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comparison Meerwald-dir/wm_dugad_d.c @ 24:9f20bce6184e v0.7

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move directories, support netpbm 11
author Peter Meerwald-Stadler <pmeerw@pmeerw.net>
date Fri, 20 Dec 2024 13:08:59 +0100
parents Meerwald/wm_dugad_d.c@4987db85cfae
children
comparison
equal deleted inserted replaced
23:71dd4b96221b 24:9f20bce6184e
1 #include "wm.h"
2 #include "dwt.h"
3 #include "dwt_util.h"
4 #include "netpbm/pgm.h"
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] [-n n] [-o file] [-v n] [-t n] -s file file\n\n", progname);
10 fprintf(stderr, "\t-a n\t\talpha factor\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 levels\n");
16 fprintf(stderr, "\t-n n\t\twatermark length\n");
17 fprintf(stderr, "\t-o file\t\tfile for extracted watermark\n");
18 fprintf(stderr, "\t-s file\t\toriginal signature file\n");
19 fprintf(stderr, "\t-t n\t\tdetection threshold\n");
20 fprintf(stderr, "\t-v n\t\tverbosity level\n");
21 exit(0);
22 }
23
24 void wm_subband(Image s, double *w, int n, double t2, int *m, double *z, double *v) {
25 int i;
26
27 *m = 0;
28 *z = 0.0;
29 *v = 0.0;
30 for (i = 0; i < s->width * s->height; i++)
31 if (s->data[i] > t2) {
32 (*z) += (s->data[i] * w[i % n]);
33 (*v) += fabs(s->data[i]);
34 (*m)++;
35 }
36 }
37
38 int main(int argc, char *argv[]) {
39
40 FILE *in = stdin;
41 FILE *out = stdout;
42 FILE *sig = NULL;
43
44 gray **input_image;
45
46 char signature_name[MAXPATHLEN];
47 char output_name[MAXPATHLEN] = "(stdout)";
48 char input_name[MAXPATHLEN] = "(stdin)";
49
50 int c;
51 int i;
52 int n = 0;
53 int method = -1;
54 int level = 0;
55 int filter = 0;
56 char filter_name[MAXPATHLEN] = "";
57
58 double alpha = 0.0;
59 double t2 = 0.0;
60
61 int in_rows, in_cols, in_format;
62 gray in_maxval;
63 int rows, cols;
64 int row;
65
66 double *watermark;
67
68 Image_tree dwts, s;
69
70 int verbose = 0;
71
72 progname = argv[0];
73
74 pgm_init(&argc, argv); wm_init2();
75
76 while ((c = getopt(argc, argv, "a:e:f:F:h?l:n:o:s:v:t")) != EOF) {
77 switch (c) {
78 case 'a':
79 alpha = atof(optarg);
80 if (alpha <= 0.0) {
81 fprintf(stderr, "%s: alpha factor %f out of range\n", progname, alpha);
82 exit(1);
83 }
84 break;
85 case 'e':
86 method = atoi(optarg);
87 if (method < 0) {
88 fprintf(stderr, "%s: wavelet filtering method %d out of range\n", progname, method);
89 exit(1);
90 }
91 break;
92 case 'f':
93 filter = atoi(optarg);
94 if (filter <= 0) {
95 fprintf(stderr, "%s: filter number %d out of range\n", progname, filter);
96 exit(1);
97 }
98 break;
99 case 'F':
100 strcpy(filter_name, optarg);
101 break;
102 case 'h':
103 case '?':
104 usage();
105 break;
106 case 'l':
107 level = atoi(optarg);
108 if (level <= 0) {
109 fprintf(stderr, "%s: decomposition level %d out of range\n", progname, level);
110 exit(1);
111 }
112 break;
113
114 case 'n':
115 n = atoi(optarg);
116 if (n < 1 || n > 32000) {
117 fprintf(stderr, "%s: watermark length %d out of range\n", progname, n);
118 exit(1);
119 }
120 break;
121 case 'o':
122 if ((out = fopen(optarg, "w")) == NULL) {
123 fprintf(stderr, "%s: unable to open output file %s\n", progname, optarg);
124 exit(1);
125 }
126 strcpy(output_name, optarg);
