Mercurial > hg > wm
annotate Meerwald/wm_corvi_d.c @ 21:1c4ccd635a68 v0.6
ignore *.swp
| author | Peter Meerwald-Stadler <pmeerw@pmeerw.net> |
|---|---|
| date | Sat, 28 Jan 2023 23:57:40 +0100 |
| parents | 4987db85cfae |
| children |
| rev | line source |
|---|---|
| 0 | 1 #include "dwt.h" |
| 2 #include "pgm.h" | |
| 3 | |
| 4 char *progname; | |
| 5 | |
| 6 void usage(void) { | |
| 7 fprintf(stderr, "usage: %s [-a n] [-h] [-n n] [-o file] [-s file] [-v n] -i file file\n\n", progname); | |
| 8 fprintf(stderr, "\t-a n\t\talpha factor\n"); | |
| 9 fprintf(stderr, "\t-e n\t\twavelet filtering method\n"); | |
| 10 fprintf(stderr, "\t-f n\t\tfilter number\n"); | |
| 11 fprintf(stderr, "\t-F file\t\tfilter definition file\n"); | |
| 12 fprintf(stderr, "\t-h\t\tprint usage\n"); | |
| 13 fprintf(stderr, "\t-i file\t\toriginal image file\n"); | |
| 14 fprintf(stderr, "\t-n n\t\twatermark length\n"); | |
| 15 fprintf(stderr, "\t-o file\t\textracted signature file\n"); | |
| 16 fprintf(stderr, "\t-s file\t\toriginal signature file\n"); | |
| 17 fprintf(stderr, "\t-v n\t\tverbosity level\n"); | |
| 18 exit(0); | |
| 19 } | |
| 20 | |
| 21 int main(int argc, char *argv[]) { | |
| 22 | |
| 23 FILE *in = stdin; | |
| 24 FILE *out = stdout; | |
| 25 FILE *orig = NULL; | |
| 26 FILE *sig = NULL; | |
| 27 | |
| 28 gray **input_image; | |
| 29 gray **orig_image; | |
| 30 | |
| 31 char signature_name[MAXPATHLEN]; | |
| 32 char output_name[MAXPATHLEN] = "(stdout)"; | |
| 33 char input_name[MAXPATHLEN] = "(stdin)"; | |
| 34 char orig_name[MAXPATHLEN]; | |
| 35 | |
| 36 int c; | |
| 37 int n = 0; | |
| 38 int method = -1; | |
| 39 int filter = 0; | |
| 40 char filter_name[MAXPATHLEN] = ""; | |
| 41 | |
| 3 | 42 int level = 0; |
| 0 | 43 double alpha = 0.0; |
| 44 | |
| 45 int in_rows, in_cols, in_format; | |
| 46 gray in_maxval; | |
| 47 int orig_rows, orig_cols, orig_format; | |
| 48 gray orig_maxval; | |
| 49 int rows, cols; | |
| 50 int row, col; | |
| 51 | |
| 52 Image_tree input_dwts; | |
| 53 Image_tree orig_dwts; | |
| 54 | |
| 55 int verbose = 0; | |
| 56 | |
| 57 progname = argv[0]; | |
| 58 | |
| 59 pgm_init(&argc, argv); wm_init2(); | |
| 60 | |
| 61 while ((c = getopt(argc, argv, "a:e:f:F:h?i:n:o:s:v:")) != EOF) { | |
| 62 switch (c) { | |
| 63 case 'a': | |
| 64 alpha = atof(optarg); | |
| 65 if (alpha <= 0.0) { | |
| 66 fprintf(stderr, "%s: alpha factor %f out of range\n", progname, alpha); | |
| 67 exit(1); | |
| 68 } | |
| 69 break; | |
| 70 case 'e': | |
| 71 method = atoi(optarg); | |
| 72 if (method < 0) { | |
| 73 fprintf(stderr, "%s: wavelet filtering method %d out of range\n", progname, method); | |
| 74 exit(1); | |
| 75 } | |
| 76 break; | |
| 77 case 'f': | |
| 78 filter = atoi(optarg); | |
| 79 if (filter <= 0) { | |
| 80 fprintf(stderr, "%s: filter number %d out of range\n", progname, filter); | |
| 81 exit(1); | |
| 82 } | |
| 83 break; | |
| 84 case 'F': | |
| 85 strcpy(filter_name, optarg); | |
| 86 break; | |
| 87 case 'h': | |
| 88 case '?': | |
| 89 usage(); | |
| 90 break; | |
| 91 case 'i': | |
| 92 if ((orig = fopen(optarg, "rb")) == NULL) { | |
| 93 fprintf(stderr, "%s: unable to open original image file %s\n", progname, optarg); | |
| 94 exit(1); | |
| 95 } | |
| 96 strcpy(orig_name, optarg); | |
| 97 break; | |
| 98 case 'n': | |
| 99 n = atoi(optarg); | |
| 100 if (n < 1 || n > 1000) { | |
| 101 fprintf(stderr, "%s: watermark length %d out of range\n", progname, n); | |
