b) + if(p[pixel[15]] < c_b) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + if(p[pixel[9]] > cb) + if(p[pixel[10]] > cb) + if(p[pixel[11]] > cb) + if(p[pixel[12]] > cb) + if(p[pixel[13]] > cb) + if(p[pixel[14]] > cb) + if(p[pixel[15]] > cb) + {} + else + if(p[pixel[6]] > cb) + if(p[pixel[7]] > cb) + if(p[pixel[8]] > cb) + {} + else + continue; + else + continue; + else + continue; + else + if(p[pixel[5]] > cb) + if(p[pixel[6]] > cb) + if(p[pixel[7]] > cb) + if(p[pixel[8]] > cb) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + if(p[pixel[4]] > cb) + if(p[pixel[5]] > cb) + if(p[pixel[6]] > cb) + if(p[pixel[7]] > cb) + if(p[pixel[8]] > cb) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + if(p[pixel[3]] > cb) + if(p[pixel[4]] > cb) + if(p[pixel[5]] > cb) + if(p[pixel[6]] > cb) + if(p[pixel[7]] > cb) + if(p[pixel[8]] > cb) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else if(p[pixel[9]] < c_b) + if(p[pixel[7]] < c_b) + if(p[pixel[8]] < c_b) + if(p[pixel[10]] < c_b) + if(p[pixel[11]] < c_b) + if(p[pixel[6]] < c_b) + if(p[pixel[5]] < c_b) + if(p[pixel[4]] < c_b) + if(p[pixel[3]] < c_b) + {} + else + if(p[pixel[12]] < c_b) + {} + else + continue; + else + if(p[pixel[12]] < c_b) + if(p[pixel[13]] < c_b) + {} + else + continue; + else + continue; + else + if(p[pixel[12]] < c_b) + if(p[pixel[13]] < c_b) + if(p[pixel[14]] < c_b) + {} + else + continue; + else + continue; + else + continue; + else + if(p[pixel[12]] < c_b) + if(p[pixel[13]] < c_b) + if(p[pixel[14]] < c_b) + if(p[pixel[15]] < c_b) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else if(p[pixel[1]] < c_b) + if(p[pixel[8]] > cb) + if(p[pixel[9]] > cb) + if(p[pixel[10]] > cb) + if(p[pixel[11]] > cb) + if(p[pixel[12]] > cb) + if(p[pixel[13]] > cb) + if(p[pixel[14]] > cb) + if(p[pixel[15]] > cb) + {} + else + if(p[pixel[6]] > cb) + if(p[pixel[7]] > cb) + {} + else + continue; + else + continue; + else + if(p[pixel[5]] > cb) + if(p[pixel[6]] > cb) + if(p[pixel[7]] > cb) + {} + else + continue; + else + continue; + else + continue; + else + if(p[pixel[4]] > cb) + if(p[pixel[5]] > cb) + if(p[pixel[6]] > cb) + if(p[pixel[7]] > cb) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + if(p[pixel[3]] > cb) + if(p[pixel[4]] > cb) + if(p[pixel[5]] > cb) + if(p[pixel[6]] > cb) + if(p[pixel[7]] > cb) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + if(p[pixel[2]] > cb) + if(p[pixel[3]] > cb) + if(p[pixel[4]] > cb) + if(p[pixel[5]] > cb) + if(p[pixel[6]] > cb) + if(p[pixel[7]] > cb) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else if(p[pixel[8]] < c_b) + if(p[pixel[7]] < c_b) + if(p[pixel[9]] < c_b) + if(p[pixel[6]] < c_b) + if(p[pixel[5]] < c_b) + if(p[pixel[4]] < c_b) + if(p[pixel[3]] < c_b) + if(p[pixel[2]] < c_b) + {} + else + if(p[pixel[10]] < c_b) + if(p[pixel[11]] < c_b) + {} + else + continue; + else + continue; + else + if(p[pixel[10]] < c_b) + if(p[pixel[11]] < c_b) + if(p[pixel[12]] < c_b) + {} + else + continue; + else + continue; + else + continue; + else + if(p[pixel[10]] < c_b) + if(p[pixel[11]] < c_b) + if(p[pixel[12]] < c_b) + if(p[pixel[13]] < c_b) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + if(p[pixel[10]] < c_b) + if(p[pixel[11]] < c_b) + if(p[pixel[12]] < c_b) + if(p[pixel[13]] < c_b) + if(p[pixel[14]] < c_b) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + