Mercurial > hg > wm
annotate Meerwald/wm_kund_e.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 |
|---|---|
| 3 | 1 #include "wm.h" |
| 2 #include "signature.h" | |
| 3 #include "wm_dwt.h" | |
| 4 #include "pgm.h" | |
| 5 | |
| 6 char *progname; | |
| 7 | |
| 8 void usage(void) { | |
| 9 fprintf(stderr, "usage: %s [-e n] [-f n] [-F n] [-h] [-o file] [-q n] [-v n] -s file file\n\n", progname); | |
| 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-o file\t\toutput (watermarked) file\n"); | |
| 15 fprintf(stderr, "\t-q n\t\tquantization/quality factor\n"); | |
| 16 fprintf(stderr, "\t-s file\t\tsignature to embed in input image\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 *sig = NULL; | |
| 26 | |
| 27 char output_name[MAXPATHLEN] = "(stdout)"; | |
| 28 char input_name[MAXPATHLEN] = "(stdin)"; | |
| 29 char signature_name[MAXPATHLEN]; | |
| 30 | |
| 31 int c; | |
| 32 int row, col; | |
| 33 | |
| 34 int n; | |
| 35 | |
| 36 double quality = 0.0; | |
| 37 | |
| 38 int filter = 0; | |
| 39 int method = -1; | |
| 40 int level = 0; | |
| 41 char filter_name[MAXPATHLEN] = ""; | |
| 42 | |
| 43 int seed; | |
| 44 int verbose = 0; | |
| 45 | |
| 46 gray **image; | |
| 47 Image_tree dwts; | |
| 48 | |
| 49 gray maxval; | |
| 50 int rows, cols, colors, format; | |
| 51 | |
| 52 progname = argv[0]; | |
| 53 | |
| 54 pgm_init(&argc, argv); | |
| 55 | |
| 56 #ifdef __EMX__ | |
| 57 _fsetmode(in, "b"); | |
| 58 _fsetmode(out, "b"); | |
| 59 #endif | |
| 60 | |
| 61 while ((c = getopt(argc, argv, "e:f:F:h?l:o:q:s:v:")) != EOF) { | |
| 62 switch (c) { | |
| 63 case 'e': | |
| 64 method = atoi(optarg); | |
| 65 if (method < 0) { | |
| 66 fprintf(stderr, "%s: wavelet filtering method %d out of range\n", progname, method); | |
| 67 exit(1); | |
| 68 } | |
| 69 break; | |
| 70 case 'f': | |
| 71 filter = atoi(optarg); | |
| 72 if (filter <= 0) { | |
| 73 fprintf(stderr, "%s: filter number %d out of range\n", progname, filter); | |
| 74 exit(1); | |
| 75 } | |
| 76 break; | |
| 77 case 'F': | |
| 78 strcpy(filter_name, optarg); | |
| 79 break; | |
| 80 case 'h': | |
| 81 case '?': | |
| 82 usage(); | |
| 83 break; | |
| 84 case 'l': | |
| 85 level = atoi(optarg); | |
| 86 if (level < 1) { | |
| 87 fprintf(stderr, "%s: embedding level out of range\n", progname); | |
| 88 exit(1); | |
| 89 } | |
| 90 break; | |
| 91 case 'o': | |
| 92 if ((out = fopen(optarg, "wb")) == NULL) { | |
| 93 fprintf(stderr, "%s: unable to open output file %s\n", progname, optarg); | |
| 94 exit(1); | |
| 95 } | |
| 96 strcpy(output_name, optarg); | |
| 97 break; | |
| 98 case 'q': | |
| 99 quality = atoi(optarg); | |
| 100 if (quality <= 0) { | |
| 101 fprintf(stderr, "%s: quality factor %d out of range\n", progname, quality); | |
| 102 exit(1); | |
| 103 } | |
| 104 break; | |
| 105 case 's': | |
| 106 if ((sig = fopen(optarg, "r")) == NULL) { | |
| 107 fprintf(stderr, "%s: unable to open signature file %s\n", progname, optarg); | |
| 108 exit(1); | |
| 109 } | |
| 110 strcpy(signature_name, optarg); | |
| 111 break; | |
| 112 case 'v': | |
| 113 verbose = atoi(optarg); | |
| 114 if (verbose < 0) { | |
| 115 fprintf(stderr, "%s: verbosity level %d out of range\n", progname, verbose); | |
| 116 exit(1); | |
| 117 } | |
| 118 break; | |
| 119 } | |
| 120 } | |
| 121 | |
| 122 argc -= optind; | |
| 123 argv += optind; | |
| 124 | |
| 125 if (argc > 1) { | |
| 126 usage(); | |
| 127 exit(1); | |
| 128 } | |
| 129 | |
| 130 if (argc == 1 && *argv[0] != '-') | |
| 131 if ((in = fopen(argv[0], "rb")) == NULL) { | |
| 132 fprintf(stderr, "%s: unable to open input file %s\n", progname, argv[0]); | |
| 133 exit(1); | |
| 134 } | |
| 135 else | |
| 136 strcpy(input_name, argv[0]); | |
| 137 | |
| 138 if (sig) { | |
