int main(int argc, char **argv) { struct cmdlineInfo cmdline; FILE * ifP; tuplen ** tuplenarray; struct pam inpam; double sharpness; pnm_init(&argc, argv); parseCommandLine(argc, argv, &cmdline); ifP = pm_openr(cmdline.inputFilespec); tuplenarray = pnm_readpamn(ifP, &inpam, PAM_STRUCT_SIZE(tuple_type)); if (inpam.height < 3 || inpam.width < 3) pm_error("sharpness is undefined for an image less than 3 pixels " "in all directions. This image is %d x %d", inpam.width, inpam.height); computeSharpness(&inpam, tuplenarray, &sharpness); printf("Sharpness = %f\n", sharpness); pnm_freepamarrayn(tuplenarray, &inpam); pm_close(ifP); return 0; }
int main(int argc, char **argv ) { struct cmdlineInfo cmdline; FILE* ifP; struct pam pam; pfmSample * pfmRowBuffer; unsigned int pfmSamplesPerRow; unsigned int pfmRow; tuplen ** tuplenArray; pnm_init(&argc, argv); machineEndianness = thisMachineEndianness(); parseCommandLine(argc, argv, &cmdline); ifP = pm_openr(cmdline.inputFilespec); tuplenArray = pnm_readpamn(ifP, &pam, PAM_STRUCT_SIZE(tuple_type)); writePfmHeader(stdout, makePfmHeader(&pam, cmdline.scale, cmdline.endian)); pfmSamplesPerRow = pam.width * pam.depth; MALLOCARRAY_NOFAIL(pfmRowBuffer, pfmSamplesPerRow); /* PFMs are upside down like BMPs */ for (pfmRow = 0; pfmRow < pam.height; ++pfmRow) writePfmRow(&pam, stdout, pfmRow, pfmSamplesPerRow, tuplenArray, cmdline.endian, cmdline.scale, pfmRowBuffer); pnm_freepamarrayn(tuplenArray, &pam); free(pfmRowBuffer); pm_close(stdout); pm_close(pam.file); return 0; }
int main(int argc, char **argv) { struct cmdlineInfo cmdline; FILE * ifP; tuplen ** tuplenarray; struct pam inpam; struct pam mappam; tuple ** map; int row; float * sharpness; pnm_init(&argc, argv); parseCommandLine(argc, argv, &cmdline); ifP = pm_openr(cmdline.inputFilespec); tuplenarray = pnm_readpamn(ifP, &inpam, sizeof(inpam)); mappam = inpam; mappam.file = stdout; mappam.maxval = 255; MALLOCARRAY_NOFAIL(sharpness, inpam.depth); map = pnm_allocpamarray(&mappam); makeBlackRown(&inpam, tuplenarray[0]); for (row = 1; row < inpam.height-1; ++row) { int col; makeBlackTuplen(&inpam, tuplenarray[row][0]); for (col = 1; col < inpam.width-1; ++col) { int dy; unsigned int plane; for (plane = 0; plane < inpam.depth; ++plane) sharpness[plane] = 0.0; for (dy = -1; dy <= 1; ++dy) { int dx; for (dx = -1; dx <= 1; ++dx) { if (dx != 0 || dy != 0) { unsigned int plane; for (plane = 0; plane < inpam.depth; ++plane) { samplen const sampleval = tuplenarray[row][col][plane]; samplen const sampleval2 = tuplenarray[row+dy][col+dx][plane]; sharpness[plane] += fabs(sampleval - sampleval2); } } } } makeSharpnessPixel(&mappam, sharpness, map[row][col]); } makeBlackTuplen(&inpam, tuplenarray[row][inpam.width-1]); } makeBlackRown(&inpam, tuplenarray[inpam.height-1]); free(sharpness); pnm_writepam(&mappam, map); pnm_freepamarray(map, &mappam); pnm_freepamarrayn(tuplenarray, &inpam); return 0; }