if(p[pixel[10]] < c_b) + if(p[pixel[11]] < c_b) + if(p[pixel[12]] < c_b) + if(p[pixel[13]] < c_b) + if(p[pixel[14]] < c_b) + if(p[pixel[15]] < c_b) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + if(p[pixel[8]] > cb) + if(p[pixel[9]] > cb) + if(p[pixel[10]] > cb) + if(p[pixel[11]] > cb) + if(p[pixel[12]] > cb) + if(p[pixel[13]] > cb) + if(p[pixel[14]] > cb) + if(p[pixel[15]] > cb) + {} + else + if(p[pixel[6]] > cb) + if(p[pixel[7]] > cb) + {} + else + continue; + else + continue; + else + if(p[pixel[5]] > cb) + if(p[pixel[6]] > cb) + if(p[pixel[7]] > cb) + {} + else + continue; + else + continue; + else + continue; + else + if(p[pixel[4]] > cb) + if(p[pixel[5]] > cb) + if(p[pixel[6]] > cb) + if(p[pixel[7]] > cb) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + if(p[pixel[3]] > cb) + if(p[pixel[4]] > cb) + if(p[pixel[5]] > cb) + if(p[pixel[6]] > cb) + if(p[pixel[7]] > cb) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + if(p[pixel[2]] > cb) + if(p[pixel[3]] > cb) + if(p[pixel[4]] > cb) + if(p[pixel[5]] > cb) + if(p[pixel[6]] > cb) + if(p[pixel[7]] > cb) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else if(p[pixel[8]] < c_b) + if(p[pixel[7]] < c_b) + if(p[pixel[9]] < c_b) + if(p[pixel[10]] < c_b) + if(p[pixel[6]] < c_b) + if(p[pixel[5]] < c_b) + if(p[pixel[4]] < c_b) + if(p[pixel[3]] < c_b) + if(p[pixel[2]] < c_b) + {} + else + if(p[pixel[11]] < c_b) + {} + else + continue; + else + if(p[pixel[11]] < c_b) + if(p[pixel[12]] < c_b) + {} + else + continue; + else + continue; + else + if(p[pixel[11]] < c_b) + if(p[pixel[12]] < c_b) + if(p[pixel[13]] < c_b) + {} + else + continue; + else + continue; + else + continue; + else + if(p[pixel[11]] < c_b) + if(p[pixel[12]] < c_b) + if(p[pixel[13]] < c_b) + if(p[pixel[14]] < c_b) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + if(p[pixel[11]] < c_b) + if(p[pixel[12]] < c_b) + if(p[pixel[13]] < c_b) + if(p[pixel[14]] < c_b) + if(p[pixel[15]] < c_b) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else if(p[pixel[0]] < c_b) + if(p[pixel[1]] > cb) + if(p[pixel[8]] > cb) + if(p[pixel[7]] > cb) + if(p[pixel[9]] > cb) + if(p[pixel[6]] > cb) + if(p[pixel[5]] > cb) + if(p[pixel[4]] > cb) + if(p[pixel[3]] > cb) + if(p[pixel[2]] > cb) + {} + else + if(p[pixel[10]] > cb) + if(p[pixel[11]] > cb) + {} + else + continue; + else + continue; + else + if(p[pixel[10]] > cb) + if(p[pixel[11]] > cb) + if(p[pixel[12]] > cb) + {} + else + continue; + else + continue; + else + continue; + else + if(p[pixel[10]] > cb) + if(p[pixel[11]] > cb) + if(p[pixel[12]] > cb) + if(p[pixel[13]] > cb) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + if(p[pixel[10]] > cb) + if(p[pixel[11]] > cb) + if(p[pixel[12]] > cb) + if(p[pixel[13]] > cb) + if(p[pixel[14]] > cb) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + if(p[pixel[10]] > cb) + if(p[pixel[11]] > cb) + if(p[pixel[12]] > cb) + if(p[pixel[13]] > cb) + if(p[pixel[14]] > cb) + if(p[pixel[15]] > cb) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else if(p[pixel[8]] < c_b) + if(p[pixel[9]] < c_b) + if(p[pixel[10]] < c_b) + if(p[pixel[11]] < c_b) + if(p[pixel[12]] < c_b) + if(p[pixel[13]] < c_b) + if(p[pixel[14]] < c_b) + if(p[pixel[15]] < c_b) + {} + else + if(p[pixel[6]] < c_b) + if(p[pixel[7]] < c_b) + {} + else + continue; + else + continue; + else + if(p[pixel[5]] < c_b) + if(p[pixel[6]] < c_b) + if(p[pixel[7]] < c_b) + {} + else + continue; + else + continue; + else + continue; + else + if(p[pixel[4]] < c_b) + if(p[pixel[5]] < c_b) + if(p[pixel[6]] < c_b) + if(p[pixel[7]] < c_b) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + if(p[pixel[3]] < c_b) + if(p[pixel[4]] < c_b) + if(p[pixel[5]] < c_b) + if(p[pixel[6]] < c_b) + if(p[pixel[7]] < c_b) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + if(p[pixel[2]] < c_b) + if(p[pixel[3]] < c_b) + if(p[pixel[4]] < c_b) + if(p[pixel[5]] < c_b) + if(p[pixel[6]] < c_b) + if(p[pixel[7]] < c_b) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else if(p[pixel[1]] < c_b) + if(p[pixel[2]] > cb) + if(p[pixel[9]] > cb) + if(p[pixel[7]] > cb) + if(p[pixel[8]] > cb) + if(p[pixel[10]] > cb) + if(p[pixel[6]] > cb) + if(p[pixel[5]] > cb) + if(p[pixel[4]] > cb) + if(p[pixel[3]] > cb) + {} + else + if(p[pixel[11]] > cb) + if(p[pixel[12]] > cb) + {} + else + continue; + else + continue; + else + if(p[pixel[11]] > cb) + if(p[pixel[12]] > cb) + if(p[pixel[13]] > cb) + {} + else + continue; + else + continue; + else + continue; + else + if(p[pixel[11]] > cb) + if(p[pixel[12]] > cb) + if(p[pixel[13]] > cb) + if(p[pixel[14]] > cb) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + if(p[pixel[11]] > cb) + if(p[pixel[12]] > cb) + if(p[pixel[13]] > cb) + if(p[pixel[14]] > cb) + if(p[pixel[15]] > cb) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else if(p[pixel[9]] < c_b) + if(p[pixel[10]] < c_b) + if(p[pixel[11]] < c_b) + if(p[pixel[12]] < c_b) + if(p[pixel[13]] < c_b) + if(p[pixel[14]] < c_b) + if(p[pixel[15]] < c_b) + {} + else + if(p[pixel[6]] < c_b) + if(p[pixel[7]] < c_b) + if(p[pixel[8]] < c_b) + {} + else + continue; + else + continue; + else + continue; + else + if(p[pixel[5]] < c_b) + if(p[pixel[6]] < c_b) + if(p[pixel[7]] < c_b) + if(p[pixel[8]] < c_b) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + if(p[pixel[4]] < c_b) + if(p[pixel[5]] < c_b) + if(p[pixel[6]] < c_b) + if(p[pixel[7]] < c_b) + if(p[pixel[8]] < c_b) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + if(p[pixel[3]] < c_b) + if(p[pixel[4]] < c_b) + if(p[pixel[5]] < c_b) + if(p[pixel[6]] < c_b) + if(p[pixel[7]] < c_b) + if(p[pixel[8]] < c_b) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else if(p[pixel[2]] < c_b) + if(p[pixel[3]] > cb) + if(p[pixel[10]] > cb) + if(p[pixel[7]] > cb) + if(p[pixel[8]] > cb) + if(p[pixel[9]] > cb) + if(p[pixel[11]] > cb) + if(p[pixel[6]] > cb) + if(p[pixel[5]] > cb) + if(p[pixel[4]] > cb) + {} + else + if(p[pixel[12]] > cb) + if(p[pixel[13]] > cb) + {} + else + continue; + else + continue; + else + if(p[pixel[12]] > cb) + if(p[pixel[13]] > cb) + if(p[pixel[14]] > cb) + {} + else + continue; + else + continue; + else + continue; + else + if(p[pixel[12]] > cb) + if(p[pixel[13]] > cb) + if(p[pixel[14]] > cb) + if(p[pixel[15]] > cb) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else if(p[pixel[10]] < c_b) + if(p[pixel[11]] < c_b) + if(p[pixel[12]] < c_b) + if(p[pixel[13]] < c_b) + if(p[pixel[14]] < c_b) + if(p[pixel[15]] < c_b) + {} + else + if(p[pixel[6]] < c_b) + if(p[pixel[7]] < c_b) + if(p[pixel[8]] < c_b) + if(p[pixel[9]] < c_b) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + if(p[pixel[5]] < c_b) + if(p[pixel[6]] < c_b) + if(p[pixel[7]] < c_b) + if(p[pixel[8]] < c_b) + if(p[pixel[9]] < c_b) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + if(p[pixel[4]] < c_b) + if(p[pixel[5]] < c_b) + if(p[pixel[6]] < c_b) + if(p[pixel[7]] < c_b) + if(p[pixel[8]] < c_b) + if(p[pixel[9]] < c_b) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else if(p[pixel[3]] < c_b) + if(p[pixel[4]] > cb) + if(p[pixel[13]] > cb) + if(p[pixel[7]] > cb) + if(p[pixel[8]] > cb) + if(p[pixel[9]] > cb) + if(p[pixel[10]] > cb) + if(p[pixel[11]] > cb) + if(p[pixel[12]] > cb) + if(p[pixel[6]] > cb) + if(p[pixel[5]] > cb) + {} + else + if(p[pixel[14]] > cb) + {} + else + continue; + else + if(p[pixel[14]] > cb) + if(p[pixel[15]] > cb) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else if(p[pixel[13]] < c_b) + if(p[pixel[11]] > cb) + if(p[pixel[5]] > cb) + if(p[pixel[6]] > cb) + if(p[pixel[7]] > cb) + if(p[pixel[8]] > cb) + if(p[pixel[9]] > cb) + if(p[pixel[10]] > cb) + if(p[pixel[12]] > cb) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else if(p[pixel[11]] < c_b) + if(p[pixel[12]] < c_b) + if(p[pixel[14]] < c_b) + if(p[pixel[15]] < c_b) + {} + else + if(p[pixel[6]] < c_b) + if(p[pixel[7]] < c_b) + if(p[pixel[8]] < c_b) + if(p[pixel[9]] < c_b) + if(p[pixel[10]] < c_b) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + if(p[pixel[5]] < c_b) + if(p[pixel[6]] < c_b) + if(p[pixel[7]] < c_b) + if(p[pixel[8]] < c_b) + if(p[pixel[9]] < c_b) + if(p[pixel[10]] < c_b) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + if(p[pixel[5]] > cb) + if(p[pixel[6]] > cb) + if(p[pixel[7]] > cb) + if(p[pixel[8]] > cb) + if(p[pixel[9]] > cb) + if(p[pixel[10]] > cb) + if(p[pixel[11]] > cb) + if(p[pixel[12]] > cb) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else if(p[pixel[4]] < c_b) + if(p[pixel[5]] > cb) + if(p[pixel[14]] > cb) + if(p[pixel[7]] > cb) + if(p[pixel[8]] > cb) + if(p[pixel[9]] > cb) + if(p[pixel[10]] > cb) + if(p[pixel[11]] > cb) + if(p[pixel[12]] > cb) + if(p[pixel[13]] > cb) + if(p[pixel[6]] > cb) + {} + else + if(p[pixel[15]] > cb) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else if(p[pixel[14]] < c_b) + if(p[pixel[12]] > cb) + if(p[pixel[6]] > cb) + if(p[pixel[7]] > cb) + if(p[pixel[8]] > cb) + if(p[pixel[9]] > cb) + if(p[pixel[10]] > cb) + if(p[pixel[11]] > cb) + if(p[pixel[13]] > cb) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else if(p[pixel[12]] < c_b) + if(p[pixel[13]] < c_b) + if(p[pixel[15]] < c_b) + {} + else + if(p[pixel[6]] < c_b) + if(p[pixel[7]] < c_b) + if(p[pixel[8]] < c_b) + if(p[pixel[9]] < c_b) + if(p[pixel[10]] < c_b) + if(p[pixel[11]] < c_b) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + if(p[pixel[6]] > cb) + if(p[pixel[7]] > cb) + if(p[pixel[8]] > cb) + if(p[pixel[9]] > cb) + if(p[pixel[10]] > cb) + if(p[pixel[11]] > cb) + if(p[pixel[12]] > cb) + if(p[pixel[13]] > cb) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else if(p[pixel[5]] < c_b) + if(p[pixel[6]] > cb) + if(p[pixel[15]] < c_b) + if(p[pixel[13]] > cb) + if(p[pixel[7]] > cb) + if(p[pixel[8]] > cb) + if(p[pixel[9]] > cb) + if(p[pixel[10]] > cb) + if(p[pixel[11]] > cb) + if(p[pixel[12]] > cb) + if(p[pixel[14]] > cb) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else