void ccv_saturation(ccv_dense_matrix_t* a, ccv_dense_matrix_t** b, int type, double ds) { assert(CCV_GET_CHANNEL(a->type) == CCV_C3); // only works in RGB space ccv_declare_derived_signature(sig, a->sig != 0, ccv_sign_with_format(64, "ccv_saturation(%la)", ds), a->sig, CCV_EOF_SIGN); type = (type == 0) ? CCV_GET_DATA_TYPE(a->type) | CCV_GET_CHANNEL(a->type) : CCV_GET_DATA_TYPE(type) | CCV_GET_CHANNEL(a->type); ccv_dense_matrix_t* db = *b = ccv_dense_matrix_renew(*b, a->rows, a->cols, CCV_ALL_DATA_TYPE | CCV_GET_CHANNEL(a->type), type, sig); ccv_object_return_if_cached(, db); int i, j; unsigned char* aptr = a->data.u8; unsigned char* bptr = db->data.u8; #define for_block(_for_get, _for_set) \ for (i = 0; i < a->rows; i++) \ { \ for (j = 0; j < a->cols; j++) \ { \ double gs = _for_get(aptr, j * 3, 0) * 0.299 + _for_get(aptr, j * 3 + 1, 0) * 0.587 + _for_get(aptr, j * 3 + 2, 0) * 0.114; \ _for_set(bptr, j * 3, (_for_get(aptr, j * 3, 0) - gs) * ds + gs, 0); \ _for_set(bptr, j * 3 + 1, (_for_get(aptr, j * 3 + 1, 0) - gs) * ds + gs, 0); \ _for_set(bptr, j * 3 + 2, (_for_get(aptr, j * 3 + 2, 0) - gs) * ds + gs, 0); \ } \ aptr += a->step; \ bptr += db->step; \ } ccv_matrix_getter(a->type, ccv_matrix_setter, db->type, for_block); #undef for_block }
void ccv_flip(ccv_dense_matrix_t* a, ccv_dense_matrix_t** b, int btype, int type) { /* this is the special case where ccv_declare_derived_signature_* macros cannot handle properly */ uint64_t sig = a->sig; if (type & CCV_FLIP_Y) sig = (a->sig == 0) ? 0 : ccv_cache_generate_signature("ccv_flip_y", 10, sig, CCV_EOF_SIGN); if (type & CCV_FLIP_X) sig = (a->sig == 0) ? 0 : ccv_cache_generate_signature("ccv_flip_x", 10, sig, CCV_EOF_SIGN); ccv_dense_matrix_t* db; if (b == 0) { db = a; if (a->sig != 0) { btype = CCV_GET_DATA_TYPE(a->type) | CCV_GET_CHANNEL(a->type); sig = ccv_cache_generate_signature((const char*)&btype, sizeof(int), sig, CCV_EOF_SIGN); a->sig = sig; } } else { btype = CCV_GET_DATA_TYPE(a->type) | CCV_GET_CHANNEL(a->type); *b = db = ccv_dense_matrix_renew(*b, a->rows, a->cols, btype, btype, sig); ccv_object_return_if_cached(, db); memcpy(db->data.u8, a->data.u8, a->rows * a->step); } if (type & CCV_FLIP_Y) _ccv_flip_y_self(db); if (type & CCV_FLIP_X) _ccv_flip_x_self(db); }
void ccv_slice(ccv_matrix_t* a, ccv_matrix_t** b, int btype, int y, int x, int rows, int cols) { int type = *(int*)a; if (type & CCV_MATRIX_DENSE) { ccv_dense_matrix_t* da = ccv_get_dense_matrix(a); ccv_declare_derived_signature(sig, da->sig != 0, ccv_sign_with_format(128, "ccv_slice(%d,%d,%d,%d)", y, x, rows, cols), da->sig, CCV_EOF_SIGN); btype = (btype == 0) ? CCV_GET_DATA_TYPE(da->type) | CCV_GET_CHANNEL(da->type) : CCV_GET_DATA_TYPE(btype) | CCV_GET_CHANNEL(da->type); ccv_dense_matrix_t* db = *b = ccv_dense_matrix_renew(*b, rows, cols, CCV_ALL_DATA_TYPE | CCV_GET_CHANNEL(da->type), btype, sig); ccv_object_return_if_cached(, db); int i, j, ch = CCV_GET_CHANNEL(da->type); int dx = 0, dy = 0; if (!(y >= 0 && y + rows <= da->rows && x >= 0 && x + cols <= da->cols)) { ccv_zero(db); if (y < 0) { rows += y; dy = -y; y = 0; } if (y + rows > da->rows) rows = da->rows - y; if (x < 0) { cols += x; dx = -x; x = 0; } if (x + cols > da->cols) cols = da->cols - x; } unsigned char* a_ptr = da->data.u8 + x * ch * CCV_GET_DATA_TYPE_SIZE(da->type) + y * da->step; unsigned char* b_ptr = db->data.u8 + dx * ch * CCV_GET_DATA_TYPE_SIZE(db->type) + dy * db->step; #define for_block(_for_set, _for_get) \ for (i = 0; i < rows; i++) \ { \ for (j = 0; j < cols * ch; j++) \ { \ _for_set(b_ptr, j, _for_get(a_ptr, j, 0), 0); \ } \ a_ptr += da->step; \ b_ptr += db->step; \ } ccv_matrix_setter(db->type, ccv_matrix_getter, da->type, for_block); #undef for_block } else if (type & CCV_MATRIX_SPARSE) {
void ccv_resample(ccv_dense_matrix_t* a, ccv_dense_matrix_t** b, int btype, int rows, int cols, int type) { assert(rows > 0 && cols > 0); ccv_declare_derived_signature(sig, a->sig != 0, ccv_sign_with_format(64, "ccv_resample(%d,%d,%d)", rows, cols, type), a->sig, CCV_EOF_SIGN); btype = (btype == 0) ? CCV_GET_DATA_TYPE(a->type) | CCV_GET_CHANNEL(a->type) : CCV_GET_DATA_TYPE(btype) | CCV_GET_CHANNEL(a->type); ccv_dense_matrix_t* db = *b = ccv_dense_matrix_renew(*b, rows, cols, CCV_ALL_DATA_TYPE | CCV_GET_CHANNEL(a->type), btype, sig); ccv_object_return_if_cached(, db); if (a->rows == db->rows && a->cols == db->cols) { if (CCV_GET_CHANNEL(a->type) == CCV_GET_CHANNEL(db->type) && CCV_GET_DATA_TYPE(db->type) == CCV_GET_DATA_TYPE(a->type)) memcpy(db->data.u8, a->data.u8, a->rows * a->step); else { ccv_shift(a, (ccv_matrix_t**)&db, 0, 0, 0); } return; } if ((type & CCV_INTER_AREA) && a->rows >= db->rows && a->cols >= db->cols) { /* using the fast alternative (fix point scale, 0x100 to avoid overflow) */ if (CCV_GET_DATA_TYPE(a->type) == CCV_8U && CCV_GET_DATA_TYPE(db->type) == CCV_8U && a->rows * a->cols / (db->rows * db->cols) < 0x100) _ccv_resample_area_8u(a, db); else _ccv_resample_area(a, db); } else if (type & CCV_INTER_CUBIC) { if (CCV_GET_DATA_TYPE(db->type) == CCV_32F || CCV_GET_DATA_TYPE(db->type) == CCV_64F) _ccv_resample_cubic_float_only(a, db); else _ccv_resample_cubic_integer_only(a, db); } else if (type & CCV_INTER_LINEAR) { assert(0 && "CCV_INTER_LINEAR is not implemented"); } else if (type & CCV_INTER_LINEAR) { assert(0 && "CCV_INTER_LANCZOS is not implemented"); } }
