Mercurial > hg > wm
annotate Meerwald-dir/wm_xia_e.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" |
| 2 #include "dwt.h" | |
|
24
9f20bce6184e
move directories, support netpbm 11
Peter Meerwald-Stadler <pmeerw@pmeerw.net>
parents:
16
diff
changeset
|
3 #include "netpbm/pgm.h" |
| 0 | 4 #include "dwt_util.h" |
| 5 | |
| 6 char *progname; | |
| 7 | |
| 8 void usage(void) { | |
| 9 fprintf(stderr, "usage: %s [-a n] [-e n] [-f n] [-F n] [-h] [-l n] [-o file] [-v n] -s file file\n\n", progname); | |
| 10 fprintf(stderr, "\t-a n\t\talpha factor/embedding strength\n"); | |
| 11 fprintf(stderr, "\t-e n\t\twavelet filtering method\n"); | |
| 12 fprintf(stderr, "\t-f n\t\tfilter number\n"); | |
| 13 fprintf(stderr, "\t-F file\t\tfilter definition file\n"); | |
| 14 fprintf(stderr, "\t-h\t\tprint usage\n"); | |
| 15 fprintf(stderr, "\t-l n\t\tdecomposition level\n"); | |
| 16 fprintf(stderr, "\t-o file\t\toutput (watermarked) file\n"); | |
| 17 fprintf(stderr, "\t-s file\t\tsignature to embed in input image\n"); | |
| 18 fprintf(stderr, "\t-v n\t\tverbosity level\n"); | |
| 19 exit(0); | |
| 20 } | |
| 21 | |
| 22 void mark_subband(Image_tree s, int name, double alpha, double watermark[], int n, int verbose) { | |
| 23 int i, j; | |
| 24 int w; | |
| 25 | |
| 26 w = 0; | |
| 27 for (i = 5; i < s->image->height-5; i++) | |
| 28 for (j = 5; j < s->image->width-5; j++) { | |
| 29 double coeff, newcoeff; | |
| 30 | |
| 31 coeff = get_pixel(s->image, i, j); | |
| 32 if (fabs(coeff) > 20.0) { | |
| 33 newcoeff = coeff + alpha * pow(fabs(coeff), 1.2) * watermark[w++ % n]; | |
| 34 set_pixel(s->image, i, j, newcoeff); | |
| 35 } | |
| 36 } | |
| 37 | |
| 38 if (verbose > 3) | |
| 39 fprintf(stderr, "%s: watermarking %s%d, size %d x %d; embedded %d coeffs.\n", | |
| 40 progname, subband_name(name), s->level, s->image->width, s->image->height, w); | |
| 41 } | |
| 42 | |
| 43 int main(int argc, char *argv[]) { | |
| 44 | |
| 45 FILE *in = stdin; | |
| 46 FILE *out = stdout; | |
| 47 FILE *sig = NULL; | |
| 48 | |
| 49 char output_name[MAXPATHLEN] = "(stdout)"; | |
| 50 char input_name[MAXPATHLEN] = "(stdin)"; | |
| 51 char signature_name[MAXPATHLEN]; | |
| 52 | |
| 8 | 53 int i, c; |
| 54 int row; | |
| 0 | 55 |
| 56 int n; | |
| 57 | |
| 58 double alpha = 0.0; | |
| 59 int level = 0; | |
| 60 | |
| 61 int filter = 0; | |
| 62 int method = -1; | |
| 63 int levels; | |
| 64 char filter_name[MAXPATHLEN] = ""; | |
| 65 | |
| 66 int verbose = 0; | |
| 67 | |
| 68 gray **image; | |
| 69 Image_tree p, dwts; | |
| 70 | |
| 71 gray maxval; | |
| 8 | 72 int rows, cols, format; |
| 0 | 73 |
| 74 double *watermark; | |
| 75 | |
| 76 progname = argv[0]; | |
| 77 | |
| 78 pgm_init(&argc, argv); wm_init(); | |
| 79 | |
| 80 while ((c = getopt(argc, argv, "a:e:f:F:h?o:l:s:v:")) != EOF) { | |
| 81 switch (c) { | |
| 82 case 'a': | |
| 83 alpha = atof(optarg); | |
| 84 if (alpha <= 0.0) { | |
| 85 fprintf(stderr, "%s: alpha factor %f out of range\n", progname, alpha); | |
| 86 exit(1); | |
| 87 } | |
| 88 break; | |
| 89 case 'l': | |
| 90 level = atoi(optarg); | |
| 91 if (level <= 0) { | |
| 92 fprintf(stderr, "%s: decomposition level %d out of range\n", progname, level); | |
| 93 exit(1); | |
| 94 } | |
| 95 break; | |
| 96 case 'e': | |
| 97 method = atoi(optarg); | |
| 98 if (method < 0) { | |
| 99 fprintf(stderr, "%s: wavelet filtering method %d out of range\n", progname, method); | |
| 100 exit(1); | |
| 101 } | |
| 102 break; | |
| 103 case 'f': | |
| 104 filter = atoi(optarg); | |
| 105 if (filter <= 0) { | |
| 106 fprintf(stderr, "%s: filter number %d out of range\n", progname, filter); | |
| 107 exit(1); | |
| 108 } | |
| 109 break; | |
| 110 case 'F': | |
| 111 strcpy(filter_name, optarg); | |
| 112 break; | |
| 113 case 'h': | |
| 114 case '?': | |
| 115 usage(); | |
| 116 break; | |
| 117 case 'o': | |
| 118 if ((out = fopen(optarg, "wb")) == NULL) { | |
| 119 fprintf(stderr, "%s: unable to open output file %s\n", progname, optarg); | |
