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comparison Meerwald-dir/cmp_dwt.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/cmp_dwt.c@f83ef905a63d
children
comparison
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23:71dd4b96221b 24:9f20bce6184e
1 #include "wm.h"
2 #include "dwt.h"
3 #include "coeff.h"
4 #include "gray.h"
5 #include "netpbm/pgm.h"
6 #include "dwt_util.h"
7
8 char *progname;
9
10 void usage(void) {
11 fprintf(stderr, "usage: %s [-e n] [-f n] [-F file] [-h] [-l n] [-o file] [-pP] [-s name,..] -i file file\n\n", progname);
12 fprintf(stderr, "\t-e n\t\twavelet filtering method (default: 2)\n");
13 fprintf(stderr, "\t-f n\t\tfilter number (default: 2)\n");
14 fprintf(stderr, "\t-F file\t\tfilter definition file (default: filter.dat\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\tmax. decomposition level (default: 0 = max)\n");
18 fprintf(stderr, "\t-m n\t\tmultiplication factor (default: 0 = auto)\n");
19 fprintf(stderr, "\t-o file\t\toutput file\n");
20 fprintf(stderr, "\t-p\t\tprint PSNR, RMS and MSE\n");
21 fprintf(stderr, "\t-P\t\tonly print PSNR, RMS and MSE, no difference image\n");
22 fprintf(stderr, "\t-q\t\tprint PSNR, RMS and MSE per subband\n");
23 fprintf(stderr, "\t-s name,...\tsubband/level (default: all subbands)\n");
24 fprintf(stderr, "\t-v n\t\tverbosity level\n");
25 exit(0);
26 }
27
28 void process_subband_var(gray **output, int cols, int rows, Image_tree p, Image_tree q, int type, double min, double max, gray maxval) {
29 int col, row, startcol, startrow;
30
31 if (!p || !q) return;
32
33 calc_subband_location(cols, rows, type, p->level, &startcol, &startrow);
34
35 for (row = 0; row < p->image->height; row++)
36 for (col = 0; col < p->image->width; col++) {
37 double diff = fabs(get_pixel(p->image, col, row) - get_pixel(q->image, col, row));
38 output[startrow + row][startcol + col] = PIXELRANGE((double) (diff - min) / (double) (max - min) * maxval);
39 }
40 }
41
42 void process_subband_fixed(gray **output, int cols, int rows, Image_tree p, Image_tree q, int type, double m) {
43 int col, row, startcol, startrow;
44
45 if (!p || !q) return;
46
47 calc_subband_location(cols, rows, type, p->level, &startcol, &startrow);
48
49 for (row = 0; row < p->image->height; row++)
50 for (col = 0; col < p->image->width; col++) {
51 double diff = fabs(get_pixel(p->image, col, row) - get_pixel(q->image, col, row));
52 output[startrow + row][startcol + col] = PIXELRANGE(diff * m);
53 }
54 }
55
56 void print_subband_psnr(int type, int level, double error, int cols, int rows, double min, double max, FILE *print) {
57 double mse = error / (double) (cols * rows);
58 double rmse = sqrt(mse);
59 double psnr = 20.0 * log(255.0 / rmse) / log(10.0);
60 int startcol, startrow;
61
62 calc_subband_location(cols << level, rows << level, type, level, &startcol, &startrow);
63 fprintf(print, "%s%d (%d x %d) at %d x %d\n", subband_name(type), level, cols, rows, startcol, startrow);
64 if (mse > 0.0)
65 fprintf(print, " PSNR: %lf dB\n", psnr);
66 else
67 fprintf(print, " PSNR: inf\n");
68 fprintf(print, " RMS: %lf\n", rmse);
69 fprintf(print, " MSE: %lf\n", mse);
70 fprintf(print, " dmin, dmax: %lf, %lf\n", min, max);
71 }
72