ccv_dense_matrix_t* ccv_dense_matrix_new(int rows, int cols, int type, void* data, uint64_t sig) { ccv_dense_matrix_t* mat; if (ccv_cache_opt && sig != 0 && !data && !(type & CCV_NO_DATA_ALLOC)) { uint8_t type; mat = (ccv_dense_matrix_t*)ccv_cache_out(&ccv_cache, sig, &type); if (mat) { assert(type == 0); mat->type |= CCV_GARBAGE; // set the flag so the upper level function knows this is from recycle-bin mat->refcount = 1; return mat; } } if (type & CCV_NO_DATA_ALLOC) { mat = (ccv_dense_matrix_t*)ccmalloc(sizeof(ccv_dense_matrix_t)); mat->type = (CCV_GET_CHANNEL(type) | CCV_GET_DATA_TYPE(type) | CCV_MATRIX_DENSE | CCV_NO_DATA_ALLOC) & ~CCV_GARBAGE; mat->data.u8 = data; } else { mat = (ccv_dense_matrix_t*)(data ? data : ccmalloc(ccv_compute_dense_matrix_size(rows, cols, type))); mat->type = (CCV_GET_CHANNEL(type) | CCV_GET_DATA_TYPE(type) | CCV_MATRIX_DENSE) & ~CCV_GARBAGE; mat->type |= data ? CCV_UNMANAGED : CCV_REUSABLE; // it still could be reusable because the signature could be derived one. mat->data.u8 = (unsigned char*)(mat + 1); } mat->sig = sig; mat->rows = rows; mat->cols = cols; mat->step = (cols * CCV_GET_DATA_TYPE_SIZE(type) * CCV_GET_CHANNEL(type) + 3) & -4; mat->refcount = 1; return mat; }
void ccv_subtract(ccv_matrix_t* a, ccv_matrix_t* b, ccv_matrix_t** c, int type) { ccv_dense_matrix_t* da = ccv_get_dense_matrix(a); ccv_dense_matrix_t* db = ccv_get_dense_matrix(b); assert(da->rows == db->rows && da->cols == db->cols && CCV_GET_DATA_TYPE(da->type) == CCV_GET_DATA_TYPE(db->type) && CCV_GET_CHANNEL(da->type) == CCV_GET_CHANNEL(db->type)); ccv_declare_derived_signature(sig, da->sig != 0 && db->sig != 0, ccv_sign_with_literal("ccv_subtract"), da->sig, db->sig, CCV_EOF_SIGN); int no_8u_type = (da->type & CCV_8U) ? CCV_32S : da->type; type = (type == 0) ? CCV_GET_DATA_TYPE(no_8u_type) | CCV_GET_CHANNEL(da->type) : CCV_GET_DATA_TYPE(type) | CCV_GET_CHANNEL(da->type); ccv_dense_matrix_t* dc = *c = ccv_dense_matrix_renew(*c, da->rows, da->cols, CCV_ALL_DATA_TYPE | CCV_GET_CHANNEL(da->type), type, sig); ccv_object_return_if_cached(, dc); int i, j, ch = CCV_GET_CHANNEL(da->type); unsigned char* aptr = da->data.u8; unsigned char* bptr = db->data.u8; unsigned char* cptr = dc->data.u8; #define for_block(_for_get, _for_set) \ for (i = 0; i < da->rows; i++) \ { \ for (j = 0; j < da->cols * ch; j++) \ _for_set(cptr, j, _for_get(aptr, j, 0) - _for_get(bptr, j, 0), 0); \ aptr += da->step; \ bptr += db->step; \ cptr += dc->step; \ } ccv_matrix_getter(da->type, ccv_matrix_setter, dc->type, for_block); #undef for_block }
void ccv_gemm(ccv_matrix_t* a, ccv_matrix_t* b, double alpha, ccv_matrix_t* c, double beta, int transpose, ccv_matrix_t** d, int type) { ccv_dense_matrix_t* da = ccv_get_dense_matrix(a); ccv_dense_matrix_t* db = ccv_get_dense_matrix(b); ccv_dense_matrix_t* dc = (c == 0) ? 0 : ccv_get_dense_matrix(c); assert(CCV_GET_DATA_TYPE(da->type) == CCV_GET_DATA_TYPE(db->type) && CCV_GET_CHANNEL(da->type) == 1 && CCV_GET_CHANNEL(db->type) == 1 && ((transpose & CCV_A_TRANSPOSE) ? da->rows : da->cols) == ((transpose & CCV_B_TRANSPOSE) ? db->cols : db->rows)); if (dc != 0) assert(CCV_GET_DATA_TYPE(dc->type) == CCV_GET_DATA_TYPE(da->type) && CCV_GET_CHANNEL(dc->type) == 1 && ((transpose & CCV_A_TRANSPOSE) ? da->cols : da->rows) == dc->rows && ((transpose & CCV_B_TRANSPOSE) ? db->rows : db->cols) == dc->cols); ccv_declare_derived_signature_case(sig, ccv_sign_with_format(20, "ccv_gemm(%d)", transpose), ccv_sign_if(dc == 0 && da->sig != 0 && db->sig != 0, da->sig, db->sig, CCV_EOF_SIGN), ccv_sign_if(dc != 0 && da->sig != 0 && db->sig != 0 && dc->sig != 0, da->sig, db->sig, dc->sig, CCV_EOF_SIGN)); type = CCV_GET_DATA_TYPE(da->type) | CCV_GET_CHANNEL(da->type); ccv_dense_matrix_t* dd = *d = ccv_dense_matrix_renew(*d, (transpose & CCV_A_TRANSPOSE) ? da->cols : da->rows, (transpose & CCV_B_TRANSPOSE) ? db->rows : db->cols, type, type, sig); ccv_object_return_if_cached(, dd); if (dd != dc && dc != 0) memcpy(dd->data.u8, dc->data.u8, dc->step * dc->rows); else if (dc == 0) // clean up dd if dc is not provided memset(dd->data.u8, 0, dd->step * dd->rows); #if (defined HAVE_CBLAS || defined HAVE_ACCELERATE_FRAMEWORK) switch (CCV_GET_DATA_TYPE(dd->type)) { case CCV_32F: cblas_sgemm(CblasRowMajor, (transpose & CCV_A_TRANSPOSE) ? CblasTrans : CblasNoTrans, (transpose & CCV_B_TRANSPOSE) ? CblasTrans : CblasNoTrans, dd->rows, dd->cols, (transpose & CCV_A_TRANSPOSE) ? da->rows : da->cols, alpha, da->data.f32, da->cols, db->data.f32, db->cols, beta, dd->data.f32, dd->cols); break; case CCV_64F: cblas_dgemm(CblasRowMajor, (transpose & CCV_A_TRANSPOSE) ? CblasTrans : CblasNoTrans, (transpose & CCV_B_TRANSPOSE) ? CblasTrans : CblasNoTrans, dd->rows, dd->cols, (transpose & CCV_A_TRANSPOSE) ? da->rows : da->cols, alpha, da->data.f64, da->cols, db->data.f64, db->cols, beta, dd->data.f64, dd->cols); break; } #else assert(0 && "You need a BLAS compatible library for this function, e.g. libatlas."); #endif }