if(p[pixel[13]] < c_b) + if(p[pixel[14]] < c_b) + {} + else + continue; + else + continue; + else + if(p[pixel[7]] > cb) + if(p[pixel[8]] > cb) + if(p[pixel[9]] > cb) + if(p[pixel[10]] > cb) + if(p[pixel[11]] > cb) + if(p[pixel[12]] > cb) + if(p[pixel[13]] > cb) + if(p[pixel[14]] > cb) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else if(p[pixel[6]] < c_b) + if(p[pixel[7]] > cb) + if(p[pixel[14]] > cb) + if(p[pixel[8]] > cb) + if(p[pixel[9]] > cb) + if(p[pixel[10]] > cb) + if(p[pixel[11]] > cb) + if(p[pixel[12]] > cb) + if(p[pixel[13]] > cb) + if(p[pixel[15]] > cb) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else if(p[pixel[14]] < c_b) + if(p[pixel[15]] < c_b) + {} + else + continue; + else + continue; + else if(p[pixel[7]] < c_b) + if(p[pixel[8]] < c_b) + {} + else + if(p[pixel[15]] < c_b) + {} + else + continue; + else + if(p[pixel[14]] < c_b) + if(p[pixel[15]] < c_b) + {} + else + continue; + else + continue; + else + if(p[pixel[13]] > cb) + if(p[pixel[7]] > cb) + if(p[pixel[8]] > cb) + if(p[pixel[9]] > cb) + if(p[pixel[10]] > cb) + if(p[pixel[11]] > cb) + if(p[pixel[12]] > cb) + if(p[pixel[14]] > cb) + if(p[pixel[15]] > cb) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else if(p[pixel[13]] < c_b) + if(p[pixel[14]] < c_b) + if(p[pixel[15]] < c_b) + {} + else + continue; + else + continue; + else + continue; + else + if(p[pixel[12]] > cb) + if(p[pixel[7]] > cb) + if(p[pixel[8]] > cb) + if(p[pixel[9]] > cb) + if(p[pixel[10]] > cb) + if(p[pixel[11]] > cb) + if(p[pixel[13]] > cb) + if(p[pixel[14]] > cb) + if(p[pixel[6]] > cb) + {} + else + if(p[pixel[15]] > cb) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else if(p[pixel[12]] < c_b) + if(p[pixel[13]] < c_b) + if(p[pixel[14]] < c_b) + if(p[pixel[15]] < c_b) + {} + else + if(p[pixel[6]] < c_b) + if(p[pixel[7]] < c_b) + if(p[pixel[8]] < c_b) + if(p[pixel[9]] < c_b) + if(p[pixel[10]] < c_b) + if(p[pixel[11]] < c_b) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + if(p[pixel[11]] > cb) + if(p[pixel[7]] > cb) + if(p[pixel[8]] > cb) + if(p[pixel[9]] > cb) + if(p[pixel[10]] > cb) + if(p[pixel[12]] > cb) + if(p[pixel[13]] > cb) + if(p[pixel[6]] > cb) + if(p[pixel[5]] > cb) + {} + else + if(p[pixel[14]] > cb) + {} + else + continue; + else + if(p[pixel[14]] > cb) + if(p[pixel[15]] > cb) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else if(p[pixel[11]] < c_b) + if(p[pixel[12]] < c_b) + if(p[pixel[13]] < c_b) + if(p[pixel[14]] < c_b) + if(p[pixel[15]] < c_b) + {} + else + if(p[pixel[6]] < c_b) + if(p[pixel[7]] < c_b) + if(p[pixel[8]] < c_b) + if(p[pixel[9]] < c_b) + if(p[pixel[10]] < c_b) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + if(p[pixel[5]] < c_b) + if(p[pixel[6]] < c_b) + if(p[pixel[7]] < c_b) + if(p[pixel[8]] < c_b) + if(p[pixel[9]] < c_b) + if(p[pixel[10]] < c_b) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + if(p[pixel[10]] > cb) + if(p[pixel[7]] > cb) + if(p[pixel[8]] > cb) + if(p[pixel[9]] > cb) + if(p[pixel[11]] > cb) + if(p[pixel[12]] > cb) + if(p[pixel[6]] > cb) + if(p[pixel[5]] > cb) + if(p[pixel[4]] > cb) + {} + else + if(p[pixel[13]] > cb) + {} + else + continue; + else + if(p[pixel[13]] > cb) + if(p[pixel[14]] > cb) + {} + else + continue; + else + continue; + else + if(p[pixel[13]] > cb) + if(p[pixel[14]] > cb) + if(p[pixel[15]] > cb) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else if(p[pixel[10]] < c_b) + if(p[pixel[11]] < c_b) + if(p[pixel[12]] < c_b) + if(p[pixel[13]] < c_b) + if(p[pixel[14]] < c_b) + if(p[pixel[15]] < c_b) + {} + else + if(p[pixel[6]] < c_b) + if(p[pixel[7]] < c_b) + if(p[pixel[8]] < c_b) + if(p[pixel[9]] < c_b) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + if(p[pixel[5]] < c_b) + if(p[pixel[6]] < c_b) + if(p[pixel[7]] < c_b) + if(p[pixel[8]] < c_b) + if(p[pixel[9]] < c_b) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + if(p[pixel[4]] < c_b) + if(p[pixel[5]] < c_b) + if(p[pixel[6]] < c_b) + if(p[pixel[7]] < c_b) + if(p[pixel[8]] < c_b) + if(p[pixel[9]] < c_b) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + if(p[pixel[9]] > cb) + if(p[pixel[7]] > cb) + if(p[pixel[8]] > cb) + if(p[pixel[10]] > cb) + if(p[pixel[11]] > cb) + if(p[pixel[6]] > cb) + if(p[pixel[5]] > cb) + if(p[pixel[4]] > cb) + if(p[pixel[3]] > cb) + {} + else + if(p[pixel[12]] > cb) + {} + else + continue; + else + if(p[pixel[12]] > cb) + if(p[pixel[13]] > cb) + {} + else + continue; + else + continue; + else + if(p[pixel[12]] > cb) + if(p[pixel[13]] > cb) + if(p[pixel[14]] > cb) + {} + else + continue; + else + continue; + else + continue; + else + if(p[pixel[12]] > cb) + if(p[pixel[13]] > cb) + if(p[pixel[14]] > cb) + if(p[pixel[15]] > cb) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else if(p[pixel[9]] < c_b) + if(p[pixel[10]] < c_b) + if(p[pixel[11]] < c_b) + if(p[pixel[12]] < c_b) + if(p[pixel[13]] < c_b) + if(p[pixel[14]] < c_b) + if(p[pixel[15]] < c_b) + {} + else + if(p[pixel[6]] < c_b) + if(p[pixel[7]] < c_b) + if(p[pixel[8]] < c_b) + {} + else + continue; + else + continue; + else + continue; + else + if(p[pixel[5]] < c_b) + if(p[pixel[6]] < c_b) + if(p[pixel[7]] < c_b) + if(p[pixel[8]] < c_b) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + if(p[pixel[4]] < c_b) + if(p[pixel[5]] < c_b) + if(p[pixel[6]] < c_b) + if(p[pixel[7]] < c_b) + if(p[pixel[8]] < c_b) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + if(p[pixel[3]] < c_b) + if(p[pixel[4]] < c_b) + if(p[pixel[5]] < c_b) + if(p[pixel[6]] < c_b) + if(p[pixel[7]] < c_b) + if(p[pixel[8]] < c_b) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + if(p[pixel[8]] > cb) + if(p[pixel[7]] > cb) + if(p[pixel[9]] > cb) + if(p[pixel[10]] > cb) + if(p[pixel[6]] > cb) + if(p[pixel[5]] > cb) + if(p[pixel[4]] > cb) + if(p[pixel[3]] > cb) + if(p[pixel[2]] > cb) + {} + else + if(p[pixel[11]] > cb) + {} + else + continue; + else + if(p[pixel[11]] > cb) + if(p[pixel[12]] > cb) + {} + else + continue; + else + continue; + else + if(p[pixel[11]] > cb) + if(p[pixel[12]] > cb) + if(p[pixel[13]] > cb) + {} + else + continue; + else + continue; + else + continue; + else + if(p[pixel[11]] > cb) + if(p[pixel[12]] > cb) + if(p[pixel[13]] > cb) + if(p[pixel[14]] > cb) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + if(p[pixel[11]] > cb) + if(p[pixel[12]] > cb) + if(p[pixel[13]] > cb) + if(p[pixel[14]] > cb) + if(p[pixel[15]] > cb) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else