| 120 exit(1); | |
| 121 } | |
| 122 strcpy(output_name, optarg); | |
| 123 break; | |
| 124 case 's': | |
| 125 if ((sig = fopen(optarg, "r")) == NULL) { | |
| 126 fprintf(stderr, "%s: unable to open signature file %s\n", progname, optarg); | |
| 127 exit(1); | |
| 128 } | |
| 129 strcpy(signature_name, optarg); | |
| 130 break; | |
| 131 case 'v': | |
| 132 verbose = atoi(optarg); | |
| 133 if (verbose < 0) { | |
| 134 fprintf(stderr, "%s: verbosity level %d out of range\n", progname, verbose); | |
| 135 exit(1); | |
| 136 } | |
| 137 break; | |
| 138 } | |
| 139 } | |
| 140 | |
| 141 argc -= optind; | |
| 142 argv += optind; | |
| 143 | |
| 144 if (argc > 1) { | |
| 145 usage(); | |
| 146 exit(1); | |
| 147 } | |
| 148 | |
| 8 | 149 if (argc == 1 && *argv[0] != '-') { |
| 0 | 150 if ((in = fopen(argv[0], "rb")) == NULL) { |
| 151 fprintf(stderr, "%s: unable to open input file %s\n", progname, argv[0]); | |
| 152 exit(1); | |
| 153 } | |
| 154 else | |
| 155 strcpy(input_name, argv[0]); | |
| 8 | 156 } |
| 157 | |
| 0 | 158 if (sig) { |
| 159 char line[32]; | |
| 160 fgets(line, sizeof(line), sig); | |
| 161 if (strspn(line, "XASG") >= 4) { | |
| 162 fscanf(sig, "%d\n", &n); | |
| 163 if (alpha == 0.0) | |
| 164 fscanf(sig, "%lf\n", &alpha); | |
| 165 else | |
|
16
4987db85cfae
fix another scanf() warning
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
15
diff
changeset
|
166 fscanf(sig, "%*f\n"); |
| 0 | 167 if (level == 0) |
| 168 fscanf(sig, "%d\n", &level); | |
| 169 else | |
| 170 fscanf(sig, "%*d\n"); | |
| 171 if (method < 0) | |
| 172 fscanf(sig, "%d\n", &method); | |
| 173 else | |
| 174 fscanf(sig, "%*d\n"); | |
| 175 if (filter == 0) | |
| 176 fscanf(sig, "%d\n", &filter); | |
| 177 else | |
| 178 fscanf(sig, "%*d\n"); | |
| 179 if (!strcmp(filter_name, "")) | |
| 15 | 180 fscanf(sig, "%[^\n\r]\n", filter_name); |
| 0 | 181 else |
| 182 fscanf(sig, "%*[^\n\r]\n"); | |
| 183 } | |
| 184 else { | |
| 185 fprintf(stderr, "%s: invalid signature file %s\n", progname, signature_name); | |
| 186 exit(1); | |
| 187 } | |
| 188 } | |
| 189 else { | |
| 190 fprintf(stderr, "%s: signature file not specified, use -s file option\n", progname); | |
| 191 exit(1); | |
| 192 } | |
| 193 | |
| 194 watermark = malloc(n * sizeof(double)); | |
| 195 for (i = 0; i < n; i++) | |
| 196 fscanf(sig, "%lf\n", &watermark[i]); | |
| 197 fclose(sig); | |
| 198 | |
| 199 pgm_readpgminit(in, &cols, &rows, &maxval, &format); | |
| 200 image = pgm_allocarray(cols, rows); | |
| 201 for (row = 0; row < rows; row++) | |
| 202 pgm_readpgmrow(in, image[row], cols, maxval, format); | |
| 203 fclose(in); | |
| 204 | |
| 205 // complete decomposition | |
| 206 levels = find_deepest_level(cols, rows) - 1; | |
| 207 if (level > levels) { | |
| 208 fprintf(stderr, "%s: decomposition level %d not possible (max. %d), image size is %d x %d\n", progname, level, levels, cols, rows); | |
| 209 exit(1); | |
| 210 } | |
| 211 | |
| 212 // wavelet transform | |
| 213 init_dwt(cols, rows, filter_name, filter, level, method); | |
| 214 #ifdef POLLEN_STUFF | |
| 3 | 215 #include "pollen_stuff.c" |
| 0 | 216 #endif |
| 217 #ifdef PARAM_STUFF | |
| 3 | 218 #include "param_stuff.c" |
| 0 | 219 #endif |
| 220 | |
| 221 dwts = fdwt(image); | |
| 222 | |
| 223 p = dwts; | |
| 224 while (p->coarse) { | |
| 225 | |
| 226 mark_subband(p->horizontal, HORIZONTAL, alpha, watermark, n, verbose); | |
| 227 mark_subband(p->vertical, VERTICAL, alpha, watermark, n, verbose); | |
| 228 mark_subband(p->diagonal, DIAGONAL, alpha, watermark, n, verbose); | |
| 229 | |
| 230 p = p->coarse; | |
| 231 } | |
| 232 | |
| 233 free(watermark); | |
| 234 idwt(dwts, image); | |
| 235 | |
| 236 pgm_writepgminit(out, cols, rows, maxval, 0); | |
| 237 for (row = 0; row < rows; row++) | |
| 238 pgm_writepgmrow(out, image[row], cols, maxval, 0); | |
| 239 fclose(out); | |
| 240 | |
| 241 pgm_freearray(image, rows); | |
| 242 | |
| 243 exit(0); | |
| 244 } |