int ccv_matrix_eq(ccv_matrix_t* a, ccv_matrix_t* b) { int a_type = *(int*)a; int b_type = *(int*)b; if ((a_type & CCV_MATRIX_DENSE) && (b_type & CCV_MATRIX_DENSE)) { ccv_dense_matrix_t* da = (ccv_dense_matrix_t*)a; ccv_dense_matrix_t* db = (ccv_dense_matrix_t*)b; if (CCV_GET_DATA_TYPE(da->type) != CCV_GET_DATA_TYPE(db->type)) return -1; if (CCV_GET_CHANNEL(da->type) != CCV_GET_CHANNEL(db->type)) return -1; if (da->rows != db->rows) return -1; if (da->cols != db->cols) return -1; int i, j, ch = CCV_GET_CHANNEL(da->type); unsigned char* a_ptr = da->data.u8; unsigned char* b_ptr = db->data.u8; #define for_block(_, _for_get) \ for (i = 0; i < da->rows; i++) \ { \ for (j = 0; j < da->cols * ch; j++) \ { \ if (fabs(_for_get(b_ptr, j, 0) - _for_get(a_ptr, j, 0)) > 1e-4) \ return -1; \ } \ a_ptr += da->step; \ b_ptr += db->step; \ } ccv_matrix_getter(da->type, for_block); #undef for_block } return 0; }
void ccv_resample(ccv_dense_matrix_t* a, ccv_dense_matrix_t** b, int btype, int rows, int cols, int type) { ccv_declare_matrix_signature(sig, a->sig != 0, ccv_sign_with_format(64, "ccv_resample(%d,%d,%d)", rows, cols, type), a->sig, 0); btype = (btype == 0) ? CCV_GET_DATA_TYPE(a->type) | CCV_GET_CHANNEL(a->type) : CCV_GET_DATA_TYPE(btype) | CCV_GET_CHANNEL(a->type); ccv_dense_matrix_t* db = *b = ccv_dense_matrix_renew(*b, rows, cols, CCV_ALL_DATA_TYPE | CCV_GET_CHANNEL(a->type), btype, sig); ccv_matrix_return_if_cached(, db); if (a->rows == db->rows && a->cols == db->cols) { if (CCV_GET_CHANNEL(a->type) == CCV_GET_CHANNEL(db->type) && CCV_GET_DATA_TYPE(db->type) == CCV_GET_DATA_TYPE(a->type)) memcpy(db->data.u8, a->data.u8, a->rows * a->step); else { ccv_shift(a, (ccv_matrix_t**)&db, 0, 0, 0); } return; } switch (type) { case CCV_INTER_AREA: if (a->rows > db->rows && a->cols > db->cols) { /* using the fast alternative (fix point scale, 0x100 to avoid overflow) */ if (CCV_GET_DATA_TYPE(a->type) == CCV_8U && CCV_GET_DATA_TYPE(db->type) == CCV_8U && a->rows * a->cols / (db->rows * db->cols) < 0x100) _ccv_resample_area_8u(a, db); else _ccv_resample_area(a, db); break; } case CCV_INTER_LINEAR: break; case CCV_INTER_CUBIC: break; case CCV_INTER_LANCZOS: break; } }
void ccv_sample_up(ccv_dense_matrix_t* a, ccv_dense_matrix_t** b, int type, int src_x, int src_y) { assert(src_x >= 0 && src_y >= 0); ccv_declare_matrix_signature(sig, a->sig != 0, ccv_sign_with_format(64, "ccv_sample_up(%d,%d)", src_x, src_y), a->sig, 0); type = (type == 0) ? CCV_GET_DATA_TYPE(a->type) | CCV_GET_CHANNEL(a->type) : CCV_GET_DATA_TYPE(type) | CCV_GET_CHANNEL(a->type); ccv_dense_matrix_t* db = *b = ccv_dense_matrix_renew(*b, a->rows * 2, a->cols * 2, CCV_ALL_DATA_TYPE | CCV_GET_CHANNEL(a->type), type, sig); ccv_matrix_return_if_cached(, db); int ch = CCV_GET_CHANNEL(a->type); int cols0 = a->cols - 1 - src_x; int y, x, sy = -1 + src_y, sx = src_x * ch, k; int* tab = (int*)alloca((a->cols + src_x + 2) * ch * sizeof(int)); for (x = 0; x < a->cols + src_x + 2; x++) for (k = 0; k < ch; k++) tab[x * ch + k] = ((x >= a->cols) ? a->cols * 2 - 1 - x : x) * ch + k; unsigned char* buf = (unsigned char*)alloca(3 * db->cols * ch * ccv_max(CCV_GET_DATA_TYPE_SIZE(db->type), sizeof(int))); int bufstep = db->cols * ch * ccv_max(CCV_GET_DATA_TYPE_SIZE(db->type), sizeof(int)); unsigned char* b_ptr = db->data.u8; /* why src_y * 2: the same argument as in ccv_sample_down */ #define for_block(_for_get_a, _for_set, _for_get, _for_set_b) \ for (y = 0; y < a->rows; y++) \ { \ for (; sy <= y + 1 + src_y; sy++) \ { \ unsigned char* row = buf + ((sy + src_y * 2 + 1) % 3) * bufstep; \ int _sy = (sy < 0) ? -1 - sy : (sy >= a->rows) ? a->rows * 2 - 1 - sy : sy; \ unsigned char* a_ptr = a->data.u8 + a->step * _sy; \ if (a->cols == 1) \ { \ for (k = 0; k < ch; k++) \ { \ _for_set(row, k, _for_get_a(a_ptr, k, 0) * (G025 + G075 + G125), 0); \ _for_set(row, k + ch, _for_get_a(a_ptr, k, 0) * (G025 + G075 + G125), 0); \ } \ continue; \ } \ if (sx == 0) \ { \ for (k = 0; k < ch; k++) \ { \ _for_set(row, k, _for_get_a(a_ptr, k + sx, 0) * (G025 + G075) + _for_get_a(a_ptr, k + sx + ch, 0) * G125, 0); \ _for_set(row, k + ch, _for_get_a(a_ptr, k + sx, 0) * (G125 + G025) + _for_get_a(a_ptr, k + sx + ch, 0) * G075, 0); \ } \ } \ /* some serious flaw in computing Gaussian weighting in previous version * specially, we are doing perfect upsampling (2x) so, it concerns a grid like: * XXYY * XXYY * in this case, to upsampling, the weight should be from distance 0.25 and 1.25, and 0.25 and 0.75 * previously, it was mistakingly be 0.0 1.0, 0.5 0.5 (imperfect upsampling (2x - 1)) */ \ for (x = (sx == 0) ? ch : 0; x < cols0 * ch; x += ch) \ { \ for (k = 0; k < ch; k++) \ { \ _for_set(row, x * 2 + k, _for_get_a(a_ptr, x + sx - ch + k, 0) * G075 + _for_get_a(a_ptr, x + sx + k, 0) * G025 + _for_get_a(a_ptr, x + sx + ch + k, 0) * G125, 0); \ _for_set(row, x * 2 + ch + k, _for_get_a(a_ptr, x + sx - ch + k, 0) * G125 + _for_get_a(a_ptr, x + sx + k, 0) * G025 + _for_get_a(a_ptr, x + sx + ch + k, 0) * G075, 0); \ } \ } \ x_block(_for_get_a, _for_set, _for_get, _for_set_b); \ } \
