Mercurial > hg > wm
view Meerwald/cmp_pgm.c @ 0:be303a3f5ea8
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author | Peter Meerwald <pmeerw@cosy.sbg.ac.at> |
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date | Sun, 12 Aug 2007 13:14:34 +0200 |
parents | |
children | acb6967ee76d |
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#include "wm.h" #include "pgm.h" char *progname; void usage(void) { fprintf(stderr, "usage: %s [-C] [-h] [-m n] [-o file] [-pP] [-r file] -i file file\n\n", progname); fprintf(stderr, "\t-C\t\tprint PSNR value only\n"); fprintf(stderr, "\t-h\t\tprint usage\n"); fprintf(stderr, "\t-i file\t\toriginal image file\n"); fprintf(stderr, "\t-m n\t\tmultiplication factor (default auto)\n"); fprintf(stderr, "\t-o file\t\toutput file for difference image\n"); fprintf(stderr, "\t-p\t\tprint PSNR, RMS and MSE\n"); fprintf(stderr, "\t-P\t\tonly print PSNR, RMS and MSE, no difference image\n"); fprintf(stderr, "\t-r file\t\tROI (region-of-interest) mask (default none)\n"); exit(0); } int main(int argc, char *argv[]) { FILE *in = stdin; FILE *out = stdout; FILE *orig = NULL; FILE *roi = NULL; gray **input_image; gray **orig_image; gray **roi_image; char output_name[MAXPATHLEN] = "(stdout)"; char input_name[MAXPATHLEN] = "(stdin)"; char orig_name[MAXPATHLEN]; char roi_name[MAXPATHLEN]; int in_cols, in_rows, in_format; gray in_maxval; int roi_cols, roi_rows, roi_format; gray roi_maxval; int orig_cols, orig_rows, orig_format; gray orig_maxval; int cols, rows, format; gray maxval; int col, row; int roisize = 0; int i; int c; int m = 0; int min, max; int print_psnr = 0; int print_psnr_only = 0; int print_psnr_value_only = 0; double error = 0.0; progname = argv[0]; pgm_init(&argc, argv); wm_init(); while ((c = getopt(argc, argv, "h?i:m:o:r:pPC")) != EOF) { switch (c) { case 'h': case '?': usage(); break; case 'i': if ((orig = fopen(optarg, "rb")) == NULL) { fprintf(stderr, "%s: unable to open original image file %s\n", progname, optarg); exit(1); } strcpy(orig_name, optarg); break; case 'r': if ((roi = fopen(optarg, "rb")) == NULL) { fprintf(stderr, "%s: unable to open ROI image file %s\n", progname, optarg); exit(1); } strcpy(roi_name, optarg); break; case 'm': m = atoi(optarg); if (m <= 0) { fprintf(stderr, "%s: multiplication factor %d out of range\n", progname, m); exit(1); } break; case 'o': if ((out = fopen(optarg, "wb")) == NULL) { fprintf(stderr, "%s: unable to open output file %s\n", progname, optarg); exit(1); } strcpy(output_name, optarg); break; case 'p': print_psnr = 1; break; case 'P': print_psnr_only = 1; break; case 'C': print_psnr_value_only = 1; print_psnr_only = 1; break; } } argc -= optind; argv += optind; if (argc > 1) { usage(); exit(1); } if (argc == 1 && *argv[0] != '-') if ((in = fopen(argv[0], "rb")) == NULL) { fprintf(stderr, "%s: unable to open input file %s\n", progname, argv[0]); exit(1); } else strcpy(input_name, argv[0]); if (!orig) { fprintf(stderr, "%s: original image file not specified, use -i file option\n", progname); exit(1); } pgm_readpgminit(in, &in_cols, &in_rows, &in_maxval, &in_format); if (orig) { pgm_readpgminit(orig, &orig_cols, &orig_rows, &orig_maxval, &orig_format); if (in_cols != orig_cols || in_rows != orig_rows) { fprintf(stderr, "%s: input image %s does not match dimensions of original image %s\n", progname, input_name, orig_name); exit(1); } } if (roi) { pgm_readpgminit(roi, &roi_cols, &roi_rows, &roi_maxval, &roi_format); if (in_cols != roi_cols || in_rows != roi_rows) { fprintf(stderr, "%s: input image %s does not match dimensions of ROI image %s\n", progname, input_name, roi_name); exit(1); } } cols = in_cols; rows = in_rows; format = in_format; maxval = in_maxval; input_image = pgm_allocarray(cols, rows); orig_image = pgm_allocarray(cols, rows); roi_image = pgm_allocarray(cols, rows); for (row = 0; row < rows; row++) { pgm_readpgmrow(in, input_image[row], cols, in_maxval, in_format); if (orig) pgm_readpgmrow(orig, orig_image[row], cols, orig_maxval, orig_format); else memset(orig_image[row], cols, 0); if (roi) pgm_readpgmrow(roi, roi_image[row], cols, roi_maxval, roi_format); else memset(roi_image[row], cols, PGM_MAXMAXVAL); } fclose(in); if (orig) fclose(orig); if (roi) fclose(roi); max = 0; min = PGM_MAXMAXVAL; for (row = 0; row < rows; row++) { gray *pi = input_image[row]; gray *po = orig_image[row]; gray *pr = roi_image[row]; for (col = 0; col < cols; col++) { int diff = abs(*pi - *po); int inroi = (!roi || *pr > 0); pi++; po++; pr++; if (roi && !inroi) continue; roisize++; error += sqr(diff); if (diff < min) min = diff; if (diff > max) max = diff; } } for (row = 0; row < rows; row++) { gray *pi = input_image[row]; gray *po = orig_image[row]; gray *pr = roi_image[row]; for (col = 0; col < cols; col++) { int diff = abs(*pi - *po); int inroi = (!roi || *pr > 0); if (!inroi) { *pi = 0; } else { if (m > 0) *pi = PIXELRANGE(diff * m); else *pi = PIXELRANGE((double) (diff - min) / (double) (max - min) * maxval); } pi++; po++; pr++; } } if (!print_psnr_only) { pgm_writepgminit(out, cols, rows, maxval, 0); for (row = 0; row < rows; row++) pgm_writepgmrow(out, input_image[row], cols, maxval, 0); fclose(out); } pgm_freearray(input_image, rows); pgm_freearray(orig_image, rows); pgm_freearray(roi_image, rows); if (print_psnr || print_psnr_only) { double mse = (roisize) ? error / (double) roisize : 0; double rmse = sqrt(mse); double psnr = (rmse) ? 20.0 * log(255.0 / rmse) / log(10.0) : 0; FILE *print = print_psnr_only ? out : stderr; if (!print_psnr_value_only) { if (roi) fprintf(print, "ROI size: %d\n", roisize); if (mse > 0.0) fprintf(print, "PSNR: %lf dB\n", psnr); else fprintf(print, "PSNR: inf\n"); fprintf(print, "RMSE: %lf\n", rmse); fprintf(print, "MSE: %lf\n", mse); fprintf(print, "dmin, dmax: %d, %d\n", min, max); } else fprintf(print, "%lf\n", mse > 0.0 ? psnr : 100.0); } exit(0); }