Mercurial > hg > wm
annotate Meerwald/wm_corvi_s.c @ 20:bd669312f068
suppress warnings, fix link errors
| author | Peter Meerwald-Stadler <pmeerw@pmeerw.net> |
|---|---|
| date | Sat, 28 Jan 2023 23:54:58 +0100 |
| parents | 4987db85cfae |
| children |
| rev | line source |
|---|---|
| 0 | 1 #include "wm.h" |
| 2 #include "wm_dwt.h" | |
| 3 #include "pgm.h" | |
| 4 | |
| 5 char *progname; | |
| 6 | |
| 7 void usage(void) { | |
| 8 fprintf(stderr, "usage: %s [-a n] [-h] [-n n] [-o file] [-q n] [-s file] [-v n] -i file file\n\n", progname); | |
| 9 fprintf(stderr, "\t-a n\t\talpha factor\n"); | |
| 10 fprintf(stderr, "\t-e n\t\twavelet filtering method\n"); | |
| 11 fprintf(stderr, "\t-f n\t\tfilter number\n"); | |
| 12 fprintf(stderr, "\t-F file\t\tfilter definition file\n"); | |
| 13 fprintf(stderr, "\t-h\t\tprint usage\n"); | |
| 14 fprintf(stderr, "\t-i file\t\toriginal image file\n"); | |
| 15 fprintf(stderr, "\t-n n\t\twatermark length\n"); | |
| 16 fprintf(stderr, "\t-o file\t\textracted signature file\n"); | |
| 17 fprintf(stderr, "\t-q n\t\tquantization/quality factor\n"); | |
| 18 fprintf(stderr, "\t-s file\t\toriginal signature file\n"); | |
| 19 fprintf(stderr, "\t-v n\t\tverbosity level\n"); | |
| 20 exit(0); | |
| 21 } | |
| 22 | |
| 23 int main(int argc, char *argv[]) { | |
| 24 | |
| 25 FILE *in = stdin; | |
| 26 FILE *out = stdout; | |
| 27 FILE *orig = NULL; | |
| 28 FILE *sig = NULL; | |
| 29 | |
| 30 gray **input_image; | |
| 31 gray **orig_image; | |
| 32 | |
| 33 char signature_name[MAXPATHLEN]; | |
| 34 char output_name[MAXPATHLEN] = "(stdout)"; | |
| 35 char input_name[MAXPATHLEN] = "(stdin)"; | |
| 36 char orig_name[MAXPATHLEN]; | |
| 37 | |
| 38 int c; | |
| 39 int i; | |
| 40 int quantization = 0; | |
| 41 int n = 0; | |
| 42 int method = -1; | |
| 43 int filter = 0; | |
| 44 char filter_name[MAXPATHLEN] = ""; | |
| 45 | |
| 46 int level; | |
| 47 double alpha = 0.0; | |
| 48 | |
| 49 int in_rows, in_cols, in_format; | |
| 50 gray in_maxval; | |
| 51 int orig_rows, orig_cols, orig_format; | |
| 52 gray orig_maxval; | |
| 53 int rows, cols; | |
| 54 int row, col; | |
| 55 | |
| 56 Image_tree input_dwts; | |
| 57 Image_tree orig_dwts; | |
| 58 | |
| 59 int verbose = 0; | |
| 60 | |
| 61 progname = argv[0]; | |
| 62 | |
| 63 pgm_init(&argc, argv); wm_init2(); | |
| 64 | |
| 65 while ((c = getopt(argc, argv, "a:e:f:F:h?i:n:o:s:v:")) != EOF) { | |
| 66 switch (c) { | |
| 67 case 'a': | |
| 68 alpha = atof(optarg); | |
| 69 if (alpha <= 0.0) { | |
| 70 fprintf(stderr, "%s: alpha factor %f out of range\n", progname, alpha); | |
| 71 exit(1); | |
| 72 } | |
| 73 break; | |
| 74 case 'e': | |
| 75 method = atoi(optarg); | |
| 76 if (method < 0) { | |
| 77 fprintf(stderr, "%s: wavelet filtering method %d out of range\n", progname, method); | |
| 78 exit(1); | |
| 79 } | |
| 80 break; | |
| 81 case 'f': | |
| 82 filter = atoi(optarg); | |
| 83 if (filter <= 0) { | |
| 84 fprintf(stderr, "%s: filter number %d out of range\n", progname, filter); | |
| 85 exit(1); | |
| 86 } | |
| 87 break; | |
| 88 case 'F': | |
| 89 strcpy(filter_name, optarg); | |
| 90 break; | |
| 91 case 'h': | |
| 92 case '?': | |
| 93 usage(); | |