void ccv_sat(ccv_dense_matrix_t* a, ccv_dense_matrix_t** b, int type, int padding_pattern) { ccv_declare_derived_signature(sig, a->sig != 0, ccv_sign_with_format(20, "ccv_sat(%d)", padding_pattern), a->sig, CCV_EOF_SIGN); int safe_type = (a->type & CCV_8U) ? ((a->rows * a->cols >= 0x808080) ? CCV_64S : CCV_32S) : ((a->type & CCV_32S) ? CCV_64S : a->type); type = (type == 0) ? CCV_GET_DATA_TYPE(safe_type) | CCV_GET_CHANNEL(a->type) : CCV_GET_DATA_TYPE(type) | CCV_GET_CHANNEL(a->type); int ch = CCV_GET_CHANNEL(a->type); int i, j; unsigned char* a_ptr = a->data.u8; ccv_dense_matrix_t* db; unsigned char* b_ptr; switch (padding_pattern) { case CCV_NO_PADDING: db = *b = ccv_dense_matrix_renew(*b, a->rows, a->cols, CCV_ALL_DATA_TYPE | CCV_GET_CHANNEL(a->type), type, sig); ccv_object_return_if_cached(, db); b_ptr = db->data.u8; #define for_block(_for_set_b, _for_get_b, _for_get) \ for (j = 0; j < ch; j++) \ _for_set_b(b_ptr, j, _for_get(a_ptr, j, 0), 0); \ for (j = ch; j < a->cols * ch; j++) \ _for_set_b(b_ptr, j, _for_get_b(b_ptr, j - ch, 0) + _for_get(a_ptr, j, 0), 0); \ a_ptr += a->step; \ b_ptr += db->step; \ for (i = 1; i < a->rows; i++) \ { \ for (j = 0; j < ch; j++) \ _for_set_b(b_ptr, j, _for_get_b(b_ptr - db->step, j, 0) + _for_get(a_ptr, j, 0), 0); \ for (j = ch; j < a->cols * ch; j++) \ _for_set_b(b_ptr, j, _for_get_b(b_ptr, j - ch, 0) - _for_get_b(b_ptr - db->step, j - ch, 0) + _for_get_b(b_ptr - db->step, j, 0) + _for_get(a_ptr, j, 0), 0); \ a_ptr += a->step; \ b_ptr += db->step; \ } ccv_matrix_setter_getter(db->type, ccv_matrix_getter, a->type, for_block); #undef for_block break; case CCV_PADDING_ZERO: db = *b = ccv_dense_matrix_renew(*b, a->rows + 1, a->cols + 1, CCV_ALL_DATA_TYPE | CCV_GET_CHANNEL(a->type), type, sig); ccv_object_return_if_cached(, db); b_ptr = db->data.u8; #define for_block(_for_set_b, _for_get_b, _for_get) \ for (j = 0; j < db->cols * ch; j++) \ _for_set_b(b_ptr, j, 0, 0); \ b_ptr += db->step; \ for (i = 0; i < a->rows; i++) \ { \ for (j = 0; j < ch; j++) \ _for_set_b(b_ptr, j, 0, 0); \ for (j = ch; j < db->cols * ch; j++) \ _for_set_b(b_ptr, j, _for_get_b(b_ptr, j - ch, 0) - _for_get_b(b_ptr - db->step, j - ch, 0) + _for_get_b(b_ptr - db->step, j, 0) + _for_get(a_ptr, j - ch, 0), 0); \ a_ptr += a->step; \ b_ptr += db->step; \ } ccv_matrix_setter_getter(db->type, ccv_matrix_getter, a->type, for_block); #undef for_block break; } }
void ccv_contrast(ccv_dense_matrix_t* a, ccv_dense_matrix_t** b, int type, double ds) { ccv_declare_derived_signature(sig, a->sig != 0, ccv_sign_with_format(64, "ccv_contrast(%la)", ds), a->sig, CCV_EOF_SIGN); type = (type == 0) ? CCV_GET_DATA_TYPE(a->type) | CCV_GET_CHANNEL(a->type) : CCV_GET_DATA_TYPE(type) | CCV_GET_CHANNEL(a->type); ccv_dense_matrix_t* db = *b = ccv_dense_matrix_renew(*b, a->rows, a->cols, CCV_ALL_DATA_TYPE | CCV_GET_CHANNEL(a->type), type, sig); ccv_object_return_if_cached(, db); int i, j, k, ch = CCV_GET_CHANNEL(a->type); double* ms = (double*)malloc(sizeof(double) * ch); memset(ms, 0, sizeof(double) * ch); unsigned char* aptr = a->data.u8; #define for_block(_, _for_get) \ for (i = 0; i < a->rows; i++) \ { \ for (j = 0; j < a->cols; j++) \ for (k = 0; k < ch; k++) \ ms[k] += _for_get(aptr, j * ch + k, 0); \ aptr += a->step; \ } ccv_matrix_getter(a->type, for_block); #undef for_block for (i = 0; i < ch; i++) ms[i] = ms[i] / (a->rows * a->cols); aptr = a->data.u8; unsigned char* bptr = db->data.u8; if (CCV_GET_DATA_TYPE(a->type) == CCV_8U && CCV_GET_DATA_TYPE(db->type) == CCV_8U) // specialize for 8U type { unsigned char* us = (unsigned char*)malloc(sizeof(unsigned char) * ch * 256); for (i = 0; i < 256; i++) for (j = 0; j < ch; j++) us[i * ch + j] = ccv_clamp((i - ms[j]) * ds + ms[j], 0, 255); for (i = 0; i < a->rows; i++) { for (j = 0; j < a->cols; j++) for (k = 0; k < ch; k++) bptr[j * ch + k] = us[(aptr[j * ch + k]) * ch + k]; aptr += a->step; bptr += db->step; } free(us); } else { #define for_block(_for_get, _for_set) \ for (i = 0; i < a->rows; i++) \ { \ for (j = 0; j < a->cols; j++) \ for (k = 0; k < ch; k++) \ _for_set(bptr, j * ch + k, (_for_get(aptr, j * ch + k, 0) - ms[k]) * ds + ms[k], 0); \ aptr += a->step; \ bptr += db->step; \ } ccv_matrix_getter(a->type, ccv_matrix_setter, db->type, for_block); #undef for_block } free(ms); }