| 102 exit(1); | |
| 103 } | |
| 104 break; | |
| 105 case 'o': | |
| 106 if ((out = fopen(optarg, "w")) == NULL) { | |
| 107 fprintf(stderr, "%s: unable to open output file %s\n", progname, optarg); | |
| 108 exit(1); | |
| 109 } | |
| 110 strcpy(output_name, optarg); | |
| 111 break; | |
| 112 case 's': | |
| 113 if ((sig = fopen(optarg, "r")) == NULL) { | |
| 114 fprintf(stderr, "%s: unable to open signature file %s\n", progname, optarg); | |
| 115 exit(1); | |
| 116 } | |
| 117 strcpy(signature_name, optarg); | |
| 118 break; | |
| 119 case 'v': | |
| 120 verbose = atoi(optarg); | |
| 121 if (verbose < 0) { | |
| 122 fprintf(stderr, "%s: verbosity level %d out of range\n", progname, verbose); | |
| 123 exit(1); | |
| 124 } | |
| 125 break; | |
| 126 } | |
| 127 } | |
| 128 | |
| 129 argc -= optind; | |
| 130 argv += optind; | |
| 131 | |
| 132 if (argc > 1) { | |
| 133 usage(); | |
| 134 exit(1); | |
| 135 } | |
| 136 | |
| 8 | 137 if (argc == 1 && *argv[0] != '-') { |
| 0 | 138 if ((in = fopen(argv[0], "rb")) == NULL) { |
| 139 fprintf(stderr, "%s: unable to open input file %s\n", progname, argv[0]); | |
| 140 exit(1); | |
| 141 } | |
| 142 else | |
| 143 strcpy(input_name, argv[0]); | |
| 8 | 144 } |
| 145 | |
| 0 | 146 if (!orig) { |
| 147 fprintf(stderr, "%s: original image file not specified, use -i file option\n", progname); | |
| 148 exit(1); | |
| 149 } | |
| 150 | |
| 151 if (sig) { | |
| 152 char line[32]; | |
| 153 fgets(line, sizeof(line), sig); | |
| 154 if (strspn(line, "CVSG") >= 4) { | |
| 155 fscanf(sig, "%d\n", &n); | |
| 156 if (alpha == 0.0) | |
| 157 fscanf(sig, "%lf\n", &alpha); | |
| 158 else | |
|
16
4987db85cfae
fix another scanf() warning
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
15
diff
changeset
|
159 fscanf(sig, "%*f\n"); |
| 0 | 160 if (method < 0) |
| 161 fscanf(sig, "%d\n", &method); | |
| 162 else | |
| 163 fscanf(sig, "%*d\n"); | |
| 164 if (filter == 0) | |
| 165 fscanf(sig, "%d\n", &filter); | |
| 166 else | |
| 167 fscanf(sig, "%*d\n"); | |
| 168 if (!strcmp(filter_name, "")) | |
| 15 | 169 fscanf(sig, "%[^\n\r]\n", filter_name); |
| 0 | 170 else |
| 171 fscanf(sig, "%*[^\n\r]\n"); | |
| 172 } | |
| 173 else { | |
| 174 fprintf(stderr, "%s: invalid signature file %s\n", progname, signature_name); | |
| 175 exit(1); | |
| 176 } | |
| 177 fclose(sig); | |
| 178 } | |
| 179 else { | |
| 180 fprintf(stderr, "%s: signature file not specified, use -s file option\n", progname); | |
| 181 exit(1); | |
| 182 } | |
| 183 | |
| 184 pgm_readpgminit(in, &in_cols, &in_rows, &in_maxval, &in_format); | |
| 185 pgm_readpgminit(orig, &orig_cols, &orig_rows, &orig_maxval, &orig_format); | |
| 186 | |
| 187 if (in_cols != orig_cols || in_rows != orig_rows) { | |
| 188 fprintf(stderr, "%s: input image %s does not match dimensions of original image %s\n", progname, input_name, orig_name); | |
| 189 exit(1); | |
| 190 } | |
| 191 | |
| 192 cols = in_cols; | |
| 193 rows = in_rows; | |
| 194 | |
| 195 input_image = pgm_allocarray(in_cols, in_rows); | |
| 196 | |
| 197 orig_image = pgm_allocarray(orig_cols, orig_rows); | |
| 198 | |
| 199 for (row = 0; row < in_rows; row++) | |
| 200 pgm_readpgmrow(in, input_image[row], in_cols, in_maxval, in_format); | |
| 201 | |
| 202 fclose(in); | |
| 203 | |
| 204 for (row = 0; row < orig_rows; row++) | |
| 205 pgm_readpgmrow(orig, orig_image[row], orig_cols, orig_maxval, orig_format); | |