| 94 break; | |
| 95 case 'i': | |
| 96 if ((orig = fopen(optarg, "rb")) == NULL) { | |
| 97 fprintf(stderr, "%s: unable to open original image file %s\n", progname, optarg); | |
| 98 exit(1); | |
| 99 } | |
| 100 strcpy(orig_name, optarg); | |
| 101 break; | |
| 102 case 'n': | |
| 103 n = atoi(optarg); | |
| 104 if (n < 1 || n > 1000) { | |
| 105 fprintf(stderr, "%s: watermark length %d out of range\n", progname, n); | |
| 106 exit(1); | |
| 107 } | |
| 108 break; | |
| 109 case 'o': | |
| 110 if ((out = fopen(optarg, "w")) == NULL) { | |
| 111 fprintf(stderr, "%s: unable to open output file %s\n", progname, optarg); | |
| 112 exit(1); | |
| 113 } | |
| 114 strcpy(output_name, optarg); | |
| 115 break; | |
| 116 case 's': | |
| 117 if ((sig = fopen(optarg, "r")) == NULL) { | |
| 118 fprintf(stderr, "%s: unable to open signature file %s\n", progname, optarg); | |
| 119 exit(1); | |
| 120 } | |
| 121 strcpy(signature_name, optarg); | |
| 122 break; | |
| 123 case 'v': | |
| 124 verbose = atoi(optarg); | |
| 125 if (verbose < 0) { | |
| 126 fprintf(stderr, "%s: verbosity level %d out of range\n", progname, verbose); | |
| 127 exit(1); | |
| 128 } | |
| 129 break; | |
| 130 } | |
| 131 } | |
| 132 | |
| 133 argc -= optind; | |
| 134 argv += optind; | |
| 135 | |
| 136 if (argc > 1) { | |
| 137 usage(); | |
| 138 exit(1); | |
| 139 } | |
| 140 | |
| 141 if (argc == 1 && *argv[0] != '-') | |
| 142 if ((in = fopen(argv[0], "rb")) == NULL) { | |
| 143 fprintf(stderr, "%s: unable to open input file %s\n", progname, argv[0]); | |
| 144 exit(1); | |
| 145 } | |
| 146 else | |
| 147 strcpy(input_name, argv[0]); | |
| 148 | |
| 149 if (!orig) { | |
| 150 fprintf(stderr, "%s: original image file not specified, use -i file option\n", progname); | |
| 151 exit(1); | |
| 152 } | |
| 153 | |
| 154 if (sig) { | |
| 155 char line[32]; | |
| 156 fgets(line, sizeof(line), sig); | |
| 157 if (strspn(line, "CVSG") >= 4) { | |
| 158 fscanf(sig, "%d\n", &n); | |
| 159 if (alpha == 0.0) | |
| 160 fscanf(sig, "%lf\n", &alpha); | |
| 161 else | |
|
16
4987db85cfae
fix another scanf() warning
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
15
diff
changeset
|
162 fscanf(sig, "%*f\n"); |
| 0 | 163 if (quantization == 0) |
| 164 fscanf(sig, "%d\n", &quantization); | |
| 165 else | |
| 166 fscanf(sig, "%*d\n"); | |
| 167 if (method < 0) | |
| 168 fscanf(sig, "%d\n", &method); | |
| 169 else | |
| 170 fscanf(sig, "%*d\n"); | |
| 171 if (filter == 0) | |
| 172 fscanf(sig, "%d\n", &filter); | |
| 173 else | |
| 174 fscanf(sig, "%*d\n"); | |
| 175 if (!strcmp(filter_name, "")) | |
| 15 | 176 fscanf(sig, "%[^\n\r]\n", filter_name); |
| 0 | 177 else |
| 178 fscanf(sig, "%*[^\n\r]\n"); | |
| 179 } | |
| 180 else { | |
| 181 fprintf(stderr, "%s: invalid signature file %s\n", progname, signature_name); | |
| 182 exit(1); | |
| 183 } | |
| 184 fclose(sig); | |
| 185 } | |
| 186 else { | |
| 187 fprintf(stderr, "%s: signature file not specified, use -s file option\n", progname); | |
| 188 exit(1); | |
| 189 } | |
| 190 | |
| 191 pgm_readpgminit(in, &in_cols, &in_rows, &in_maxval, &in_format); | |
| 192 pgm_readpgminit(orig, &orig_cols, &orig_rows, &orig_maxval, &orig_format); | |