| 139 char line[32]; | |
| 140 fgets(line, sizeof(line), sig); | |
| 141 if (strspn(line, "KDSG") >= 4) { | |
| 142 fscanf(sig, "%d\n", &n); | |
| 143 if (quality == 0.0) | |
| 144 fscanf(sig, "%lf\n", &quality); | |
| 145 else | |
|
16
4987db85cfae
fix another scanf() warning
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
15
diff
changeset
|
146 fscanf(sig, "%*f\n"); |
| 3 | 147 if (method < 0) |
| 148 fscanf(sig, "%d\n", &method); | |
| 149 else | |
| 150 fscanf(sig, "%*d\n"); | |
| 151 if (filter == 0) | |
| 152 fscanf(sig, "%d\n", &filter); | |
| 153 else | |
| 154 fscanf(sig, "%*d\n"); | |
| 155 if (!strcmp(filter_name, "")) | |
| 15 | 156 fscanf(sig, "%[^\n\r]\n", filter_name); |
| 3 | 157 else |
| 158 fscanf(sig, "%*[^\n\r]\n"); | |
| 159 if (level == 0) | |
| 160 fscanf(sig, "%d\n", &level); | |
| 161 else | |
| 162 fscanf(sig, "%*d\n"); | |
| 163 fscanf(sig, "%d\n", &seed); | |
| 164 srandom(seed); | |
| 165 n_signature = NBITSTOBYTES(nbit_signature); | |
| 166 fread(signature, sizeof(char), n_signature, sig); | |
| 167 fscanf(sig, "\n"); | |
| 168 } | |
| 169 else { | |
| 170 fprintf(stderr, "%s: invalid signature file %s\n", progname, signature_name); | |
| 171 exit(1); | |
| 172 } | |
| 173 fclose(sig); | |
| 174 } | |
| 175 else { | |
| 176 fprintf(stderr, "%s: signature file not specified, use -s file option\n", progname); | |
| 177 exit(1); | |
| 178 } | |
| 179 | |
| 180 pgm_readpgminit(in, &cols, &rows, &maxval, &format); | |
| 181 | |
| 182 image = pgm_allocarray(cols, rows); | |
| 183 | |
| 184 for (row = 0; row < rows; row++) | |
| 185 pgm_readpgmrow(in, image[row], cols, maxval, format); | |
| 186 | |
| 187 fclose(in); | |
| 188 | |
| 189 // check watermark dimensions and decomposition level | |
| 190 | |
| 191 | |
| 192 // decomposition of image | |
| 193 init_dwt(cols, rows, filter_name, filter, level, method); | |
| 194 #ifdef POLLEN_STUFF | |
| 195 { | |
| 196 double alpha, beta; | |
| 197 char *alpha_str = getenv("POLLEN_ALPHA"), *beta_str = getenv("POLLEN_BETA"); | |
| 198 | |
| 199 if (alpha_str && beta_str) { | |
| 200 alpha = atof(alpha_str); | |
| 201 beta = atof(beta_str); | |
| 202 | |
| 203 if (alpha < -M_PI || alpha >= M_PI) { | |
| 204 fprintf(stderr, "%s: pollen - alpha %f out of range\n", progname, alpha); | |
| 205 exit(1); | |
| 206 } | |
| 207 | |
| 208 if (beta < -M_PI || beta >= M_PI) { | |
| 209 fprintf(stderr, "%s: pollen - beta %f out of range\n", progname, beta); | |
| 210 exit(1); | |
| 211 } | |
| 212 | |
| 213 if (verbose > 7) | |
| 214 fprintf(stderr, "%s: pollen - alpha %f, beta %f\n", progname, alpha, beta); | |
| 215 | |
| 216 dwt_pollen_filter(alpha, beta); | |
| 217 } | |
| 218 } | |
| 219 #endif | |
| 220 | |
| 221 dwts = fdwt(image); | |
| 222 | |
| 223 // create 'image' from binary watermark | |
| 224 | |
| 225 // decomposition of watermark | |
| 226 init_dwt(cols, rows, filter_name, filter, 1, method); | |
| 227 // dwts = fdwt(watermark); | |
| 228 | |
| 229 // calculate mean value of image and set alpha | |
| 230 | |
| 231 // setup of contrast sensitivity matrix | |
| 232 | |
| 233 // segment detail images at each level | |
| 234 | |
| 235 // calculate DFT of each segment | |
| 236 | |
| 237 // compute salience for each segment | |
| 238 | |
| 239 // calculate gamma or each detail image | |
| 240 | |
| 241 // embed watermark | |
| 242 | |
| 243 // reconstruction of watermarked image | |
| 244 | |
| 245 idwt(dwts, image); | |
| 246 | |
| 247 pgm_writepgminit(out, cols, rows, maxval, 0); | |
| 248 | |
| 249 for (row = 0; row < rows; row++) | |
| 250 pgm_writepgmrow(out, image[row], cols, maxval, 0); | |
| 251 | |
| 252 fclose(out); | |
| 253 | |
| 254 pgm_freearray(image, rows); | |
| 255 | |
| 256 exit(0); | |
| 257 } |