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author | trav90 <travawine@palemoon.org> | 2018-10-19 21:52:15 -0500 |
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committer | trav90 <travawine@palemoon.org> | 2018-10-19 21:52:20 -0500 |
commit | bbcc64772580c8a979288791afa02d30bc476d2e (patch) | |
tree | 437ce94c3fdd7497508e5b55de06c6d011678597 /third_party/aom/av1/encoder/ransac.c | |
parent | 14805f6ddbfb173c327768fff9f81f40ce5e81b0 (diff) | |
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Update aom to v1.0.0
Update aom to commit id d14c5bb4f336ef1842046089849dee4a301fbbf0.
Diffstat (limited to 'third_party/aom/av1/encoder/ransac.c')
-rw-r--r-- | third_party/aom/av1/encoder/ransac.c | 313 |
1 files changed, 0 insertions, 313 deletions
diff --git a/third_party/aom/av1/encoder/ransac.c b/third_party/aom/av1/encoder/ransac.c index 6d2eb4183..781f528eb 100644 --- a/third_party/aom/av1/encoder/ransac.c +++ b/third_party/aom/av1/encoder/ransac.c @@ -80,60 +80,6 @@ static void project_points_double_affine(double *mat, double *points, } } -static void project_points_double_hortrapezoid(double *mat, double *points, - double *proj, const int n, - const int stride_points, - const int stride_proj) { - int i; - double x, y, Z, Z_inv; - for (i = 0; i < n; ++i) { - x = *(points++), y = *(points++); - Z_inv = mat[7] * y + 1; - assert(fabs(Z_inv) > 0.000001); - Z = 1. / Z_inv; - *(proj++) = (mat[2] * x + mat[3] * y + mat[0]) * Z; - *(proj++) = (mat[5] * y + mat[1]) * Z; - points += stride_points - 2; - proj += stride_proj - 2; - } -} - -static void project_points_double_vertrapezoid(double *mat, double *points, - double *proj, const int n, - const int stride_points, - const int stride_proj) { - int i; - double x, y, Z, Z_inv; - for (i = 0; i < n; ++i) { - x = *(points++), y = *(points++); - Z_inv = mat[6] * x + 1; - assert(fabs(Z_inv) > 0.000001); - Z = 1. / Z_inv; - *(proj++) = (mat[2] * x + mat[0]) * Z; - *(proj++) = (mat[4] * x + mat[5] * y + mat[1]) * Z; - points += stride_points - 2; - proj += stride_proj - 2; - } -} - -static void project_points_double_homography(double *mat, double *points, - double *proj, const int n, - const int stride_points, - const int stride_proj) { - int i; - double x, y, Z, Z_inv; - for (i = 0; i < n; ++i) { - x = *(points++), y = *(points++); - Z_inv = mat[6] * x + mat[7] * y + 1; - assert(fabs(Z_inv) > 0.000001); - Z = 1. / Z_inv; - *(proj++) = (mat[2] * x + mat[3] * y + mat[0]) * Z; - *(proj++) = (mat[4] * x + mat[5] * y + mat[1]) * Z; - points += stride_points - 2; - proj += stride_proj - 2; - } -} - static void normalize_homography(double *pts, int n, double *T) { double *p = pts; double mean[2] = { 0, 0 }; @@ -193,22 +139,6 @@ static void denormalize_homography(double *params, double *T1, double *T2) { multiply_mat(iT2, params2, params, 3, 3, 3); } -static void denormalize_homography_reorder(double *params, double *T1, - double *T2) { - double params_denorm[MAX_PARAMDIM]; - memcpy(params_denorm, params, sizeof(*params) * 8); - params_denorm[8] = 1.0; - denormalize_homography(params_denorm, T1, T2); - params[0] = params_denorm[2]; - params[1] = params_denorm[5]; - params[2] = params_denorm[0]; - params[3] = params_denorm[1]; - params[4] = params_denorm[3]; - params[5] = params_denorm[4]; - params[6] = params_denorm[6]; - params[7] = params_denorm[7]; -} - static void denormalize_affine_reorder(double *params, double *T1, double *T2) { double params_denorm[MAX_PARAMDIM]; params_denorm[0] = params[0]; @@ -377,217 +307,6 @@ static int find_affine(int np, double *pts1, double *pts2, double *mat) { return 0; } -static int find_vertrapezoid(int np, double *pts1, double *pts2, double *mat) { - const int np3 = np * 3; - double *a = (double *)aom_malloc(sizeof(*a) * np3 * 14); - double *U = a + np3 * 7; - double S[7], V[7 * 7], H[9]; - int i, mini; - double sx, sy, dx, dy; - double T1[9], T2[9]; - - normalize_homography(pts1, np, T1); - normalize_homography(pts2, np, T2); - - for (i = 0; i < np; ++i) { - dx = *(pts2++); - dy = *(pts2++); - sx = *(pts1++); - sy = *(pts1++); - - a[i * 3 * 7 + 0] = a[i * 3 * 7 + 1] = 0; - a[i * 3 * 7 + 2] = -sx; - a[i * 3 * 7 + 3] = -sy; - a[i * 3 * 7 + 4] = -1; - a[i * 3 * 7 + 5] = dy * sx; - a[i * 3 * 7 + 6] = dy; - - a[(i * 3 + 1) * 7 + 0] = sx; - a[(i * 3 + 1) * 7 + 1] = 1; - a[(i * 3 + 1) * 7 + 2] = a[(i * 3 + 1) * 7 + 3] = a[(i * 3 + 1) * 7 + 4] = - 0; - a[(i * 3 + 1) * 7 + 5] = -dx * sx; - a[(i * 3 + 1) * 7 + 6] = -dx; - - a[(i * 3 + 2) * 7 + 0] = -dy * sx; - a[(i * 3 + 2) * 7 + 1] = -dy; - a[(i * 3 + 2) * 7 + 2] = dx * sx; - a[(i * 3 + 2) * 7 + 3] = dx * sy; - a[(i * 3 + 2) * 7 + 4] = dx; - a[(i * 3 + 2) * 7 + 5] = a[(i * 3 + 2) * 7 + 6] = 0; - } - if (SVD(U, S, V, a, np3, 7)) { - aom_free(a); - return 1; - } else { - double minS = 1e12; - mini = -1; - for (i = 0; i < 7; ++i) { - if (S[i] < minS) { - minS = S[i]; - mini = i; - } - } - } - H[1] = H[7] = 0; - for (i = 0; i < 1; i++) H[i] = V[i * 7 + mini]; - for (; i < 6; i++) H[i + 1] = V[i * 7 + mini]; - for (; i < 7; i++) H[i + 2] = V[i * 7 + mini]; - - denormalize_homography_reorder(H, T1, T2); - aom_free(a); - if (H[8] == 0.0) { - return 1; - } else { - // normalize - double f = 1.0 / H[8]; - for (i = 0; i < 8; i++) mat[i] = f * H[i]; - } - return 0; -} - -static int find_hortrapezoid(int np, double *pts1, double *pts2, double *mat) { - const int np3 = np * 3; - double *a = (double *)aom_malloc(sizeof(*a) * np3 * 14); - double *U = a + np3 * 7; - double S[7], V[7 * 7], H[9]; - int i, mini; - double sx, sy, dx, dy; - double T1[9], T2[9]; - - normalize_homography(pts1, np, T1); - normalize_homography(pts2, np, T2); - - for (i = 0; i < np; ++i) { - dx = *(pts2++); - dy = *(pts2++); - sx = *(pts1++); - sy = *(pts1++); - - a[i * 3 * 7 + 0] = a[i * 3 * 7 + 1] = a[i * 3 * 7 + 2] = 0; - a[i * 3 * 7 + 3] = -sy; - a[i * 3 * 7 + 4] = -1; - a[i * 3 * 7 + 5] = dy * sy; - a[i * 3 * 7 + 6] = dy; - - a[(i * 3 + 1) * 7 + 0] = sx; - a[(i * 3 + 1) * 7 + 1] = sy; - a[(i * 3 + 1) * 7 + 2] = 1; - a[(i * 3 + 1) * 7 + 3] = a[(i * 3 + 1) * 7 + 4] = 0; - a[(i * 3 + 1) * 7 + 5] = -dx * sy; - a[(i * 3 + 1) * 7 + 6] = -dx; - - a[(i * 3 + 2) * 7 + 0] = -dy * sx; - a[(i * 3 + 2) * 7 + 1] = -dy * sy; - a[(i * 3 + 2) * 7 + 2] = -dy; - a[(i * 3 + 2) * 7 + 3] = dx * sy; - a[(i * 3 + 2) * 7 + 4] = dx; - a[(i * 3 + 2) * 7 + 5] = a[(i * 3 + 2) * 7 + 6] = 0; - } - - if (SVD(U, S, V, a, np3, 7)) { - aom_free(a); - return 1; - } else { - double minS = 1e12; - mini = -1; - for (i = 0; i < 7; ++i) { - if (S[i] < minS) { - minS = S[i]; - mini = i; - } - } - } - H[3] = H[6] = 0; - for (i = 0; i < 3; i++) H[i] = V[i * 7 + mini]; - for (; i < 5; i++) H[i + 1] = V[i * 7 + mini]; - for (; i < 7; i++) H[i + 2] = V[i * 7 + mini]; - - denormalize_homography_reorder(H, T1, T2); - aom_free(a); - if (H[8] == 0.0) { - return 1; - } else { - // normalize - double f = 1.0 / H[8]; - for (i = 0; i < 8; i++) mat[i] = f * H[i]; - } - return 0; -} - -static int find_homography(int np, double *pts1, double *pts2, double *mat) { - // Implemented from Peter Kovesi's normalized implementation - const int np3 = np * 3; - double *a = (double *)aom_malloc(sizeof(*a) * np3 * 18); - double *U = a + np3 * 9; - double S[9], V[9 * 9], H[9]; - int i, mini; - double sx, sy, dx, dy; - double T1[9], T2[9]; - - normalize_homography(pts1, np, T1); - normalize_homography(pts2, np, T2); - - for (i = 0; i < np; ++i) { - dx = *(pts2++); - dy = *(pts2++); - sx = *(pts1++); - sy = *(pts1++); - - a[i * 3 * 9 + 0] = a[i * 3 * 9 + 1] = a[i * 3 * 9 + 2] = 0; - a[i * 3 * 9 + 3] = -sx; - a[i * 3 * 9 + 4] = -sy; - a[i * 3 * 9 + 5] = -1; - a[i * 3 * 9 + 6] = dy * sx; - a[i * 3 * 9 + 7] = dy * sy; - a[i * 3 * 9 + 8] = dy; - - a[(i * 3 + 1) * 9 + 0] = sx; - a[(i * 3 + 1) * 9 + 1] = sy; - a[(i * 3 + 1) * 9 + 2] = 1; - a[(i * 3 + 1) * 9 + 3] = a[(i * 3 + 1) * 9 + 4] = a[(i * 3 + 1) * 9 + 5] = - 0; - a[(i * 3 + 1) * 9 + 6] = -dx * sx; - a[(i * 3 + 1) * 9 + 7] = -dx * sy; - a[(i * 3 + 1) * 9 + 8] = -dx; - - a[(i * 3 + 2) * 9 + 0] = -dy * sx; - a[(i * 3 + 2) * 9 + 1] = -dy * sy; - a[(i * 3 + 2) * 9 + 2] = -dy; - a[(i * 3 + 2) * 9 + 3] = dx * sx; - a[(i * 3 + 2) * 9 + 4] = dx * sy; - a[(i * 3 + 2) * 9 + 5] = dx; - a[(i * 3 + 2) * 9 + 6] = a[(i * 3 + 2) * 9 + 7] = a[(i * 3 + 2) * 9 + 8] = - 0; - } - - if (SVD(U, S, V, a, np3, 9)) { - aom_free(a); - return 1; - } else { - double minS = 1e12; - mini = -1; - for (i = 0; i < 9; ++i) { - if (S[i] < minS) { - minS = S[i]; - mini = i; - } - } - } - - for (i = 0; i < 9; i++) H[i] = V[i * 9 + mini]; - denormalize_homography_reorder(H, T1, T2); - aom_free(a); - if (H[8] == 0.0) { - return 1; - } else { - // normalize - double f = 1.0 / H[8]; - for (i = 0; i < 8; i++) mat[i] = f * H[i]; - } - return 0; -} - static int get_rand_indices(int npoints, int minpts, int *indices, unsigned int *seed) { int i, j; @@ -860,11 +579,6 @@ static int is_degenerate_affine(double *p) { return is_collinear3(p, p + 2, p + 4); } -static int is_degenerate_homography(double *p) { - return is_collinear3(p, p + 2, p + 4) || is_collinear3(p, p + 2, p + 6) || - is_collinear3(p, p + 4, p + 6) || is_collinear3(p + 2, p + 4, p + 6); -} - int ransac_translation(int *matched_points, int npoints, int *num_inliers_by_motion, double *params_by_motion, int num_desired_motions) { @@ -887,30 +601,3 @@ int ransac_affine(int *matched_points, int npoints, int *num_inliers_by_motion, params_by_motion, num_desired_motions, 3, is_degenerate_affine, find_affine, project_points_double_affine); } - -int ransac_homography(int *matched_points, int npoints, - int *num_inliers_by_motion, double *params_by_motion, - int num_desired_motions) { - return ransac(matched_points, npoints, num_inliers_by_motion, - params_by_motion, num_desired_motions, 4, - is_degenerate_homography, find_homography, - project_points_double_homography); -} - -int ransac_hortrapezoid(int *matched_points, int npoints, - int *num_inliers_by_motion, double *params_by_motion, - int num_desired_motions) { - return ransac(matched_points, npoints, num_inliers_by_motion, - params_by_motion, num_desired_motions, 4, - is_degenerate_homography, find_hortrapezoid, - project_points_double_hortrapezoid); -} - -int ransac_vertrapezoid(int *matched_points, int npoints, - int *num_inliers_by_motion, double *params_by_motion, - int num_desired_motions) { - return ransac(matched_points, npoints, num_inliers_by_motion, - params_by_motion, num_desired_motions, 4, - is_degenerate_homography, find_vertrapezoid, - project_points_double_vertrapezoid); -} |