Mercurial > hg > wm
annotate Meerwald/wm_zhu_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 "pgm.h" | |
| 8 | 4 #include "sort.h" |
| 0 | 5 |
| 6 char *progname; | |
| 7 | |
| 8 void usage(void) { | |
| 9 fprintf(stderr, "usage: %s [-a n] [-e n] [-f n] [-F file] [-h] [-l n] [-o file] [-v n] -s file -i file file\n\n", progname); | |
| 10 fprintf(stderr, "\t-a n\t\talpha factor\n"); | |
| 11 fprintf(stderr, "\t-b n\t\tbeta factor\n"); | |
| 12 fprintf(stderr, "\t-e n\t\twavelet filtering method\n"); | |
| 13 fprintf(stderr, "\t-f n\t\tfilter number\n"); | |
| 14 fprintf(stderr, "\t-F file\t\tfilter definition file\n"); | |
| 15 fprintf(stderr, "\t-h\t\tprint usage\n"); | |
| 16 fprintf(stderr, "\t-i file\t\toriginal image file\n"); | |
| 17 fprintf(stderr, "\t-l n\t\tdecomposition level\n"); | |
| 18 fprintf(stderr, "\t-o file\t\tfile for extracted watermark\n"); | |
| 19 fprintf(stderr, "\t-s file\t\toriginal signature file\n"); | |
| 20 fprintf(stderr, "\t-v n\t\tverbosity level\n"); | |
| 21 exit(0); | |
| 22 } | |
| 23 | |
| 24 void write_mark(FILE *out, double watermark[], int n) { | |
| 25 int i; | |
| 26 | |
| 27 fprintf(out, "%d\n", n); | |
| 28 for (i = 0; i < n; i++) | |
| 29 fprintf(out, "%f\n", watermark[i]); | |
| 30 } | |
| 31 | |
| 32 int main(int argc, char *argv[]) { | |
| 33 | |
| 34 FILE *in = stdin; | |
| 35 FILE *out = stdout; | |
| 36 FILE *orig = NULL; | |
| 37 FILE *sig = NULL; | |
| 38 | |
| 39 gray **input_image; | |
| 40 gray **orig_image; | |
| 41 | |
| 42 char signature_name[MAXPATHLEN]; | |
| 43 char output_name[MAXPATHLEN] = "(stdout)"; | |
| 44 char input_name[MAXPATHLEN] = "(stdin)"; | |
| 45 char orig_name[MAXPATHLEN]; | |
| 46 | |
| 47 int c, w; | |
| 48 int i; | |
| 49 int n = 0; | |
| 50 int method = -1; | |
| 51 int filter = 0; | |
| 52 char filter_name[MAXPATHLEN] = ""; | |
| 53 | |
| 54 int level = 0, levels; | |
| 55 double alpha = 0.0; | |
| 56 | |
| 57 int in_rows, in_cols, in_format; | |
| 58 gray in_maxval; | |
| 59 int orig_rows, orig_cols, orig_format; | |
| 60 gray orig_maxval; | |
| 61 int rows, cols; | |
| 8 | 62 int row; |
| 0 | 63 |
| 64 double *watermark; | |
| 65 | |
| 66 Image_tree input_dwts, orig_dwts, p, q; | |
| 67 | |
| 68 int verbose = 0; | |
| 69 | |
| 70 progname = argv[0]; | |
| 71 | |
| 72 pgm_init(&argc, argv); wm_init2(); | |
| 73 | |
| 74 while ((c = getopt(argc, argv, "a:e:f:F:h?i:l:o:s:v:")) != EOF) { | |
| 75 switch (c) { | |
| 76 case 'a': | |
| 77 alpha = atof(optarg); | |
| 78 if (alpha <= 0.0) { | |
| 79 fprintf(stderr, "%s: alpha factor %f out of range\n", progname, alpha); | |
| 80 exit(1); | |
| 81 } | |
| 82 break; | |
| 83 case 'e': | |
| 84 method = atoi(optarg); | |
| 85 if (method < 0) { | |
| 86 fprintf(stderr, "%s: wavelet filtering method %d out of range\n", progname, method); | |
| 87 exit(1); | |
| 88 } | |
| 89 break; | |
| 90 case 'f': | |
| 91 filter = atoi(optarg); | |
| 92 if (filter <= 0) { | |
| 93 fprintf(stderr, "%s: filter number %d out of range\n", progname, filter); | |
| 94 exit(1); | |
| 95 } | |
| 96 break; | |
| 97 case 'F': | |
| 98 strcpy(filter_name, optarg); | |
| 99 break; | |
| 100 case 'h': | |
| 101 case '?': | |
| 102 usage(); | |
| 103 break; | |
| 104 case 'i': | |
| 105 if ((orig = fopen(optarg, "rb")) == NULL) { | |