127 break;
128 case 's':
129 if ((sig = fopen(optarg, "r")) == NULL) {
130 fprintf(stderr, "%s: unable to open signature file %s\n", progname, optarg);
131 exit(1);
132 }
133 strcpy(signature_name, optarg);
134 break;
135 case 't':
136 t2 = atof(optarg);
137 if (t2 <= 0.0) {
138 fprintf(stderr, "%s: detection threshold %f out of range\n", progname, t2);
139 exit(1);
140 }
141 break;
142 case 'v':
143 verbose = atoi(optarg);
144 if (verbose < 0) {
145 fprintf(stderr, "%s: verbosity level %d out of range\n", progname, verbose);
146 exit(1);
147 }
148 break;
149 }
150 }
151
152 argc -= optind;
153 argv += optind;
154
155 if (argc > 1) {
156 usage();
157 exit(1);
158 }
159
160 if (argc == 1 && *argv[0] != '-') {
161 if ((in = fopen(argv[0], "rb")) == NULL) {
162 fprintf(stderr, "%s: unable to open input file %s\n", progname, argv[0]);
163 exit(1);
164 }
165 else
166 strcpy(input_name, argv[0]);
167 }
168
169 if (sig) {
170 char line[32];
171 fgets(line, sizeof(line), sig);
172 if (strspn(line, "DGSG") >= 4) {
173 fscanf(sig, "%d\n", &n);
174 if (level == 0)
175 fscanf(sig, "%d\n", &level);
176 else
177 fscanf(sig, "%*d\n");
178 if (alpha == 0.0)
179 fscanf(sig, "%lf\n", &alpha);
180 else
181 fscanf(sig, "%*f\n");
182 fscanf(sig, "%*f\n");
183 if (t2 == 0.0)
184 fscanf(sig, "%lf\n", &t2);
185 else
186 fscanf(sig, "%*f\n");
187 if (method < 0)
188 fscanf(sig, "%d\n", &method);
189 else
190 fscanf(sig, "%*d\n");
191 if (filter == 0)
192 fscanf(sig, "%d\n", &filter);
193 else
194 fscanf(sig, "%*d\n");
195 if (!strcmp(filter_name, ""))
196 fscanf(sig, "%[^\n\r]\n", filter_name);
197 else
198 fscanf(sig, "%*[^\n\r]\n");
199 }
200 else {
201 fprintf(stderr, "%s: invalid signature file %s\n", progname, signature_name);
202 exit(1);
203 }
204 }
205 else {
206 fprintf(stderr, "%s: signature file not specified, use -s file option\n", progname);
207 exit(1);
208 }
209
210 watermark = malloc(n * sizeof(double));
211 for (i = 0; i < n; i++)
212 fscanf(sig, "%lf\n", &watermark[i]);
213 fclose(sig);
214
215 pgm_readpgminit(in, &in_cols, &in_rows, &in_maxval, &in_format);
216
217 cols = in_cols;
218 rows = in_rows;
219
220 input_image = pgm_allocarray(in_cols, in_rows);
221
222 for (row = 0; row < in_rows; row++) {
223 pgm_readpgmrow(in, input_image[row], in_cols, in_maxval, in_format);
224 }
225
226 fclose(in);
227
228 init_dwt(cols, rows, filter_name, filter, level, method);
229 #ifdef POLLEN_STUFF
230 #include "pollen_stuff.c"
231 #endif
232 #ifdef PARAM_STUFF
233 #include "param_stuff.c"
234 #endif
235
236 dwts = fdwt(input_image);
237
238 fprintf(out, "DGWM\n");
239 fprintf(out, "%d\n", level);
240 fprintf(out, "%f\n", alpha);
241
242 for (i = 0, s = dwts; i < level; i++, s = s->coarse) {
243 int m;
244 double z, v;
245
246 wm_subband(s->horizontal->image, watermark, n, t2, &m, &z, &v);
247 fprintf(out, "%d %f %f\n", m, z, v);
248 wm_subband(s->vertical->image, watermark, n, t2, &m, &z, &v);
249 fprintf(out, "%d %f %f\n", m, z, v);
250 wm_subband(s->diagonal->image, watermark, n, t2, &m, &z, &v);
251 fprintf(out, "%d %f %f\n", m, z, v);
252 }
253
254 fclose(out);
255
256 free(watermark);
257
258 pgm_freearray(input_image, rows);
259
260 exit(0);
261 }

Repositories maintained by Peter Meerwald, pmeerw@pmeerw.net.