Mercurial > hg > wm
annotate Meerwald/wm_wang_d.c @ 22:d8551fb39a5e default tip
Added tag v0.6 for changeset 1c4ccd635a68
| author | Peter Meerwald-Stadler <pmeerw@pmeerw.net> |
|---|---|
| date | Sat, 28 Jan 2023 23:57:51 +0100 |
| parents | 4987db85cfae |
| children |
| rev | line source |
|---|---|
| 0 | 1 #include "wm.h" |
| 2 #include "dwt.h" | |
| 3 #include "wang_common.h" | |
| 4 #include "dwt_util.h" | |
| 5 #include "pgm.h" | |
| 6 | |
| 7 char *progname; | |
| 8 | |
| 9 void usage(void) { | |
| 10 fprintf(stderr, "usage: %s [-a n] [-b n] [-e n] [-f n] [-F file] [-h] [-n n] [-o file] [-v n] -s file -i file file\n\n", progname); | |
| 11 fprintf(stderr, "\t-a n\t\talpha factor\n"); | |
| 12 fprintf(stderr, "\t-b n\t\tbeta factor\n"); | |
| 13 fprintf(stderr, "\t-e n\t\twavelet filtering method\n"); | |
| 14 fprintf(stderr, "\t-f n\t\tfilter number\n"); | |
| 15 fprintf(stderr, "\t-F file\t\tfilter definition file\n"); | |
| 16 fprintf(stderr, "\t-h\t\tprint usage\n"); | |
| 17 fprintf(stderr, "\t-i file\t\toriginal image file\n"); | |
| 18 fprintf(stderr, "\t-n n\t\twatermark length\n"); | |
| 19 fprintf(stderr, "\t-o file\t\tfile for extracted watermark\n"); | |
| 20 fprintf(stderr, "\t-s file\t\toriginal signature file\n"); | |
| 21 fprintf(stderr, "\t-v n\t\tverbosity level\n"); | |
| 22 exit(0); | |
| 23 } | |
| 24 | |
| 25 int main(int argc, char *argv[]) { | |
| 26 | |
| 27 FILE *in = stdin; | |
| 28 FILE *out = stdout; | |
| 29 FILE *orig = NULL; | |
| 30 FILE *sig = NULL; | |
| 31 | |
| 32 gray **input_image; | |
| 33 gray **orig_image; | |
| 34 | |
| 35 char signature_name[MAXPATHLEN]; | |
| 36 char output_name[MAXPATHLEN] = "(stdout)"; | |
| 37 char input_name[MAXPATHLEN] = "(stdin)"; | |
| 38 char orig_name[MAXPATHLEN]; | |
| 39 | |
| 40 int c, w; | |
| 41 int n = 0; | |
| 42 int method = -1; | |
| 43 int filter = 0; | |
| 44 char filter_name[MAXPATHLEN] = ""; | |
| 45 | |
| 3 | 46 int level = 0; |
| 0 | 47 double alpha = 0.0; |
| 48 double beta = 0.0; | |
| 49 | |
| 50 int in_rows, in_cols, in_format; | |
| 51 gray in_maxval; | |
| 52 int orig_rows, orig_cols, orig_format; | |
| 53 gray orig_maxval; | |
| 54 int rows, cols; | |
| 8 | 55 int row; |
| 0 | 56 |
| 57 double *watermark; | |
| 58 | |
| 59 Image_tree input_dwts; | |
| 60 Image_tree orig_dwts; | |
| 61 | |
| 62 int verbose = 0; | |
| 63 | |
| 64 progname = argv[0]; | |
| 65 | |
| 66 pgm_init(&argc, argv); wm_init2(); | |
| 67 | |
| 68 while ((c = getopt(argc, argv, "a:b:e:f:F:h?i:n:o:s:v:")) != EOF) { | |
| 69 switch (c) { | |
| 70 case 'a': | |
| 71 alpha = atof(optarg); | |
| 72 if (alpha <= 0.0) { | |
| 73 fprintf(stderr, "%s: alpha factor %f out of range\n", progname, alpha); | |
| 74 exit(1); | |
| 75 } | |
| 76 break; | |
| 77 case 'b': | |
| 78 beta = atof(optarg); | |
| 79 if (beta <= 0.0) { | |
| 80 fprintf(stderr, "%s: beta factor %f out of range\n", progname, alpha); | |
| 81 exit(1); | |
| 82 } | |
| 83 break; | |
| 84 case 'e': | |
| 85 method = atoi(optarg); | |
| 86 if (method < 0) { | |
| 87 fprintf(stderr, "%s: wavelet filtering method %d out of range\n", progname, method); | |
| 88 exit(1); | |
| 89 } | |
| 90 break; | |
| 91 case 'f': | |
| 92 filter = atoi(optarg); | |
| 93 if (filter <= 0) { | |
| 94 fprintf(stderr, "%s: filter number %d out of range\n", progname, filter); | |
| 95 exit(1); | |