// this method is a merely baseline implementation and has no optimization effort ever put into it, if at all void ccv_perspective_transform(ccv_dense_matrix_t* a, ccv_dense_matrix_t** b, int type, float m00, float m01, float m02, float m10, float m11, float m12, float m20, float m21, float m22) { ccv_declare_derived_signature(sig, a->sig != 0, ccv_sign_with_format(64, "ccv_perspective_transform(%a,%a,%a,%a,%a,%a,%a,%a,%a)", m00, m01, m02, m10, m11, m12, m20, m21, m22), a->sig, CCV_EOF_SIGN); type = (type == 0) ? CCV_GET_DATA_TYPE(a->type) | CCV_GET_CHANNEL(a->type) : CCV_GET_DATA_TYPE(type) | CCV_GET_CHANNEL(a->type); ccv_dense_matrix_t* db = *b = ccv_dense_matrix_renew(*b, a->rows, a->cols, CCV_ALL_DATA_TYPE | CCV_GET_CHANNEL(a->type), type, sig); ccv_object_return_if_cached(, db); // with default of bilinear interpolation int i, j, k, ch = CCV_GET_CHANNEL(a->type); unsigned char* a_ptr = a->data.u8; unsigned char* b_ptr = db->data.u8; // assume field of view is 60, modify the matrix value to reflect that // (basically, apply x / ccv_max(a->rows, a->cols), y / ccv_max(a->rows, a->cols) before hand m00 *= 1.0 / ccv_max(a->rows, a->cols); m01 *= 1.0 / ccv_max(a->rows, a->cols); m02 *= 1.0 / ccv_max(a->rows, a->cols); m10 *= 1.0 / ccv_max(a->rows, a->cols); m11 *= 1.0 / ccv_max(a->rows, a->cols); m12 *= 1.0 / ccv_max(a->rows, a->cols); m20 *= 1.0 / (ccv_max(a->rows, a->cols) * ccv_max(a->rows, a->cols)); m21 *= 1.0 / (ccv_max(a->rows, a->cols) * ccv_max(a->rows, a->cols)); m22 *= 1.0 / ccv_max(a->rows, a->cols); #define for_block(_for_set, _for_get) \ for (i = 0; i < db->rows; i++) \ { \ float cy = i - db->rows * 0.5; \ float crx = cy * m01 + m02; \ float cry = cy * m11 + m12; \ float crz = cy * m21 + m22; \ for (j = 0; j < db->cols; j++) \ { \ float cx = j - db->cols * 0.5; \ float wz = 1.0 / (cx * m20 + crz); \ float wx = a->cols * 0.5 + (cx * m00 + crx) * wz; \ float wy = a->rows * 0.5 + (cx * m10 + cry) * wz; \ int iwx = (int)wx; \ int iwy = (int)wy; \ wx = wx - iwx; \ wy = wy - iwy; \ if (iwx >= 0 && iwx < a->cols - 1 && iwy >= 0 && iwy < a->rows - 1) \ for (k = 0; k < ch; k++) \ _for_set(b_ptr, j * ch + k, _for_get(a_ptr + iwy * a->step, iwx * ch + k, 0) * (1 - wx) * (1 - wy) + \ _for_get(a_ptr + iwy * a->step, iwx * ch + ch + k, 0) * wx * (1 - wy) + \ _for_get(a_ptr + iwy * a->step + a->step, iwx * ch + k, 0) * (1 - wx) * wy + \ _for_get(a_ptr + iwy * a->step + a->step, iwx * ch + ch + k, 0) * wx * wy, 0); \ else \ for (k = 0; k < ch; k++) \ _for_set(b_ptr, j * ch + k, 0, 0); \ } \ b_ptr += db->step; \ } ccv_matrix_setter(db->type, ccv_matrix_getter, a->type, for_block); #undef for_block }
ccv_dense_matrix_t ccv_dense_matrix(int rows, int cols, int type, void* data, uint64_t sig) { ccv_dense_matrix_t mat; mat.sig = sig; mat.type = (CCV_GET_CHANNEL(type) | CCV_GET_DATA_TYPE(type) | CCV_MATRIX_DENSE | CCV_UNMANAGED) & ~CCV_GARBAGE; mat.rows = rows; mat.cols = cols; mat.step = (cols * CCV_GET_DATA_TYPE_SIZE(type) * CCV_GET_CHANNEL(type) + 3) & -4; mat.refcount = 1; mat.data.u8 = (unsigned char*)data; return mat; }
static void _ccv_dense_vector_expand(ccv_sparse_matrix_t* mat, ccv_dense_vector_t* vector) { if (vector->prime == -1) return; vector->prime++; int new_length = CCV_GET_SPARSE_PRIME(vector->prime); int cell_width = CCV_GET_DATA_TYPE_SIZE(mat->type) * CCV_GET_CHANNEL(mat->type); int new_step = (new_length * cell_width + 3) & -4; ccv_matrix_cell_t new_data; new_data.u8 = (unsigned char*)ccmalloc(new_step + sizeof(int) * new_length); int* new_indice = (int*)(new_data.u8 + new_step); int i; for (i = 0; i < new_length; i++) new_indice[i] = -1; for (i = 0; i < vector->length; i++) if (vector->indice[i] != -1) { int index = vector->indice[i]; int h = (index * 33) % new_length, j = 0; while (new_indice[(h + j * j) % new_length] != index && new_indice[(h + j * j) % new_length] != -1) j++; j = (h + j * j) % new_length; new_indice[j] = index; memcpy(new_data.u8 + j * cell_width, vector->data.u8 + i * cell_width, cell_width); } vector->length = new_length; ccfree(vector->data.u8); vector->data = new_data; vector->indice = new_indice; }
double ccv_sum(ccv_matrix_t* mat, int flag) { ccv_dense_matrix_t* dmt = ccv_get_dense_matrix(mat); double sum = 0; unsigned char* m_ptr = dmt->data.u8; int i, j, ch = CCV_GET_CHANNEL(dmt->type); #define for_block(_, _for_get) \ switch (flag) \ { \ case CCV_UNSIGNED: \ for (i = 0; i < dmt->rows; i++) \ { \ for (j = 0; j < dmt->cols * ch; j++) \ sum += fabs((double)(_for_get(m_ptr, j, 0))); \ m_ptr += dmt->step; \ } \ break; \ case CCV_SIGNED: \ default: \ for (i = 0; i < dmt->rows; i++) \ { \ for (j = 0; j < dmt->cols * ch; j++) \ sum += _for_get(m_ptr, j, 0); \ m_ptr += dmt->step; \ } \ } ccv_matrix_getter(dmt->type, for_block); #undef for_block return sum; }