| 206 | |
| 207 fclose(orig); | |
| 208 | |
| 209 level = 0; | |
| 210 row = rows; | |
| 211 col = cols; | |
| 212 while (n < row * col / 4.0 && row >= 2 && col >= 2) { | |
| 213 row /= 2; | |
| 214 col /= 2; | |
| 215 level++; | |
| 216 } | |
| 217 | |
| 218 if (verbose >= 2) { | |
| 219 fprintf(stderr, "%s: extracting from coarse image (x %d/y %d) at level %d\n", progname, col, row, level); | |
| 220 } | |
| 221 | |
| 222 init_dwt(cols, rows, filter_name, filter, level, method); | |
| 223 #ifdef POLLEN_STUFF | |
| 3 | 224 #include "pollen_stuff.c" |
| 0 | 225 #endif |
| 226 #ifdef PARAM_STUFF | |
| 3 | 227 #include "param_stuff.c" |
| 0 | 228 #endif |
| 229 | |
| 230 input_dwts = fdwt(input_image); | |
| 231 orig_dwts = fdwt(orig_image); | |
| 232 | |
| 233 fprintf(out, "CVWM\n"); | |
| 234 fprintf(out, "%d\n", n); | |
| 235 | |
| 236 { | |
| 237 Image_tree p = input_dwts; | |
| 238 Image_tree q = orig_dwts; | |
| 239 Image input_img; | |
| 240 Image orig_img; | |
| 241 double input_med; | |
| 242 double orig_med; | |
| 243 double input_var; | |
| 244 double orig_var; | |
| 245 | |
| 246 while (!p->image) | |
| 247 p = p->coarse; | |
| 248 | |
| 249 while (!q->image) | |
| 250 q = q->coarse; | |
| 251 | |
| 252 input_img = p->image; | |
| 253 orig_img = q->image; | |
| 254 | |
| 255 input_med = 0.0; | |
| 256 for (row = 0; row < input_img->height; row++) | |
| 257 for (col = 0; col < input_img->width; col++) | |
| 258 input_med += get_pixel(input_img, col, row); | |
| 259 input_med /= (double) (input_img->height * input_img->width); | |
| 260 | |
| 261 orig_med = 0.0; | |
| 262 for (row = 0; row < orig_img->height; row++) | |
| 263 for (col = 0; col < orig_img->width; col++) | |
| 264 orig_med += get_pixel(orig_img, col, row); | |
| 265 orig_med /= (double) (orig_img->height * orig_img->width); | |
| 266 | |
| 267 orig_var = 0.0; | |
| 268 for (row = 0; row < orig_img->height; row++) | |
| 269 for (col = 0; col < orig_img->width; col++) | |
| 270 orig_var += sqr(get_pixel(orig_img, col, row) - orig_med); | |
| 271 orig_var /= (double) (orig_img->height * orig_img->width); | |
| 272 | |
| 273 input_var = 0.0; | |
| 274 for (row = 0; row < input_img->height; row++) | |
| 275 for (col = 0; col < input_img->width; col++) | |
| 276 input_var += sqr(get_pixel(input_img, col, row) - input_med); | |
| 277 input_var /= (double) (input_img->height * input_img->width); | |
| 278 | |
| 279 orig_var = sqrt(orig_var); | |
| 280 input_var = sqrt(input_var); | |
| 281 | |
| 282 if (verbose > 3) | |
| 283 fprintf(stderr, "%s: mean (input, orig): %f, %f,\n variance (input, orig): %f, %f\n", progname, input_med, orig_med, input_var, orig_var); | |
| 284 | |
| 285 row = 0; | |
| 286 col = 0; | |
| 287 while (n > 0) { | |
| 288 double input_pix; | |
| 289 double orig_pix; | |
| 290 double x; | |
| 291 | |
| 292 input_pix = get_pixel(input_img, col, row); | |
| 293 orig_pix = get_pixel(orig_img, col, row); | |
| 294 | |
| 295 x = (((input_pix - input_med) * (orig_var / input_var) - (orig_pix / orig_med)) / (orig_pix - orig_med) - 1.0) / alpha; | |
| 296 | |
| 297 fprintf(out, "%f\n", x); | |
| 298 | |
| 299 if (++col == orig_img->width) { col = 0; row++; } | |
| 300 n--; | |
| 301 } | |
| 302 } | |
| 303 | |
| 304 fclose(out); | |
| 305 | |
| 306 pgm_freearray(input_image, rows); | |
| 307 pgm_freearray(orig_image, rows); | |
| 308 | |
| 309 exit(0); | |
| 310 } |