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#define IDX(i,j,ld) (((i)*(ld))+(j)) __constant__ real wx[wx_size]; __constant__ real wy[wy_size]; __global__ void edgetaper(real *im, const int hsfx, const int hsfy) { const int i = blockIdx.y*blockDim.y + threadIdx.y; const int j = blockIdx.x*blockDim.x + threadIdx.x; if (i > ROWS-1 || j > COLS-1) return; real value; if (i<hsfy || i>ROWS-1-hsfy || j<hsfx || j>COLS-1-hsfx) value = im[IDX(i,j,COLS)]; else { return; } if (i<hsfy) value *= wy; else if (i>ROWS-1-hsfy) value *= wy[ROWS-1-i]; if (j<hsfx) value *= wx[j]; else if (j>COLS-1-hsfx) value *= wx[COLS-1-j]; im[IDX(i,j,COLS)] = value; } ÊǹØÓÚͼÏñÄ£ºýµÄ£¬Ïë°ÑÕâ¶Î´úÂëת³ÉC³ÌÐò£¬µ«ÊÇ¿àÓÚ¿´²»¶®£¬Çë´óÉñ°ï棬лл£¡£¡£¡ |
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