void ccv_flatten(ccv_matrix_t* a, ccv_matrix_t** b, int type, int flag) { ccv_dense_matrix_t* da = ccv_get_dense_matrix(a); ccv_declare_derived_signature(sig, da->sig != 0, ccv_sign_with_format(64, "ccv_flatten(%d)", flag), da->sig, CCV_EOF_SIGN); int no_8u_type = (da->type & CCV_8U) ? CCV_32S : da->type; type = (type == 0) ? CCV_GET_DATA_TYPE(no_8u_type) | CCV_C1 : CCV_GET_DATA_TYPE(type) | CCV_C1; ccv_dense_matrix_t* db = *b = ccv_dense_matrix_renew(*b, da->rows, da->cols, CCV_ALL_DATA_TYPE | CCV_C1, type, sig); ccv_object_return_if_cached(, db); int i, j, k, ch = CCV_GET_CHANNEL(da->type); unsigned char* aptr = da->data.u8; unsigned char* bptr = db->data.u8; #define for_block(_for_get, _for_type, _for_set) \ for (i = 0; i < da->rows; i++) \ { \ for (j = 0; j < da->cols; j++) \ { \ _for_type sum = 0; \ for (k = 0; k < ch; k++) \ sum += _for_get(aptr, j * ch + k, 0); \ _for_set(bptr, j, sum, 0); \ } \ aptr += da->step; \ bptr += db->step; \ } ccv_matrix_getter(da->type, ccv_matrix_typeof_setter, db->type, for_block); #undef for_block }
double ccv_normalize(ccv_matrix_t* a, ccv_matrix_t** b, int btype, int flag) { ccv_dense_matrix_t* da = ccv_get_dense_matrix(a); assert(CCV_GET_CHANNEL(da->type) == CCV_C1); ccv_declare_derived_signature(sig, da->sig != 0, ccv_sign_with_format(20, "ccv_normalize(%d)", flag), da->sig, CCV_EOF_SIGN); btype = (btype == 0) ? CCV_GET_DATA_TYPE(da->type) | CCV_C1 : CCV_GET_DATA_TYPE(btype) | CCV_C1; ccv_dense_matrix_t* db = *b = ccv_dense_matrix_renew(*b, da->rows, da->cols, CCV_ALL_DATA_TYPE | CCV_C1, btype, sig); assert(db); ccv_object_return_if_cached(db->tag.f64, db); double sum = 0, inv; int i, j; unsigned char* a_ptr = da->data.u8; unsigned char* b_ptr = db->data.u8; switch (flag) { case CCV_L1_NORM: #define for_block(_for_set, _for_get) \ for (i = 0; i < da->rows; i++) \ { \ for (j = 0; j < da->cols; j++) \ sum += _for_get(a_ptr, j, 0); \ a_ptr += da->step; \ } \ inv = 1.0 / sum; \ a_ptr = da->data.u8; \ for (i = 0; i < da->rows; i++) \ { \ for (j = 0; j < da->cols; j++) \ _for_set(b_ptr, j, _for_get(a_ptr, j, 0) * inv, 0); \ a_ptr += da->step; \ b_ptr += db->step; \ } ccv_matrix_setter(db->type, ccv_matrix_getter, da->type, for_block); #undef for_block break; case CCV_L2_NORM: #define for_block(_for_set, _for_get) \ for (i = 0; i < da->rows; i++) \ { \ for (j = 0; j < da->cols; j++) \ sum += _for_get(a_ptr, j, 0) * _for_get(a_ptr, j, 0); \ a_ptr += da->step; \ } \ sum = sqrt(sum); \ inv = 1.0 / sum; \ a_ptr = da->data.u8; \ for (i = 0; i < da->rows; i++) \ { \ for (j = 0; j < da->cols; j++) \ _for_set(b_ptr, j, _for_get(a_ptr, j, 0) * inv, 0); \ a_ptr += da->step; \ b_ptr += db->step; \ } ccv_matrix_setter(db->type, ccv_matrix_getter, da->type, for_block); #undef for_block break; } return db->tag.f64 = sum; }
ccv_dense_matrix_t ccv_dense_matrix(int rows, int cols, int type, void* data, uint64_t sig) { ccv_dense_matrix_t mat; mat.sig = sig; mat.type = (CCV_GET_CHANNEL(type) | CCV_GET_DATA_TYPE(type) | CCV_MATRIX_DENSE | CCV_NO_DATA_ALLOC | CCV_UNMANAGED) & ~CCV_GARBAGE; mat.rows = rows; mat.cols = cols; mat.step = CCV_GET_STEP(cols, type); mat.refcount = 1; #if CCV_NNC_TENSOR_TFB mat.resides = CCV_TENSOR_CPU_MEMORY; mat.format = CCV_TENSOR_FORMAT_NHWC | CCV_GET_DATA_TYPE(type); mat.channels = CCV_GET_CHANNEL(type); mat.reserved = 0; #endif mat.data.u8 = (unsigned char*)data; return mat; }
static void _ccv_resample_cubic_integer_only(ccv_dense_matrix_t* a, ccv_dense_matrix_t* b) { assert(CCV_GET_DATA_TYPE(b->type) == CCV_8U || CCV_GET_DATA_TYPE(b->type) == CCV_32S || CCV_GET_DATA_TYPE(b->type) == CCV_64S); int i, j, k, ch = CCV_GET_CHANNEL(a->type); int no_8u_type = (b->type & CCV_8U) ? CCV_32S : b->type; assert(b->cols > 0); ccv_cubic_integer_coeffs_t* xofs = (ccv_cubic_integer_coeffs_t*)alloca(sizeof(ccv_cubic_integer_coeffs_t) * b->cols); float scale_x = (float)a->cols / b->cols; for (i = 0; i < b->cols; i++) { float sx = (i + 0.5) * scale_x - 0.5; _ccv_init_cubic_integer_coeffs((int)sx, a->cols, sx, xofs + i); } float scale_y = (float)a->rows / b->rows; int bufstep = b->cols * ch * CCV_GET_DATA_TYPE_SIZE(no_8u_type); unsigned char* buf = (unsigned char*)alloca(bufstep * 4); #ifdef __clang_analyzer__ memset(buf, 0, bufstep * 4); #endif unsigned char* a_ptr = a->data.u8; unsigned char* b_ptr = b->data.u8; int psi = -1, siy = 0; #define for_block(_for_get_a, _for_set, _for_get, _for_set_b) \ for (i = 0; i < b->rows; i++) \ { \ ccv_cubic_integer_coeffs_t yofs; \ float sy = (i + 0.5) * scale_y - 0.5; \ _ccv_init_cubic_integer_coeffs((int)sy, a->rows, sy, &yofs); \ if (yofs.si[3] > psi) \ { \ for (; siy <= yofs.si[3]; siy++) \ { \ unsigned char* row = buf + (siy & 0x3) * bufstep; \ for (j = 0; j < b->cols; j++) \ for (k = 0; k < ch; k++) \ _for_set(row, j * ch + k, _for_get_a(a_ptr, xofs[j].si[0] * ch + k, 0) * xofs[j].coeffs[0] + \ _for_get_a(a_ptr, xofs[j].si[1] * ch + k, 0) * xofs[j].coeffs[1] + \ _for_get_a(a_ptr, xofs[j].si[2] * ch + k, 0) * xofs[j].coeffs[2] + \ _for_get_a(a_ptr, xofs[j].si[3] * ch + k, 0) * xofs[j].coeffs[3], 0); \ a_ptr += a->step; \ } \ psi = yofs.si[3]; \ } \ unsigned char* row[4] = { \ buf + (yofs.si[0] & 0x3) * bufstep, \ buf + (yofs.si[1] & 0x3) * bufstep, \ buf + (yofs.si[2] & 0x3) * bufstep, \ buf + (yofs.si[3] & 0x3) * bufstep, \ }; \ for (j = 0; j < b->cols * ch; j++) \ _for_set_b(b_ptr, j, ccv_descale(_for_get(row[0], j, 0) * yofs.coeffs[0] + _for_get(row[1], j, 0) * yofs.coeffs[1] + \ _for_get(row[2], j, 0) * yofs.coeffs[2] + _for_get(row[3], j, 0) * yofs.coeffs[3], 12), 0); \ b_ptr += b->step; \ } ccv_matrix_getter(a->type, ccv_matrix_setter_getter_integer_only, no_8u_type, ccv_matrix_setter_integer_only, b->type, for_block); #undef for_block }
ccv_dense_matrix_t* ccv_dense_matrix_new(int rows, int cols, int type, void* data, uint64_t sig) { ccv_dense_matrix_t* mat; if (ccv_cache_opt && sig != 0 && !data && !(type & CCV_NO_DATA_ALLOC)) { uint8_t type; mat = (ccv_dense_matrix_t*)ccv_cache_out(&ccv_cache, sig, &type); if (mat) { assert(type == 0); mat->type |= CCV_GARBAGE; // set the flag so the upper level function knows this is from recycle-bin mat->refcount = 1; return mat; } } if (type & CCV_NO_DATA_ALLOC) { mat = (ccv_dense_matrix_t*)ccmalloc(sizeof(ccv_dense_matrix_t)); mat->type = (CCV_GET_CHANNEL(type) | CCV_GET_DATA_TYPE(type) | CCV_MATRIX_DENSE | CCV_NO_DATA_ALLOC) & ~CCV_GARBAGE; mat->data.u8 = data; } else { const size_t hdr_size = (sizeof(ccv_dense_matrix_t) + 15) & -16; mat = (ccv_dense_matrix_t*)(data ? data : ccmalloc(ccv_compute_dense_matrix_size(rows, cols, type))); mat->type = (CCV_GET_CHANNEL(type) | CCV_GET_DATA_TYPE(type) | CCV_MATRIX_DENSE) & ~CCV_GARBAGE; mat->type |= data ? CCV_UNMANAGED : CCV_REUSABLE; // it still could be reusable because the signature could be derived one. mat->data.u8 = (unsigned char*)mat + hdr_size; } mat->sig = sig; #if CCV_NNC_TENSOR_TFB mat->resides = CCV_TENSOR_CPU_MEMORY; mat->format = CCV_TENSOR_FORMAT_NHWC; mat->datatype = CCV_GET_DATA_TYPE(type); mat->channels = CCV_GET_CHANNEL(type); mat->reserved = 0; #endif mat->rows = rows; mat->cols = cols; mat->step = CCV_GET_STEP(cols, type); mat->refcount = 1; return mat; }
void ccv_shift(ccv_matrix_t* a, ccv_matrix_t** b, int type, int lr, int rr) { ccv_dense_matrix_t* da = ccv_get_dense_matrix(a); ccv_declare_derived_signature(sig, da->sig != 0, ccv_sign_with_format(64, "ccv_shift(%d,%d)", lr, rr), da->sig, CCV_EOF_SIGN); type = (type == 0) ? CCV_GET_DATA_TYPE(da->type) | CCV_GET_CHANNEL(da->type) : CCV_GET_DATA_TYPE(type) | CCV_GET_CHANNEL(da->type); ccv_dense_matrix_t* db = *b = ccv_dense_matrix_renew(*b, da->rows, da->cols, CCV_ALL_DATA_TYPE | CCV_GET_CHANNEL(da->type), type, sig); ccv_object_return_if_cached(, db); int i, j, ch = CCV_GET_CHANNEL(da->type); unsigned char* aptr = da->data.u8; unsigned char* bptr = db->data.u8; #define for_block(_for_get, _for_set) \ for (i = 0; i < da->rows; i++) \ { \ for (j = 0; j < da->cols * ch; j++) \ { \ _for_set(bptr, j, _for_get(aptr, j, lr), rr); \ } \ aptr += da->step; \ bptr += db->step; \ } ccv_matrix_getter(da->type, ccv_matrix_setter, db->type, for_block); #undef for_block }
ccv_dense_matrix_t* ccv_dense_matrix_renew(ccv_dense_matrix_t* x, int rows, int cols, int types, int prefer_type, uint64_t sig) { if (x != 0) { assert(x->rows == rows && x->cols == cols && (CCV_GET_DATA_TYPE(x->type) & types) && (CCV_GET_CHANNEL(x->type) == CCV_GET_CHANNEL(types))); prefer_type = CCV_GET_DATA_TYPE(x->type) | CCV_GET_CHANNEL(x->type); } if (sig != 0) sig = ccv_cache_generate_signature((const char*)&prefer_type, sizeof(int), sig, CCV_EOF_SIGN); if (x == 0) { x = ccv_dense_matrix_new(rows, cols, prefer_type, 0, sig); } else { x->sig = sig; } return x; }
void ccv_gradient(ccv_dense_matrix_t* a, ccv_dense_matrix_t** theta, int ttype, ccv_dense_matrix_t** m, int mtype, int dx, int dy) { ccv_declare_derived_signature(tsig, a->sig != 0, ccv_sign_with_format(64, "ccv_gradient(theta,%d,%d)", dx, dy), a->sig, CCV_EOF_SIGN); ccv_declare_derived_signature(msig, a->sig != 0, ccv_sign_with_format(64, "ccv_gradient(m,%d,%d)", dx, dy), a->sig, CCV_EOF_SIGN); int ch = CCV_GET_CHANNEL(a->type); ccv_dense_matrix_t* dtheta = *theta = ccv_dense_matrix_renew(*theta, a->rows, a->cols, CCV_32F | ch, CCV_32F | ch, tsig); ccv_dense_matrix_t* dm = *m = ccv_dense_matrix_renew(*m, a->rows, a->cols, CCV_32F | ch, CCV_32F | ch, msig); ccv_object_return_if_cached(, dtheta, dm); ccv_revive_object_if_cached(dtheta, dm); ccv_dense_matrix_t* tx = 0; ccv_dense_matrix_t* ty = 0; ccv_sobel(a, &tx, CCV_32F | ch, dx, 0); ccv_sobel(a, &ty, CCV_32F | ch, 0, dy); _ccv_atan2(tx->data.f32, ty->data.f32, dtheta->data.f32, dm->data.f32, ch * a->rows * a->cols); ccv_matrix_free(tx); ccv_matrix_free(ty); }