| 193 | |
| 194 if (in_cols != orig_cols || in_rows != orig_rows) { | |
| 195 fprintf(stderr, "%s: input image %s does not match dimensions of original image %s\n", progname, input_name, orig_name); | |
| 196 exit(1); | |
| 197 } | |
| 198 | |
| 199 cols = in_cols; | |
| 200 rows = in_rows; | |
| 201 | |
| 202 input_image = pgm_allocarray(in_cols, in_rows); | |
| 203 | |
| 204 orig_image = pgm_allocarray(orig_cols, orig_rows); | |
| 205 | |
| 206 for (row = 0; row < in_rows; row++) | |
| 207 pgm_readpgmrow(in, input_image[row], in_cols, in_maxval, in_format); | |
| 208 | |
| 209 fclose(in); | |
| 210 | |
| 211 for (row = 0; row < orig_rows; row++) | |
| 212 pgm_readpgmrow(orig, orig_image[row], orig_cols, orig_maxval, orig_format); | |
| 213 | |
| 214 fclose(orig); | |
| 215 | |
| 216 level = 0; | |
| 217 row = rows; | |
| 218 col = cols; | |
| 219 while (n < row * col / 4.0 && row >= 2 && col >= 2) { | |
| 220 row /= 2; | |
| 221 col /= 2; | |
| 222 level++; | |
| 223 } | |
| 224 | |
| 225 if (verbose >= 2) { | |
| 226 fprintf(stderr, "%s: extracting from coarse image (x %d/y %d) at level %d\n", progname, col, row, level); | |
| 227 } | |
| 228 | |
| 229 init_dwt(cols, rows, filter_name, filter, level, method); | |
| 230 input_dwts = fdwt(input_image); | |
| 231 orig_dwts = fdwt(orig_image); | |
| 232 | |
| 233 fprintf(out, "CVSG\n"); | |
| 234 fprintf(out, "%d\n", n); | |
| 235 fprintf(out, "%f\n", alpha); | |
| 236 fprintf(out, "%d\n", quantization); | |
| 237 fprintf(out, "%d\n", method); | |
| 238 fprintf(out, "%d\n", filter); | |
| 239 fprintf(out, "%s\n", filter_name); | |
| 240 | |
| 241 { | |
| 242 Image_tree p = input_dwts; | |
| 243 Image_tree q = orig_dwts; | |
| 244 Image input_img; | |
| 245 Image orig_img; | |
| 246 double input_med; | |
| 247 double orig_med; | |
| 248 | |
| 249 while (!p->image) | |
| 250 p = p->coarse; | |
| 251 | |
| 252 while (!q->image) | |
| 253 q = q->coarse; | |
| 254 | |
| 255 input_img = p->image; | |
| 256 orig_img = q->image; | |
| 257 | |
| 258 input_med = 0.0; | |
| 259 for (row = 0; row < input_img->height; row++) | |
| 260 for (col = 0; col < input_img->width; col++) | |
| 261 input_med += get_pixel(input_img, col, row); | |
| 262 input_med /= input_img->height * input_img->width; | |
| 263 | |
| 264 orig_med = 0.0; | |
| 265 for (row = 0; row < orig_img->height; row++) | |
| 266 for (col = 0; col < orig_img->width; col++) | |
| 267 orig_med += get_pixel(orig_img, col, row); | |
| 268 orig_med /= orig_img->height * orig_img->width; | |
| 269 | |
| 270 row = 0; | |
| 271 col = 0; | |
| 272 while (n > 0) { | |
| 273 Pixel input_pix; | |
| 274 Pixel orig_pix; | |
| 275 double x; | |
| 276 | |
| 277 input_pix = get_pixel(input_img, col, row); | |
| 278 orig_pix = get_pixel(orig_img, col, row); | |
| 279 | |
| 280 x = ((input_pix - orig_pix) / (orig_pix - orig_med)) / alpha; | |
| 281 | |
| 282 fprintf(out, "%f\n", x); | |
| 283 | |
| 284 if (++col == orig_img->width) { col = 0; row++; } | |
| 285 n--; | |
| 286 } | |
| 287 } | |
| 288 | |
| 289 fclose(out); | |
| 290 | |
| 291 pgm_freearray(input_image, rows); | |
| 292 pgm_freearray(orig_image, rows); | |
| 293 | |
| 294 exit(0); | |
| 295 } |