annotate Meerwald/wm_zhu_e.c @ 10:aa7b4c3a7313

add cmp_ppm
author Peter Meerwald <pmeerw@cosy.sbg.ac.at>
date Thu, 01 May 2008 18:15:14 +0200
parents f83ef905a63d
children ad1d224896c5
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
0
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
1 #include "wm.h"
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
2 #include "dwt.h"
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
3 #include "pgm.h"
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
4 #include "sort.h"
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
6 char *progname;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
7
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
8 void usage(void) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
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);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
10 fprintf(stderr, "\t-a n\t\talpha factor/embedding strength\n");
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
11 fprintf(stderr, "\t-e n\t\twavelet filtering method\n");
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
12 fprintf(stderr, "\t-f n\t\tfilter number\n");
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
13 fprintf(stderr, "\t-F file\t\tfilter definition file\n");
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
14 fprintf(stderr, "\t-h\t\tprint usage\n");
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
15 fprintf(stderr, "\t-l n\t\tdecomposition level\n");
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
16 fprintf(stderr, "\t-o file\t\toutput (watermarked) file\n");
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
17 fprintf(stderr, "\t-s file\t\tsignature to embed in input image\n");
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
18 fprintf(stderr, "\t-v n\t\tverbosity level\n");
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
19 exit(0);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
20 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
21
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
22 int main(int argc, char *argv[]) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
23
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
24 FILE *in = stdin;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
25 FILE *out = stdout;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
26 FILE *sig = NULL;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
27
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
28 char output_name[MAXPATHLEN] = "(stdout)";
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
29 char input_name[MAXPATHLEN] = "(stdin)";
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
30 char signature_name[MAXPATHLEN];
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
31
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
32 int i, c, w;
8
f83ef905a63d fixing many warnings
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents: 3
diff changeset
33 int row;
0
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
34
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
35 int n;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
36
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
37 double alpha = 0.0;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
38 int level = 0;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
39
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
40 int filter = 0;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
41 int method = -1;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
42 int levels;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
43 char filter_name[MAXPATHLEN] = "";
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
44
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
45 int verbose = 0;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
46
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
47 gray **image;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
48 Image_tree p, dwts;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
49
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
50 gray maxval;
8
f83ef905a63d fixing many warnings
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents: 3
diff changeset
51 int rows, cols, format;
0
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
52
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
53 double *watermark;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
54
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
55 progname = argv[0];
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
56
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
57 pgm_init(&argc, argv); wm_init();
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
58
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
59 while ((c = getopt(argc, argv, "a:e:f:F:h?o:l:s:v:")) != EOF) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
60 switch (c) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
61 case 'a':
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
62 alpha = atof(optarg);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
63 if (alpha <= 0.0) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
64 fprintf(stderr, "%s: alpha factor %f out of range\n", progname, alpha);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
65 exit(1);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
66 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
67 break;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
68 case 'l':
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
69 level = atoi(optarg);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
70 if (level <= 0) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
71 fprintf(stderr, "%s: decomposition level %d out of range\n", progname, level);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
72 exit(1);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
73 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
74 break;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
75 case 'e':
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
76 method = atoi(optarg);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
77 if (method < 0) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
78 fprintf(stderr, "%s: wavelet filtering method %d out of range\n", progname, method);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
79 exit(1);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
80 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
81 break;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
82 case 'f':
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
83 filter = atoi(optarg);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
84 if (filter <= 0) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
85 fprintf(stderr, "%s: filter number %d out of range\n", progname, filter);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
86 exit(1);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
87 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
88 break;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
89 case 'F':
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
90 strcpy(filter_name, optarg);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
91 break;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
92 case 'h':
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
93 case '?':
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
94 usage();
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
95 break;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
96 case 'o':
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
97 if ((out = fopen(optarg, "wb")) == NULL) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
98 fprintf(stderr, "%s: unable to open output file %s\n", progname, optarg);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
99 exit(1);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
100 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
101 strcpy(output_name, optarg);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
102 break;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
103 case 's':
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
104 if ((sig = fopen(optarg, "r")) == NULL) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
105 fprintf(stderr, "%s: unable to open signature file %s\n", progname, optarg);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
106 exit(1);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
107 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
108 strcpy(signature_name, optarg);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
109 break;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
110 case 'v':
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
111 verbose = atoi(optarg);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
112 if (verbose < 0) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
113 fprintf(stderr, "%s: verbosity level %d out of range\n", progname, verbose);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
114 exit(1);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
115 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
116 break;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
117 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
118 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
119
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
120 argc -= optind;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
121 argv += optind;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
122
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
123 if (argc > 1) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
124 usage();
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
125 exit(1);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
126 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
127
8
f83ef905a63d fixing many warnings
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents: 3
diff changeset
128 if (argc == 1 && *argv[0] != '-') {
0
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
129 if ((in = fopen(argv[0], "rb")) == NULL) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
130 fprintf(stderr, "%s: unable to open input file %s\n", progname, argv[0]);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
131 exit(1);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
132 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
133 else
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
134 strcpy(input_name, argv[0]);
8
f83ef905a63d fixing many warnings