| 96 } | |
| 97 break; | |
| 98 case 'F': | |
| 99 strcpy(filter_name, optarg); | |
| 100 break; | |
| 101 case 'h': | |
| 102 case '?': | |
| 103 usage(); | |
| 104 break; | |
| 105 case 'i': | |
| 106 if ((orig = fopen(optarg, "rb")) == NULL) { | |
| 107 fprintf(stderr, "%s: unable to open original image file %s\n", progname, optarg); | |
| 108 exit(1); | |
| 109 } | |
| 110 strcpy(orig_name, optarg); | |
| 111 break; | |
| 112 case 'n': | |
| 113 n = atoi(optarg); | |
| 114 if (n < 1 || n > 32000) { | |
| 115 fprintf(stderr, "%s: watermark length %d out of range\n", progname, n); | |
| 116 exit(1); | |
| 117 } | |
| 118 break; | |
| 119 case 'o': | |
| 120 if ((out = fopen(optarg, "w")) == NULL) { | |
| 121 fprintf(stderr, "%s: unable to open output file %s\n", progname, optarg); | |
| 122 exit(1); | |
| 123 } | |
| 124 strcpy(output_name, optarg); | |
| 125 break; | |
| 126 case 's': | |
| 127 if ((sig = fopen(optarg, "r")) == NULL) { | |
| 128 fprintf(stderr, "%s: unable to open signature file %s\n", progname, optarg); | |
| 129 exit(1); | |
| 130 } | |
| 131 strcpy(signature_name, optarg); | |
| 132 break; | |
| 133 case 'v': | |
| 134 verbose = atoi(optarg); | |
| 135 if (verbose < 0) { | |
| 136 fprintf(stderr, "%s: verbosity level %d out of range\n", progname, verbose); | |
| 137 exit(1); | |
| 138 } | |
| 139 break; | |
| 140 } | |
| 141 } | |
| 142 | |
| 143 argc -= optind; | |
| 144 argv += optind; | |
| 145 | |
| 146 if (argc > 1) { | |
| 147 usage(); | |
| 148 exit(1); | |
| 149 } | |
| 150 | |
| 8 | 151 if (argc == 1 && *argv[0] != '-') { |
| 0 | 152 if ((in = fopen(argv[0], "rb")) == NULL) { |
| 153 fprintf(stderr, "%s: unable to open input file %s\n", progname, argv[0]); | |
| 154 exit(1); | |
| 155 } | |
| 156 else | |
| 157 strcpy(input_name, argv[0]); | |
| 8 | 158 } |
| 159 | |
| 0 | 160 if (!orig) { |
| 161 fprintf(stderr, "%s: original image file not specified, use -i file option\n", progname); | |
| 162 exit(1); | |
| 163 } | |
| 164 | |
| 165 if (sig) { | |
| 166 char line[32]; | |
| 167 fgets(line, sizeof(line), sig); | |
| 168 if (strspn(line, "WGSG") >= 4) { | |
| 169 fscanf(sig, "%d\n", &n); | |
| 170 if (alpha == 0.0) | |
| 171 fscanf(sig, "%lf\n", &alpha); | |
| 172 else | |
|
16
4987db85cfae
fix another scanf() warning
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
15
diff
changeset
|
173 fscanf(sig, "%*f\n"); |
| 0 | 174 if (beta == 0.0) |
| 175 fscanf(sig, "%lf\n", &beta); | |
| 176 else | |
|
16
4987db85cfae
fix another scanf() warning
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
15
diff
changeset
|
177 fscanf(sig, "%*f\n"); |
| 0 | 178 if (method < 0) |
| 179 fscanf(sig, "%d\n", &method); | |
| 180 else | |
| 181 fscanf(sig, "%*d\n"); | |
| 182 if (filter == 0) | |
| 183 fscanf(sig, "%d\n", &filter); | |
| 184 else | |
| 185 fscanf(sig, "%*d\n"); | |
| 186 if (!strcmp(filter_name, "")) | |
| 15 | 187 fscanf(sig, "%[^\n\r]\n", filter_name); |
| 0 | 188 else |
| 189 fscanf(sig, "%*[^\n\r]\n"); | |
| 190 } | |
| 191 else { | |
| 192 fprintf(stderr, "%s: invalid signature file %s\n", progname, signature_name); | |
| 193 exit(1); | |
| 194 } | |
| 195 fclose(sig); | |
| 196 } | |
| 197 else { | |
| 198 fprintf(stderr, "%s: signature file not specified, use -s file option\n", progname); | |
| 199 exit(1); | |
| 200 } | |
| 201 | |