73 int main(int argc, char *argv[]) {
74 FILE *in = stdin;
75 FILE *out = stdout;
76 FILE *orig = NULL;
77 FILE *print;
78
79 gray **input_image;
80 gray **orig_image;
81 Image_tree input_dwts, p;
82 Image_tree orig_dwts, q;
83 gray **output;
84
85 char output_name[MAXPATHLEN] = "(stdout)";
86 char input_name[MAXPATHLEN] = "(stdin)";
87 char orig_name[MAXPATHLEN];
88 char *subband_list = NULL;
89
90 int in_cols, in_rows, in_format;
91 gray in_maxval;
92 int orig_cols, orig_rows, orig_format;
93 gray orig_maxval;
94 int cols, rows, format;
95 gray maxval;
96 int row;
97
98 int no_orig = 0;
99 int m = 0;
100 int c;
101 int maxlevel = 0;
102
103 int filter = 1;
104 int method = 2;
105 int levels;
106 char filter_name[MAXPATHLEN] = "filter.dat";
107
108 double error = 0.0;
109 int print_psnr = 0;
110 int print_psnr_subband = 0;
111 int print_psnr_only = 0;
112
113 double min, max;
114
115 int verbose = 0;
116
117 progname = argv[0];
118
119 pgm_init(&argc, argv); wm_init();
120
121 while ((c = getopt(argc, argv, "e:f:F:h?i:l:m:o:pPqs:v:")) != EOF) {
122 switch (c) {
123 case 'h':
124 case '?':
125 usage();
126 break;
127 case 'e':
128 method = atoi(optarg);
129 if (method < 0) {
130 fprintf(stderr, "%s: wavelet filtering method %d out of range\n", progname, method);
131 exit(1);
132 }
133 break;
134 case 'f':
135 filter = atoi(optarg);
136 if (filter <= 0) {
137 fprintf(stderr, "%s: filter number %d out of range\n", progname, filter);
138 exit(1);
139 }
140 break;
141 case 'F':
142 strcpy(filter_name, optarg);
143 break;
144 case 'i':
145 if (!strcmp(optarg, "-")) {
146 no_orig = 1;
147 strcpy(orig_name, "(zero)");
148 }
149 else {
150 if ((orig = fopen(optarg, "rb")) == NULL) {
151 fprintf(stderr, "%s: unable to open original image file %s\n", progname, optarg);
152 exit(1);
153 }
154 strcpy(orig_name, optarg);
155 }
156 break;
157 case 'l':
158 maxlevel = atoi(optarg);
159 if (maxlevel < 0) {
160 fprintf(stderr, "%s: decomposition level %d out of range\n", progname, maxlevel);
161 exit(1);
162 }
163 break;
164 case 'm':
165 m = atoi(optarg);
166 if (m < -1) {
167 fprintf(stderr, "%s: multiplication factor %d out of range\n", progname, m);
168 exit(1);
169 }
170 break;
171 case 'o':
172 if ((out = fopen(optarg, "wb")) == NULL) {
173 fprintf(stderr, "%s: unable to open output file %s\n", progname, optarg);
174 exit(1);
175 }
176 strcpy(output_name, optarg);
177 break;
178 case 'p':
179 print_psnr = 1;
180 break;
181 case 'P':
182 print_psnr_only = 1;
183 break;
184 case 'q':
185 print_psnr = 1;
186 print_psnr_subband = 1;
187 case 's':
188 subband_list = optarg;
189 break;
190 case 'v':
191 verbose = atoi(optarg);
192 if (verbose < 0) {
193 fprintf(stderr, "%s: verbosity level %d out of range\n", progname, verbose);
194 exit(1);
195 }
196 break;
197
198 }
199 }
200
201 argc -= optind;
202 argv += optind;
203
204 if (argc > 1) {
205 usage();
206 exit(1);
207 }
208
209 print = print_psnr_only ? out : stderr;
210
211 if (argc == 1 && *argv[0] != '-') {
212 if ((in = fopen(argv[0], "rb")) == NULL) {
213 fprintf(stderr, "%s: unable to open input file %s\n", progname, argv[0]);
214 exit(1);
215 }
216 else
217 strcpy(input_name, argv[0]);
218 }
219
220 if (!orig && !no_orig) {