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents: 3
diff changeset
135 }
f83ef905a63d fixing many warnings
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents: 3
diff changeset
136
0
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
137 if (sig) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
138 char line[32];
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
139 fgets(line, sizeof(line), sig);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
140 if (strspn(line, "ZHSG") >= 4) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
141 fscanf(sig, "%d\n", &n);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
142 if (alpha == 0.0)
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
143 fscanf(sig, "%lf\n", &alpha);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
144 else
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
145 fscanf(sig, "%*lf\n");
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
146 if (level == 0)
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
147 fscanf(sig, "%d\n", &level);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
148 else
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
149 fscanf(sig, "%*d\n");
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
150 if (method < 0)
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
151 fscanf(sig, "%d\n", &method);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
152 else
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
153 fscanf(sig, "%*d\n");
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
154 if (filter == 0)
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
155 fscanf(sig, "%d\n", &filter);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
156 else
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
157 fscanf(sig, "%*d\n");
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
158 if (!strcmp(filter_name, ""))
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
159 fscanf(sig, "%[^\n\r]\n", &filter_name);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
160 else
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
161 fscanf(sig, "%*[^\n\r]\n");
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
162 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
163 else {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
164 fprintf(stderr, "%s: invalid signature file %s\n", progname, signature_name);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
165 exit(1);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
166 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
167 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
168 else {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
169 fprintf(stderr, "%s: signature file not specified, use -s file option\n", progname);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
170 exit(1);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
171 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
172
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
173 watermark = malloc(n * sizeof(double));
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
174 for (i = 0; i < n; i++)
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
175 fscanf(sig, "%lf\n", &watermark[i]);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
176 fclose(sig);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
177
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
178 pgm_readpgminit(in, &cols, &rows, &maxval, &format);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
179 image = pgm_allocarray(cols, rows);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
180 for (row = 0; row < rows; row++)
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
181 pgm_readpgmrow(in, image[row], cols, maxval, format);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
182 fclose(in);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
183
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
184 // complete decomposition
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
185 levels = find_deepest_level(cols, rows) - 1;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
186 if (level > levels) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
187 fprintf(stderr, "%s: decomposition level %d not possible (max. %d), image size is %d x %d\n", progname, level, levels, cols, rows);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
188 exit(1);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
189 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
190
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
191 // wavelet transform
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
192 init_dwt(cols, rows, filter_name, filter, level, method);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
193 #ifdef POLLEN_STUFF
3
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents: 0
diff changeset
194 #include "pollen_stuff.c"
0
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
195 #endif
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
196 #ifdef PARAM_STUFF
3
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents: 0
diff changeset
197 #include "param_stuff.c"
0
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
198 #endif
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
199
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
200 dwts = fdwt(image);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
201
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
202 p = dwts;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
203 while (p->coarse) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
204 double *collected_coeffs, *largest;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
205 int subband_size = p->horizontal->image->size;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
206 int maxselect = MIN(3 * subband_size, n + 1);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
207 double threshold;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
208
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
209 // allocate memory for coefficient vector
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
210 collected_coeffs = malloc(3 * subband_size * sizeof(double));
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
211 if (!collected_coeffs) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
212 fprintf(stderr, "%s: malloc() failed\n", progname);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
213 exit(1);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
214 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
215
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
216 // collect coefficients from all subbands of one level into one vector
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
217 for (i = 0; i < subband_size; i++) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
218 collected_coeffs[3 * i + 0] = p->horizontal->image->data[i];
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
219 collected_coeffs[3 * i + 1] = p->vertical->image->data[i];
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
220 collected_coeffs[3 * i + 2] = p->diagonal->image->data[i];
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
221 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
222
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
223 // allocate memory for largest coefficients
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
224 largest = malloc(maxselect * sizeof(double));
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
225 if (!largest) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
226 fprintf(stderr, "%s: malloc() failed\n", progname);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
227 exit(1);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
228 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
229
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
230 // select largest coefficients (involves sorting)
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
231 select_largest_coeffs(collected_coeffs, 3 * subband_size, maxselect, largest);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
232 // threshold is the smallest of the largest coefficients
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
233 threshold = largest[0];
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
234 free(largest);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
235 free(collected_coeffs);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
236
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
237 w = 0;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
238 for (i = 0; i < subband_size && w < n; i++) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
239 if (p->horizontal->image->data[i] > threshold)
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
240 p->horizontal->image->data[i] *= (1.0 + alpha * watermark[w++]);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
241 if (p->vertical->image->data[i] > threshold)
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
242 p->vertical->image->data[i] *= (1.0 + alpha * watermark[w++]);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
243 if (p->diagonal->image->data[i] > threshold)
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
244 p->diagonal->image->data[i] *= (1.0 + alpha * watermark[w++]);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
245 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
246
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
247 p = p->coarse;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
248 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
249
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
250 free(watermark);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
251 idwt(dwts, image);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
252
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
253 pgm_writepgminit(out, cols, rows, maxval, 0);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
254 for (row = 0; row < rows; row++)
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
255 pgm_writepgmrow(out, image[row], cols, maxval, 0);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
256 fclose(out);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
257
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
258 pgm_freearray(image, rows);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
259
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
260 exit(0);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
261 }

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