| 202 watermark = malloc(n * sizeof(double)); | |
| 203 | |
| 204 pgm_readpgminit(in, &in_cols, &in_rows, &in_maxval, &in_format); | |
| 205 pgm_readpgminit(orig, &orig_cols, &orig_rows, &orig_maxval, &orig_format); | |
| 206 | |
| 207 if (in_cols != orig_cols || in_rows != orig_rows) { | |
| 208 fprintf(stderr, "%s: input image %s does not match dimensions of original image %s\n", progname, input_name, orig_name); | |
| 209 exit(1); | |
| 210 } | |
| 211 | |
| 212 cols = in_cols; | |
| 213 rows = in_rows; | |
| 214 | |
| 215 input_image = pgm_allocarray(in_cols, in_rows); | |
| 216 | |
| 217 orig_image = pgm_allocarray(orig_cols, orig_rows); | |
| 218 | |
| 219 for (row = 0; row < in_rows; row++) { | |
| 220 pgm_readpgmrow(in, input_image[row], in_cols, in_maxval, in_format); | |
| 221 pgm_readpgmrow(orig, orig_image[row], orig_cols, orig_maxval, orig_format); | |
| 222 } | |
| 223 | |
| 224 fclose(in); | |
| 225 fclose(orig); | |
| 226 | |
| 227 // complete decomposition | |
| 3 | 228 level = find_deepest_level(cols, rows) - 1; |
| 0 | 229 |
| 3 | 230 init_dwt(cols, rows, filter_name, filter, level, method); |
| 0 | 231 #ifdef POLLEN_STUFF |
| 3 | 232 #include "pollen_stuff.c" |
| 0 | 233 #endif |
| 234 #ifdef PARAM_STUFF | |
| 3 | 235 #include "param_stuff.c" |
| 0 | 236 #endif |
| 237 | |
| 238 input_dwts = fdwt(input_image); | |
| 239 orig_dwts = fdwt(orig_image); | |
| 240 | |
| 241 // build tree for subband selection, calculate subband thresholds | |
| 242 init_subbands(orig_dwts); | |
| 243 set_subbands_type_beta(HORIZONTAL, beta); | |
| 244 set_subbands_type_beta(VERTICAL, beta); | |
| 245 calc_subbands_threshold(); | |
| 246 | |
| 247 fprintf(out, "WGWM\n"); | |
| 248 fprintf(out, "%d\n", n); | |
| 249 | |
| 250 w = 0; | |
| 251 while (w < n) { | |
| 252 Subband_data s; | |
| 253 | |
| 254 // select subband with max. threshold | |
| 255 s = select_subband(); | |
| 256 if (verbose > 1) | |
| 257 fprintf(stderr, "%s: selected subband %s%d, T=%lf, beta=%lf\n", progname, subband_name(s->type), s->level, s->T, s->beta); | |
| 258 | |
| 259 // watermark significant coefficients and set them selected | |
| 260 // check is entire signature has been embedded | |
| 261 c = select_subband_coeff(s); | |
| 262 do { | |
| 263 Pixel p; | |
| 264 Pixel q; | |
| 265 if (c < 0) | |
| 266 // no more significant coefficients in subband | |
| 267 break; | |
| 268 | |
| 269 p = get_subband_coeff(s, c); | |
| 270 if (p < s->Cmax) { | |
| 271 q = get_dwt_coeff(input_dwts, s->level, s->type, c); | |
| 272 watermark[w] = (q - p) / (alpha * s->beta * s->T); | |
| 273 fprintf(out, "%lf\n", watermark[w]); | |
| 274 | |
| 275 if (verbose > 2) | |
| 276 fprintf(stderr, "%s: detected sig. coeff. #%d (= %lf)\n from %s%d coeff. #%d\n", | |
| 277 progname, w, watermark[w], subband_name(s->type), s->level, c); | |
| 278 | |
| 279 w++; | |
| 280 } | |
| 281 mark_subband_coeff(s, c); | |
| 282 | |
| 283 // select next significant coefficient | |
| 284 c = select_subband_coeff_from(s, c); | |
| 285 } while (w < n); | |
| 286 | |
| 287 // update subband threshold | |
| 288 s->T /= 2.0; | |
| 289 | |
| 290 } | |
| 291 | |
| 292 fclose(out); | |
| 293 | |
| 294 free_subbands(); | |
| 295 | |
| 296 free(watermark); | |
| 297 | |
| 298 pgm_freearray(input_image, rows); | |
| 299 pgm_freearray(orig_image, rows); | |
| 300 | |
| 301 exit(0); | |
| 302 } |