Mercurial > hg > wm
annotate Meerwald-dir/cmp_pgm.c @ 25:5a57a145bccb default tip
Added tag v0.7 for changeset 9f20bce6184e
| author | Peter Meerwald-Stadler <pmeerw@pmeerw.net> |
|---|---|
| date | Fri, 20 Dec 2024 13:32:15 +0100 |
| parents | 9f20bce6184e |
| children |
| rev | line source |
|---|---|
| 0 | 1 #include "wm.h" |
|
24
9f20bce6184e
move directories, support netpbm 11
Peter Meerwald-Stadler <pmeerw@pmeerw.net>
parents:
20
diff
changeset
|
2 #include "netpbm/pgm.h" |
| 0 | 3 |
| 4 char *progname; | |
| 5 | |
| 6 void usage(void) { | |
| 3 | 7 fprintf(stderr, "usage: %s [-C] [-h] [-m n] [-o file] [-pP] -i file file\n\n", progname); |
| 0 | 8 fprintf(stderr, "\t-C\t\tprint PSNR value only\n"); |
| 9 fprintf(stderr, "\t-h\t\tprint usage\n"); | |
| 10 fprintf(stderr, "\t-i file\t\toriginal image file\n"); | |
| 11 fprintf(stderr, "\t-m n\t\tmultiplication factor (default auto)\n"); | |
| 12 fprintf(stderr, "\t-o file\t\toutput file for difference image\n"); | |
| 13 fprintf(stderr, "\t-p\t\tprint PSNR, RMS and MSE\n"); | |
| 14 fprintf(stderr, "\t-P\t\tonly print PSNR, RMS and MSE, no difference image\n"); | |
| 15 exit(0); | |
| 16 } | |
| 17 | |
| 18 int main(int argc, char *argv[]) { | |
| 19 | |
| 20 FILE *in = stdin; | |
| 21 FILE *out = stdout; | |
| 22 FILE *orig = NULL; | |
| 23 | |
| 24 gray **input_image; | |
| 25 gray **orig_image; | |
| 26 | |
| 27 char output_name[MAXPATHLEN] = "(stdout)"; | |
| 28 char input_name[MAXPATHLEN] = "(stdin)"; | |
| 29 char orig_name[MAXPATHLEN]; | |
| 30 | |
| 31 int in_cols, in_rows, in_format; | |
| 32 gray in_maxval; | |
| 33 int orig_cols, orig_rows, orig_format; | |
| 34 gray orig_maxval; | |
|
20
bd669312f068
suppress warnings, fix link errors
Peter Meerwald-Stadler <pmeerw@pmeerw.net>
parents:
8
diff
changeset
|
35 int cols, rows; |
| 0 | 36 gray maxval; |
| 37 int col, row; | |
| 38 | |
| 39 int c; | |
| 40 | |
| 41 int m = 0; | |
| 42 int min, max; | |
| 43 | |
| 44 int print_psnr = 0; | |
| 45 int print_psnr_only = 0; | |
| 46 int print_psnr_value_only = 0; | |
| 47 double error = 0.0; | |
| 48 | |
| 49 progname = argv[0]; | |
| 50 | |
| 51 pgm_init(&argc, argv); wm_init(); | |
| 52 | |
| 3 | 53 while ((c = getopt(argc, argv, "h?i:m:o:pPC")) != EOF) { |
| 0 | 54 switch (c) { |
| 55 case 'h': | |
| 56 case '?': | |
| 57 usage(); | |
| 58 break; | |
| 59 case 'i': | |
| 60 if ((orig = fopen(optarg, "rb")) == NULL) { | |
| 61 fprintf(stderr, "%s: unable to open original image file %s\n", progname, optarg); | |
| 62 exit(1); | |
| 63 } | |
| 64 strcpy(orig_name, optarg); | |
| 65 break; | |
| 66 case 'm': | |
| 67 m = atoi(optarg); | |
| 68 if (m <= 0) { | |
| 69 fprintf(stderr, "%s: multiplication factor %d out of range\n", progname, m); | |
| 70 exit(1); | |
| 71 } | |
| 72 break; | |
| 73 case 'o': | |
| 74 if ((out = fopen(optarg, "wb")) == NULL) { | |
| 75 fprintf(stderr, "%s: unable to open output file %s\n", progname, optarg); | |
| 76 exit(1); | |
| 77 } | |
| 78 strcpy(output_name, optarg); | |
| 79 break; | |
| 80 case 'p': | |
| 81 print_psnr = 1; | |
| 82 break; | |
| 83 case 'P': | |
| 84 print_psnr_only = 1; | |
| 85 break; | |
| 86 case 'C': | |
| 87 print_psnr_value_only = 1; | |
| 88 print_psnr_only = 1; | |
| 89 break; | |
| 90 } | |
| 91 } | |
| 92 | |
| 93 argc -= optind; | |
| 94 argv += optind; | |
| 95 | |
| 96 if (argc > 1) { | |
| 97 usage(); | |
| 98 exit(1); | |