| 106 fprintf(stderr, "%s: unable to open original image file %s\n", progname, optarg); | |
| 107 exit(1); | |
| 108 } | |
| 109 strcpy(orig_name, optarg); | |
| 110 break; | |
| 111 case 'l': | |
| 112 level = atoi(optarg); | |
| 113 if (level <= 0) { | |
| 114 fprintf(stderr, "%s: decomposition level %d out of range\n", progname, level); | |
| 115 exit(1); | |
| 116 } | |
| 117 break; | |
| 118 case 'o': | |
| 119 if ((out = fopen(optarg, "w")) == NULL) { | |
| 120 fprintf(stderr, "%s: unable to open output file %s\n", progname, optarg); | |
| 121 exit(1); | |
| 122 } | |
| 123 strcpy(output_name, optarg); | |
| 124 break; | |
| 125 case 's': | |
| 126 if ((sig = fopen(optarg, "r")) == NULL) { | |
| 127 fprintf(stderr, "%s: unable to open signature file %s\n", progname, optarg); | |
| 128 exit(1); | |
| 129 } | |
| 130 strcpy(signature_name, optarg); | |
| 131 break; | |
| 132 case 'v': | |
| 133 verbose = atoi(optarg); | |
| 134 if (verbose < 0) { | |
| 135 fprintf(stderr, "%s: verbosity level %d out of range\n", progname, verbose); | |
| 136 exit(1); | |
| 137 } | |
| 138 break; | |
| 139 } | |
| 140 } | |
| 141 | |
| 142 argc -= optind; | |
| 143 argv += optind; | |
| 144 | |
| 145 if (argc > 1) { | |
| 146 usage(); | |
| 147 exit(1); | |
| 148 } | |
| 149 | |
| 8 | 150 if (argc == 1 && *argv[0] != '-') { |
| 0 | 151 if ((in = fopen(argv[0], "rb")) == NULL) { |
| 152 fprintf(stderr, "%s: unable to open input file %s\n", progname, argv[0]); | |
| 153 exit(1); | |
| 154 } | |
| 155 else | |
| 156 strcpy(input_name, argv[0]); | |
| 8 | 157 } |
| 158 | |
| 0 | 159 if (!orig) { |
| 160 fprintf(stderr, "%s: original image file not specified, use -i file option\n", progname); | |
| 161 exit(1); | |
| 162 } | |
| 163 | |
| 164 if (sig) { | |
| 165 char line[32]; | |
| 166 fgets(line, sizeof(line), sig); | |
| 167 if (strspn(line, "ZHSG") >= 4) { | |
| 168 fscanf(sig, "%d\n", &n); | |
| 169 if (alpha == 0.0) | |
| 170 fscanf(sig, "%lf\n", &alpha); | |
| 171 else | |
|
16
4987db85cfae
fix another scanf() warning
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
15
diff
changeset
|
172 fscanf(sig, "%*f\n"); |
| 0 | 173 if (level == 0) |
| 174 fscanf(sig, "%d\n", &level); | |
| 175 else | |
| 176 fscanf(sig, "%*d\n"); | |
| 177 if (method < 0) | |
| 178 fscanf(sig, "%d\n", &method); | |
| 179 else | |
| 180 fscanf(sig, "%*d\n"); | |
| 181 if (filter == 0) | |
| 182 fscanf(sig, "%d\n", &filter); | |
| 183 else | |
| 184 fscanf(sig, "%*d\n"); | |
| 185 if (!strcmp(filter_name, "")) | |
| 15 | 186 fscanf(sig, "%[^\n\r]\n", filter_name); |
| 0 | 187 else |
| 188 fscanf(sig, "%*[^\n\r]\n"); | |
| 189 } | |
| 190 else { | |
| 191 fprintf(stderr, "%s: invalid signature file %s\n", progname, signature_name); | |
| 192 exit(1); | |
| 193 } | |
| 194 fclose(sig); | |
| 195 } | |
| 196 else { | |
| 197 fprintf(stderr, "%s: signature file not specified, use -s file option\n", progname); | |
| 198 exit(1); | |
| 199 } | |
| 200 | |
| 201 pgm_readpgminit(in, &in_cols, &in_rows, &in_maxval, &in_format); | |
| 202 pgm_readpgminit(orig, &orig_cols, &orig_rows, &orig_maxval, &orig_format); | |
| 203 | |
| 204 if (in_cols != orig_cols || in_rows != orig_rows) { | |
| 205 fprintf(stderr, "%s: input image %s does not match dimensions of original image %s\n", progname, input_name, orig_name); | |
