|
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
|
|
|
172 fscanf(sig, "%*lf\n");
|
|
|
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, ""))
|
|
|
186 fscanf(sig, "%[^\n\r]\n", &filter_name);
|
|
|
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 }
|