void _ccv_flip_x_self(ccv_dense_matrix_t* a) { int i, j; int len = CCV_GET_DATA_TYPE_SIZE(a->type) * CCV_GET_CHANNEL(a->type); unsigned char* buffer = (unsigned char*)alloca(len); unsigned char* a_ptr = a->data.u8; for (i = 0; i < a->rows; i++) { for (j = 0; j < a->cols / 2; j++) { memcpy(buffer, a_ptr + j * len, len); memcpy(a_ptr + j * len, a_ptr + (a->cols - 1 - j) * len, len); memcpy(a_ptr + (a->cols - 1 - j) * len, buffer, len); } a_ptr += a->step; } }
void ccv_close_outline(ccv_dense_matrix_t* a, ccv_dense_matrix_t** b, int type) { assert((CCV_GET_CHANNEL(a->type) == CCV_C1) && ((a->type & CCV_8U) || (a->type & CCV_32S) || (a->type & CCV_64S))); ccv_declare_derived_signature(sig, a->sig != 0, ccv_sign_with_literal("ccv_close_outline"), a->sig, CCV_EOF_SIGN); type = ((type == 0) || (type & CCV_32F) || (type & CCV_64F)) ? CCV_GET_DATA_TYPE(a->type) | CCV_C1 : CCV_GET_DATA_TYPE(type) | CCV_C1; ccv_dense_matrix_t* db = *b = ccv_dense_matrix_renew(*b, a->rows, a->cols, CCV_C1 | CCV_ALL_DATA_TYPE, type, sig); ccv_object_return_if_cached(, db); int i, j; unsigned char* a_ptr = a->data.u8; unsigned char* b_ptr = db->data.u8; ccv_zero(db); #define for_block(_for_get, _for_set_b, _for_get_b) \ for (i = 0; i < a->rows - 1; i++) \ { \ for (j = 0; j < a->cols - 1; j++) \ { \ if (!_for_get_b(b_ptr, j, 0)) \ _for_set_b(b_ptr, j, _for_get(a_ptr, j, 0), 0); \ if (_for_get(a_ptr, j, 0) && _for_get(a_ptr + a->step, j + 1, 0)) \ { \ _for_set_b(b_ptr + a->step, j, 1, 0); \ _for_set_b(b_ptr, j + 1, 1, 0); \ } \ if (_for_get(a_ptr + a->step, j, 0) && _for_get(a_ptr, j + 1, 0)) \ { \ _for_set_b(b_ptr, j, 1, 0); \ _for_set_b(b_ptr + a->step, j + 1, 1, 0); \ } \ } \ if (!_for_get_b(b_ptr, a->cols - 1, 0)) \ _for_set_b(b_ptr, a->cols - 1, _for_get(a_ptr, a->cols - 1, 0), 0); \ a_ptr += a->step; \ b_ptr += db->step; \ } \ for (j = 0; j < a->cols; j++) \ { \ if (!_for_get_b(b_ptr, j, 0)) \ _for_set_b(b_ptr, j, _for_get(a_ptr, j, 0), 0); \ } ccv_matrix_getter_integer_only(a->type, ccv_matrix_setter_getter_integer_only, db->type, for_block); #undef for_block }
void ccv_color_transform(ccv_dense_matrix_t* a, ccv_dense_matrix_t** b, int type, int flag) { ccv_declare_derived_signature(sig, a->sig != 0, ccv_sign_with_format(64, "ccv_color_transform(%d)", flag), a->sig, CCV_EOF_SIGN); assert(flag == CCV_RGB_TO_YUV); switch (flag) { case CCV_RGB_TO_YUV: assert(CCV_GET_CHANNEL(a->type) == CCV_C3); type = (type == 0) ? CCV_GET_DATA_TYPE(a->type) | CCV_C3 : CCV_GET_DATA_TYPE(type) | CCV_C3; break; } ccv_dense_matrix_t* db = *b = ccv_dense_matrix_renew(*b, a->rows, a->cols, CCV_ALL_DATA_TYPE | CCV_C3, type, sig); ccv_object_return_if_cached(, db); switch (flag) { case CCV_RGB_TO_YUV: _ccv_rgb_to_yuv(a, db); break; } }
int ccv_any_nan(ccv_matrix_t *a) { ccv_dense_matrix_t* da = ccv_get_dense_matrix(a); assert((da->type & CCV_32F) || (da->type & CCV_64F)); int ch = CCV_GET_CHANNEL(da->type); int i; if (da->type & CCV_32F) { for (i = 0; i < da->rows * da->cols * ch; i++) #ifdef isnanf if (isnanf(da->data.f32[i])) #else if (isnan(da->data.f32[i])) #endif return i + 1; } else { for (i = 0; i < da->rows * da->cols * ch; i++) if (isnan(da->data.f64[i])) return i + 1; } return 0; }
double ccv_variance(ccv_matrix_t* mat) { ccv_dense_matrix_t* dmt = ccv_get_dense_matrix(mat); double mean = 0, variance = 0; unsigned char* m_ptr = dmt->data.u8; int i, j, ch = CCV_GET_CHANNEL(dmt->type); #define for_block(_, _for_get) \ for (i = 0; i < dmt->rows; i++) \ { \ for (j = 0; j < dmt->cols * ch; j++) \ { \ mean += _for_get(m_ptr, j, 0); \ variance += _for_get(m_ptr, j, 0) * _for_get(m_ptr, j, 0); \ } \ m_ptr += dmt->step; \ } ccv_matrix_getter(dmt->type, for_block); #undef for_block mean = mean / (dmt->rows * dmt->cols * ch); variance = variance / (dmt->rows * dmt->cols * ch); return variance - mean * mean; }
void ccv_visualize(ccv_matrix_t* a, ccv_dense_matrix_t** b, int type) { ccv_dense_matrix_t* da = ccv_get_dense_matrix(a); ccv_declare_derived_signature(sig, da->sig != 0, ccv_sign_with_literal("ccv_visualize"), da->sig, CCV_EOF_SIGN); ccv_dense_matrix_t* db = *b = ccv_dense_matrix_renew(*b, da->rows, da->cols, CCV_8U | CCV_C1, CCV_8U | CCV_C1, sig); ccv_object_return_if_cached(, db); ccv_dense_matrix_t* dc = 0; if (CCV_GET_CHANNEL(da->type) > CCV_C1) { ccv_flatten(da, (ccv_matrix_t**)&dc, 0, 0); da = dc; } int i, j; double minval = DBL_MAX, maxval = -DBL_MAX; unsigned char* aptr = da->data.u8; unsigned char* bptr = db->data.u8; #define for_block(_, _for_get) \ for (i = 0; i < da->rows; i++) \ { \ for (j = 0; j < da->cols; j++) \ { \ minval = ccv_min(minval, _for_get(aptr, j, 0)); \ maxval = ccv_max(maxval, _for_get(aptr, j, 0)); \ } \ aptr += da->step; \ } \ aptr = da->data.u8; \ for (i = 0; i < da->rows; i++) \ { \ for (j = 0; j < da->cols; j++) \ bptr[j] = ccv_clamp((_for_get(aptr, j, 0) - minval) * 255.0 / (maxval - minval), 0, 255); \ aptr += da->step; \ bptr += db->step; \ } ccv_matrix_getter(da->type, for_block); #undef for_block if (dc != 0) ccv_matrix_free(dc); }