221 fprintf(stderr, "%s: original image file not specified, using zero image\n", progname);
222 strcpy(orig_name, "(zero)");
223 no_orig = 1;
224 }
225
226 pgm_readpgminit(in, &in_cols, &in_rows, &in_maxval, &in_format);
227
228 if (!no_orig) {
229 pgm_readpgminit(orig, &orig_cols, &orig_rows, &orig_maxval, &orig_format);
230 if (in_cols != orig_cols || in_rows != orig_rows) {
231 fprintf(stderr, "%s: input image %s does not match dimensions of original image %s\n", progname, input_name, orig_name);
232 exit(1);
233 }
234 }
235
236 cols = in_cols;
237 rows = in_rows;
238 format = in_format;
239 maxval = in_maxval;
240
241 input_image = pgm_allocarray(cols, rows);
242 orig_image = pgm_allocarray(cols, rows);
243
244 output = alloc_grays(cols, rows);
245
246 if (no_orig) {
247 for (row = 0; row < rows; row++) {
248 pgm_readpgmrow(in, input_image[row], cols, maxval, format);
249 bzero(orig_image[row], sizeof(gray) * cols);
250 }
251 }
252 else {
253 for (row = 0; row < rows; row++) {
254 pgm_readpgmrow(in, input_image[row], in_cols, in_maxval, in_format);
255 pgm_readpgmrow(orig, orig_image[row], orig_cols, orig_maxval, orig_format);
256 }
257 }
258
259 fclose(in);
260 if (!no_orig)
261 fclose(orig);
262
263 // complete decomposition
264 levels = find_deepest_level(cols, rows) - 1;
265 if (!maxlevel) maxlevel = levels;
266 if (maxlevel > levels) {
267 fprintf(stderr, "%s: decomposition level %d not possible (max. %d), image size is %d x %d\n", progname, maxlevel, levels, cols, rows);
268 exit(1);
269 }
270
271 init_dwt(cols, rows, filter_name, filter, maxlevel, method);
272
273 input_dwts = fdwt(input_image);
274 orig_dwts = fdwt(orig_image);
275
276 p = input_dwts;
277 q = orig_dwts;
278 min = 10000000.0;
279 max = 0.0;
280 error = 0.0;
281 while (p->coarse && q->coarse) {
282 double localmin, localmax, localerror;
283
284 if (subband_in_list(subband_list, HORIZONTAL, p->horizontal->level)) {
285 calc_subband(p->horizontal, q->horizontal, HORIZONTAL, &localmin, &localmax, &localerror);
286 if (m == -1) process_subband_var(output, cols, rows, p->horizontal, q->horizontal, HORIZONTAL, localmin, localmax, maxval);
287 if (localmin < min) min = localmin;
288 if (localmax > max) max = localmax;
289 error += localerror;
290 if (print_psnr_subband)
291 print_subband_psnr(HORIZONTAL, p->horizontal->level, error, p->horizontal->image->width, p->horizontal->image->height, localmin, localmax, print);
292 }
293 else if (verbose > 5)
294 fprintf(stderr, "%s: subband %s%d skipped\n", progname, subband_name(HORIZONTAL), p->horizontal->level);
295
296 if (subband_in_list(subband_list, VERTICAL, p->vertical->level)) {
297 calc_subband(p->vertical, q->vertical, VERTICAL, &localmin, &localmax, &localerror);
298 if (m == -1) process_subband_var(output, cols, rows, p->vertical, q->vertical, VERTICAL, localmin, localmax, maxval);
299 if (localmin < min) min = localmin;
300 if (localmax > max) max = localmax;
301 error += localerror;
302 if (print_psnr_subband)
303 print_subband_psnr(VERTICAL, p->vertical->level, error, p->vertical->image->width, p->vertical->image->height, localmin, localmax, print);
304 }
305 else if (verbose > 5)