| 99 } | |
| 100 | |
| 8 | 101 if (argc == 1 && *argv[0] != '-') { |
| 0 | 102 if ((in = fopen(argv[0], "rb")) == NULL) { |
| 103 fprintf(stderr, "%s: unable to open input file %s\n", progname, argv[0]); | |
| 104 exit(1); | |
| 105 } | |
| 106 else | |
| 107 strcpy(input_name, argv[0]); | |
| 8 | 108 } |
| 109 | |
| 0 | 110 if (!orig) { |
| 111 fprintf(stderr, "%s: original image file not specified, use -i file option\n", progname); | |
| 112 exit(1); | |
| 113 } | |
| 114 | |
| 115 pgm_readpgminit(in, &in_cols, &in_rows, &in_maxval, &in_format); | |
| 116 | |
| 3 | 117 pgm_readpgminit(orig, &orig_cols, &orig_rows, &orig_maxval, &orig_format); |
| 0 | 118 |
| 3 | 119 if (in_cols != orig_cols || in_rows != orig_rows) { |
| 120 fprintf(stderr, "%s: input image %s does not match dimensions of original image %s\n", progname, input_name, orig_name); | |
| 121 exit(1); | |
| 0 | 122 } |
| 123 | |
| 124 cols = in_cols; | |
| 125 rows = in_rows; | |
| 126 maxval = in_maxval; | |
| 127 | |
| 128 input_image = pgm_allocarray(cols, rows); | |
| 129 orig_image = pgm_allocarray(cols, rows); | |
| 130 | |
| 131 for (row = 0; row < rows; row++) { | |
| 132 pgm_readpgmrow(in, input_image[row], cols, in_maxval, in_format); | |
| 3 | 133 pgm_readpgmrow(orig, orig_image[row], cols, orig_maxval, orig_format); |
| 0 | 134 } |
| 135 | |
| 136 fclose(in); | |
| 3 | 137 fclose(orig); |
| 0 | 138 |
| 3 | 139 min = max = abs(input_image[0][0] - orig_image[0][0]); |
| 0 | 140 |
| 141 for (row = 0; row < rows; row++) { | |
| 142 gray *pi = input_image[row]; | |
| 143 gray *po = orig_image[row]; | |
| 144 | |
| 145 for (col = 0; col < cols; col++) { | |
| 146 int diff = abs(*pi - *po); | |
| 147 error += sqr(diff); | |
| 148 if (diff < min) min = diff; | |
| 149 if (diff > max) max = diff; | |
| 150 | |
| 3 | 151 pi++; |
| 152 po++; | |
| 0 | 153 } |
| 154 } | |
| 155 | |
| 156 for (row = 0; row < rows; row++) { | |
| 157 gray *pi = input_image[row]; | |
| 158 gray *po = orig_image[row]; | |
| 159 | |
| 160 for (col = 0; col < cols; col++) { | |
| 161 int diff = abs(*pi - *po); | |
| 3 | 162 if (m > 0) |
| 163 *pi = PIXELRANGE(diff * m); | |
| 164 else | |
| 165 *pi = PIXELRANGE((double) (diff - min) / (double) (max - min) * maxval); | |
| 0 | 166 |
| 167 pi++; | |
| 168 po++; | |
| 169 } | |
| 170 } | |
| 171 | |
| 172 if (!print_psnr_only) { | |
| 173 pgm_writepgminit(out, cols, rows, maxval, 0); | |
| 174 for (row = 0; row < rows; row++) | |
| 175 pgm_writepgmrow(out, input_image[row], cols, maxval, 0); | |
| 176 | |
| 177 fclose(out); | |
| 178 } | |
| 179 | |
| 180 pgm_freearray(input_image, rows); | |
| 181 pgm_freearray(orig_image, rows); | |
| 182 | |
| 183 if (print_psnr || print_psnr_only) { | |
| 3 | 184 double mse = error / (double) (cols * rows); |
| 0 | 185 double rmse = sqrt(mse); |
| 3 | 186 double psnr = 20.0 * log(255.0 / rmse) / log(10.0); |
| 0 | 187 FILE *print = print_psnr_only ? out : stderr; |
| 188 if (!print_psnr_value_only) { | |
| 189 if (mse > 0.0) | |
| 190 fprintf(print, "PSNR: %lf dB\n", psnr); | |
| 191 else | |
| 192 fprintf(print, "PSNR: inf\n"); | |
| 193 fprintf(print, "RMSE: %lf\n", rmse); | |
| 194 fprintf(print, "MSE: %lf\n", mse); | |
| 195 fprintf(print, "dmin, dmax: %d, %d\n", min, max); | |
| 196 } | |
| 197 else | |
| 198 fprintf(print, "%lf\n", mse > 0.0 ? psnr : 100.0); | |
| 199 } | |
| 200 | |
| 201 exit(0); | |
| 202 } |