if(p[pixel[8]] < c_b) + if(p[pixel[9]] < c_b) + if(p[pixel[10]] < c_b) + if(p[pixel[11]] < c_b) + if(p[pixel[12]] < c_b) + if(p[pixel[13]] < c_b) + if(p[pixel[14]] < c_b) + if(p[pixel[15]] < c_b) + {} + else + if(p[pixel[6]] < c_b) + if(p[pixel[7]] < c_b) + {} + else + continue; + else + continue; + else + if(p[pixel[5]] < c_b) + if(p[pixel[6]] < c_b) + if(p[pixel[7]] < c_b) + {} + else + continue; + else + continue; + else + continue; + else + if(p[pixel[4]] < c_b) + if(p[pixel[5]] < c_b) + if(p[pixel[6]] < c_b) + if(p[pixel[7]] < c_b) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + if(p[pixel[3]] < c_b) + if(p[pixel[4]] < c_b) + if(p[pixel[5]] < c_b) + if(p[pixel[6]] < c_b) + if(p[pixel[7]] < c_b) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + if(p[pixel[2]] < c_b) + if(p[pixel[3]] < c_b) + if(p[pixel[4]] < c_b) + if(p[pixel[5]] < c_b) + if(p[pixel[6]] < c_b) + if(p[pixel[7]] < c_b) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + if(p[pixel[7]] > cb) + if(p[pixel[8]] > cb) + if(p[pixel[9]] > cb) + if(p[pixel[6]] > cb) + if(p[pixel[5]] > cb) + if(p[pixel[4]] > cb) + if(p[pixel[3]] > cb) + if(p[pixel[2]] > cb) + if(p[pixel[1]] > cb) + {} + else + if(p[pixel[10]] > cb) + {} + else + continue; + else + if(p[pixel[10]] > cb) + if(p[pixel[11]] > cb) + {} + else + continue; + else + continue; + else + if(p[pixel[10]] > cb) + if(p[pixel[11]] > cb) + if(p[pixel[12]] > cb) + {} + else + continue; + else + continue; + else + continue; + else + if(p[pixel[10]] > cb) + if(p[pixel[11]] > cb) + if(p[pixel[12]] > cb) + if(p[pixel[13]] > cb) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + if(p[pixel[10]] > cb) + if(p[pixel[11]] > cb) + if(p[pixel[12]] > cb) + if(p[pixel[13]] > cb) + if(p[pixel[14]] > cb) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + if(p[pixel[10]] > cb) + if(p[pixel[11]] > cb) + if(p[pixel[12]] > cb) + if(p[pixel[13]] > cb) + if(p[pixel[14]] > cb) + if(p[pixel[15]] > cb) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else if(p[pixel[7]] < c_b) + if(p[pixel[8]] < c_b) + if(p[pixel[9]] < c_b) + if(p[pixel[6]] < c_b) + if(p[pixel[5]] < c_b) + if(p[pixel[4]] < c_b) + if(p[pixel[3]] < c_b) + if(p[pixel[2]] < c_b) + if(p[pixel[1]] < c_b) + {} + else + if(p[pixel[10]] < c_b) + {} + else + continue; + else + if(p[pixel[10]] < c_b) + if(p[pixel[11]] < c_b) + {} + else + continue; + else + continue; + else + if(p[pixel[10]] < c_b) + if(p[pixel[11]] < c_b) + if(p[pixel[12]] < c_b) + {} + else + continue; + else + continue; + else + continue; + else + if(p[pixel[10]] < c_b) + if(p[pixel[11]] < c_b) + if(p[pixel[12]] < c_b) + if(p[pixel[13]] < c_b) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + if(p[pixel[10]] < c_b) + if(p[pixel[11]] < c_b) + if(p[pixel[12]] < c_b) + if(p[pixel[13]] < c_b) + if(p[pixel[14]] < c_b) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + if(p[pixel[10]] < c_b) + if(p[pixel[11]] < c_b) + if(p[pixel[12]] < c_b) + if(p[pixel[13]] < c_b) + if(p[pixel[14]] < c_b) + if(p[pixel[15]] < c_b) + {} + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + else + continue; + if(num_corners == rsize) + { + rsize*=2; + ret_corners = (xy*)realloc(ret_corners, sizeof(xy)*rsize); + } + ret_corners[num_corners].x = x; + ret_corners[num_corners].y = y; + num_corners++; + + } + + *ret_num_corners = num_corners; + return ret_corners; + +} + +// clang-format on diff --git a/media/libaom/src/third_party/fastfeat/nonmax.c b/media/libaom/src/third_party/fastfeat/nonmax.c new file mode 100644 index 000000000..0438c4dc1 --- /dev/null +++ b/media/libaom/src/third_party/fastfeat/nonmax.c @@ -0,0 +1,121 @@ +// clang-format off +#include <stdlib.h> +#include "fast.h" + + +#define Compare(X, Y) ((X)>=(Y)) + +xy* nonmax_suppression(const xy* corners, const int* scores, int num_corners, int* ret_num_nonmax) +{ + int num_nonmax=0; + int last_row; + int* row_start; + int i, j; + xy* ret_nonmax; + const int sz = (int)num_corners; + + /*Point above points (roughly) to the pixel above the one of interest, if there + is a feature there.*/ + int point_above = 0; + int point_below = 0; + + + if(num_corners < 1) + { + *ret_num_nonmax = 0; + return 0; + } + + ret_nonmax = (xy*)malloc(num_corners * sizeof(xy)); + + /* Find where each row begins + (the corners are output in raster scan order). A beginning of -1 signifies + that there are no corners on that row. */ + last_row = corners[num_corners-1].y; + row_start = (int*)malloc((last_row+1)*sizeof(int)); + + for(i=0; i < last_row+1; i++) + row_start[i] = -1; + + { + int prev_row = -1; + for(i=0; i< num_corners; i++) + if(corners[i].y != prev_row) + { + row_start[corners[i].y] = i; + prev_row = corners[i].y; + } + } + + + + for(i=0; i < sz; i++) + { + int score = scores[i]; + xy pos = corners[i]; + + /*Check left */ + if(i > 0) + if(corners[i-1].x == pos.x-1 && corners[i-1].y == pos.y && Compare(scores[i-1], score)) + continue; + + /*Check right*/ + if(i < (sz - 1)) + if(corners[i+1].x == pos.x+1 && corners[i+1].y == pos.y && Compare(scores[i+1], score)) + continue; + + /*Check above (if there is a valid row above)*/ + if(pos.y > 0) + if (row_start[pos.y - 1] != -1) + { + /*Make sure that current point_above is one + row above.*/ + if(corners[point_above].y < pos.y - 1) + point_above = row_start[pos.y-1]; + + /*Make point_above point to the first of the pixels above the current point, + if it exists.*/ + for(; corners[point_above].y < pos.y && corners[point_above].x < pos.x - 1; point_above++) + {} + + + for(j=point_above; corners[j].y < pos.y && corners[j].x <= pos.x + 1; j++) + { + int x = corners[j].x; + if( (x == pos.x - 1 || x ==pos.x || x == pos.x+1) && Compare(scores[j], score)) + goto cont; + } + + } + + /*Check below (if there is anything below)*/ + if(pos.y >= 0) + if (pos.y != last_row && row_start[pos.y + 1] != -1 && point_below < sz) /*Nothing below*/ + { + if(corners[point_below].y < pos.y + 1) + point_below = row_start[pos.y+1]; + + /* Make point below point to one of the pixels belowthe current point, if it + exists.*/ + for(; point_below < sz && corners[point_below].y == pos.y+1 && corners[point_below].x < pos.x - 1; point_below++) + {} + + for(j=point_below; j < sz && corners[j].y == pos.y+1 && corners[j].x <= pos.x + 1; j++) + { + int x = corners[j].x; + if( (x == pos.x - 1 || x ==pos.x || x == pos.x+1) && Compare(scores[j],score)) + goto cont; + } + } + + ret_nonmax[num_nonmax++] = corners[i]; +cont: + ; + } + + free(row_start); + *ret_num_nonmax = num_nonmax; + return ret_nonmax; +} + +// clang-format on |