306 fprintf(stderr, "%s: subband %s%d skipped\n", progname, subband_name(VERTICAL), p->vertical->level);
307
308 if (subband_in_list(subband_list, DIAGONAL, p->diagonal->level)) {
309 calc_subband(p->diagonal, q->diagonal, DIAGONAL, &localmin, &localmax, &localerror);
310 if (m == -1) process_subband_var(output, cols, rows, p->diagonal, q->diagonal, DIAGONAL, localmin, localmax, maxval);
311 if (localmin < min) min = localmin;
312 if (localmax > max) max = localmax;
313 error += localerror;
314 if (print_psnr_subband)
315 print_subband_psnr(DIAGONAL, p->vertical->level, error, p->diagonal->image->width, p->diagonal->image->height, localmin, localmax, print);
316 }
317 else if (verbose > 5)
318 fprintf(stderr, "%s: subband %s%d skipped\n", progname, subband_name(DIAGONAL), p->diagonal->level);
319
320 p = p->coarse;
321 q = q->coarse;
322
323 if (!p->coarse) {
324 if (subband_in_list(subband_list, COARSE, p->level)) {
325 calc_subband(p, q, COARSE, &localmin, &localmax, &localerror);
326 if (m == -1) process_subband_var(output, cols, rows, p, q, COARSE, localmin, localmax, maxval);
327 if (localmin < min) min = localmin;
328 if (localmax > max) max = localmax;
329 error += localerror;
330 if (print_psnr_subband)
331 print_subband_psnr(COARSE, p->level, error, p->image->width, p->image->height, localmin, localmax, print);
332 }
333 else if (verbose > 5)
334 fprintf(stderr, "%s: subband %s%d skipped\n", progname, subband_name(COARSE), p->level);
335 }
336 }
337
338 p = input_dwts;
339 q = orig_dwts;
340 while (p->coarse && q->coarse) {
341 if (m > 0) {
342 process_subband_fixed(output, cols, rows, p->horizontal, q->horizontal, HORIZONTAL, m);
343 process_subband_fixed(output, cols, rows, p->vertical, q->vertical, VERTICAL, m);
344 process_subband_fixed(output, cols, rows, p->diagonal, q->diagonal, DIAGONAL, m);
345 }
346 else if (m == 0) {
347 process_subband_var(output, cols, rows, p->horizontal, q->horizontal, HORIZONTAL, min, max, maxval);
348 process_subband_var(output, cols, rows, p->vertical, q->vertical, VERTICAL, min, max, maxval);
349 process_subband_var(output, cols, rows, p->diagonal, q->diagonal, DIAGONAL, min, max, maxval);
350 }
351
352 p = p->coarse;
353 q = q->coarse;
354
355 if (!p->coarse) {
356 if (m > 0)
357 process_subband_fixed(output, cols, rows, p, q, COARSE, m);
358 else if (m == 0)
359 process_subband_var(output, cols, rows, p, q, COARSE, min, max, maxval);
360 }
361 }
362
363 if (!print_psnr_only) {
364 pgm_writepgminit(out, cols, rows, maxval, 0);
365 for (row = 0; row < rows; row++)
366 pgm_writepgmrow(out, output[row], cols, maxval, 0);
367
368 fclose(out);
369 }
370
371 pgm_freearray(input_image, rows);
372 pgm_freearray(orig_image, rows);
373 free_grays(output);
374
375 if (print_psnr || print_psnr_only) {
376 double mse = error / (double) (cols * rows);
377 double rmse = sqrt(mse);
378 double psnr = 20.0 * log(255.0 / rmse) / log(10.0);
379 if (mse > 0.0)
380 fprintf(print, "PSNR: %lf dB\n", psnr);
381 else
382 fprintf(print, "PSNR: inf\n");
383 fprintf(print, "RMS: %lf\n", rmse);
384 fprintf(print, "MSE: %lf\n", mse);
385 fprintf(print, "dmin, dmax: %lf, %lf\n", min, max);
386 }
387
388 exit(0);
389 }

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