| 206 exit(1); | |
| 207 } | |
| 208 | |
| 209 cols = in_cols; | |
| 210 rows = in_rows; | |
| 211 | |
| 212 input_image = pgm_allocarray(in_cols, in_rows); | |
| 213 orig_image = pgm_allocarray(orig_cols, orig_rows); | |
| 214 | |
| 215 for (row = 0; row < in_rows; row++) { | |
| 216 pgm_readpgmrow(in, input_image[row], in_cols, in_maxval, in_format); | |
| 217 pgm_readpgmrow(orig, orig_image[row], orig_cols, orig_maxval, orig_format); | |
| 218 } | |
| 219 | |
| 220 fclose(in); | |
| 221 fclose(orig); | |
| 222 | |
| 223 // complete decomposition | |
| 224 levels = find_deepest_level(cols, rows) - 1; | |
| 225 if (level > levels) { | |
| 226 fprintf(stderr, "%s: decomposition level %d not possible (max. %d), image size is %d x %d\n", progname, level, levels, cols, rows); | |
| 227 exit(1); | |
| 228 } | |
| 229 | |
| 230 init_dwt(cols, rows, filter_name, filter, levels, method); | |
| 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 watermark = malloc(n * sizeof(double)); | |
| 242 if (!watermark) { | |
| 243 fprintf(stderr, "%s: malloc() failed\n\n", progname); | |
| 244 exit(1); | |
| 245 } | |
| 246 | |
| 247 fprintf(out, "ZHWM\n"); | |
| 248 fprintf(out, "%d\n", n); | |
| 249 fprintf(out, "%d\n", level); | |
| 250 | |
| 251 p = input_dwts; | |
| 252 q = orig_dwts; | |
| 253 while (p->coarse && q->coarse) { | |
| 254 double *collected_coeffs, *largest; | |
| 255 int subband_size = q->horizontal->image->size; | |
| 256 int maxselect = MIN(3 * subband_size, n + 1); | |
| 257 double threshold; | |
| 258 | |
| 259 collected_coeffs = malloc(3 * subband_size * sizeof(double)); | |
| 260 if (!collected_coeffs) { | |
| 261 fprintf(stderr, "%s: malloc() failed\n", progname); | |
| 262 exit(1); | |
| 263 } | |
| 264 | |
| 265 for (i = 0; i < subband_size; i++) { | |
| 266 collected_coeffs[3 * i + 0] = q->horizontal->image->data[i]; | |
| 267 collected_coeffs[3 * i + 1] = q->vertical->image->data[i]; | |
| 268 collected_coeffs[3 * i + 2] = q->diagonal->image->data[i]; | |
| 269 } | |
| 270 | |
| 271 largest = malloc(maxselect * sizeof(double)); | |
| 272 if (!largest) { | |
| 273 fprintf(stderr, "%s: malloc() failed\n", progname); | |
| 274 exit(1); | |
| 275 } | |
| 276 | |
| 277 select_largest_coeffs(collected_coeffs, 3 * subband_size, maxselect, largest); | |
| 278 threshold = largest[0]; | |
| 279 free(largest); | |
| 280 free(collected_coeffs); | |
| 281 | |
| 282 w = 0; | |
| 283 for (i = 0; i < subband_size && w < n; i++) { | |
| 284 if (q->horizontal->image->data[i] > threshold) | |
| 285 watermark[w++] = (p->horizontal->image->data[i] / q->horizontal->image->data[i] - 1.0) / alpha; | |
| 286 if (q->vertical->image->data[i] > threshold) | |
| 287 watermark[w++] = (p->vertical->image->data[i] / q->vertical->image->data[i] - 1.0) / alpha; | |
| 288 if (q->diagonal->image->data[i] > threshold) | |
| 289 watermark[w++] = (p->diagonal->image->data[i] / q->diagonal->image->data[i] - 1.0) / alpha; | |
| 290 } | |
| 291 | |
| 292 write_mark(out, watermark, w); | |
| 293 | |
| 294 p = p->coarse; | |
| 295 q = q->coarse; | |
| 296 } | |
| 297 | |
| 298 fclose(out); | |
| 299 | |
| 300 free(watermark); | |
| 301 | |
| 302 pgm_freearray(input_image, rows); | |
| 303 pgm_freearray(orig_image, rows); | |
| 304 | |
| 305 exit(0); | |
| 306 } |