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comparison Meerwald/cmp_pgm.c @ 0:be303a3f5ea8

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import
author Peter Meerwald <pmeerw@cosy.sbg.ac.at>
date Sun, 12 Aug 2007 13:14:34 +0200
parents
children acb6967ee76d
comparison
equal deleted inserted replaced
-1:000000000000 0:be303a3f5ea8
1 #include "wm.h"
2 #include "pgm.h"
3
4 char *progname;
5
6 void usage(void) {
7 fprintf(stderr, "usage: %s [-C] [-h] [-m n] [-o file] [-pP] [-r file] -i file file\n\n", progname);
8 fprintf(stderr, "\t-C\t\tprint PSNR value only\n");
9 fprintf(stderr, "\t-h\t\tprint usage\n");
10 fprintf(stderr, "\t-i file\t\toriginal image file\n");
11 fprintf(stderr, "\t-m n\t\tmultiplication factor (default auto)\n");
12 fprintf(stderr, "\t-o file\t\toutput file for difference image\n");
13 fprintf(stderr, "\t-p\t\tprint PSNR, RMS and MSE\n");
14 fprintf(stderr, "\t-P\t\tonly print PSNR, RMS and MSE, no difference image\n");
15 fprintf(stderr, "\t-r file\t\tROI (region-of-interest) mask (default none)\n");
16 exit(0);
17 }
18
19 int main(int argc, char *argv[]) {
20
21 FILE *in = stdin;
22 FILE *out = stdout;
23 FILE *orig = NULL;
24 FILE *roi = NULL;
25
26 gray **input_image;
27 gray **orig_image;
28 gray **roi_image;
29
30 char output_name[MAXPATHLEN] = "(stdout)";
31 char input_name[MAXPATHLEN] = "(stdin)";
32 char orig_name[MAXPATHLEN];
33 char roi_name[MAXPATHLEN];
34
35 int in_cols, in_rows, in_format;
36 gray in_maxval;
37 int roi_cols, roi_rows, roi_format;
38 gray roi_maxval;
39 int orig_cols, orig_rows, orig_format;
40 gray orig_maxval;
41 int cols, rows, format;
42 gray maxval;
43 int col, row;
44
45 int roisize = 0;
46
47 int i;
48 int c;
49
50 int m = 0;
51 int min, max;
52
53 int print_psnr = 0;
54 int print_psnr_only = 0;
55 int print_psnr_value_only = 0;
56 double error = 0.0;
57
58 progname = argv[0];
59
60 pgm_init(&argc, argv); wm_init();
61
62 while ((c = getopt(argc, argv, "h?i:m:o:r:pPC")) != EOF) {
63 switch (c) {
64 case 'h':
65 case '?':
66 usage();
67 break;
68 case 'i':
69 if ((orig = fopen(optarg, "rb")) == NULL) {
70 fprintf(stderr, "%s: unable to open original image file %s\n", progname, optarg);
71 exit(1);
72 }
73 strcpy(orig_name, optarg);
74 break;
75 case 'r':
76 if ((roi = fopen(optarg, "rb")) == NULL) {
77 fprintf(stderr, "%s: unable to open ROI image file %s\n", progname, optarg);
78 exit(1);
79 }
80 strcpy(roi_name, optarg);
81 break;
82 case 'm':
83 m = atoi(optarg);
84 if (m <= 0) {
85 fprintf(stderr, "%s: multiplication factor %d out of range\n", progname, m);
86 exit(1);
87 }
88 break;
89 case 'o':
90 if ((out = fopen(optarg, "wb")) == NULL) {
91 fprintf(stderr, "%s: unable to open output file %s\n", progname, optarg);
92 exit(1);
93 }
94 strcpy(output_name, optarg);
95 break;
96 case 'p':
97 print_psnr = 1;
98 break;
99 case 'P':
100 print_psnr_only = 1;
101 break;
102 case 'C':
103 print_psnr_value_only = 1;
104 print_psnr_only = 1;
105 break;
106 }
107 }
108
109 argc -= optind;
110 argv += optind;
111
112 if (argc > 1) {
113 usage();
114 exit(1);
115 }
116
117 if (argc == 1 && *argv[0] != '-')
118 if ((in = fopen(argv[0], "rb")) == NULL) {
119 fprintf(stderr, "%s: unable to open input file %s\n", progname, argv[0]);
120 exit(1);
121 }
122 else
123 strcpy(input_name, argv[0]);
124
125 if (!orig) {
126 fprintf(stderr, "%s: original image file not specified, use -i file option\n", progname);
127 exit(1);
128 }
129
130 pgm_readpgminit(in, &in_cols, &in_rows, &in_maxval, &in_format);
131
132 if (orig) {
133 pgm_readpgminit(orig, &orig_cols, &orig_rows, &orig_maxval, &orig_format);
134
135 if (in_cols != orig_cols || in_rows != orig_rows) {
136 fprintf(stderr, "%s: input image %s does not match dimensions of original image %s\n", progname, input_name, orig_name);
137 exit(1);
138 }
139 }
140
141 if (roi) {
142 pgm_readpgminit(roi, &roi_cols, &roi_rows, &roi_maxval, &roi_format);
143
144 if (in_cols != roi_cols || in_rows != roi_rows) {
145 fprintf(stderr, "%s: input image %s does not match dimensions of ROI image %s\n", progname, input_name, roi_name);
146 exit(1);
147 }
148 }
149
150 cols = in_cols;
151 rows = in_rows;
152 format = in_format;
153 maxval = in_maxval;
154
155 input_image = pgm_allocarray(cols, rows);
156 orig_image = pgm_allocarray(cols, rows);
157 roi_image = pgm_allocarray(cols, rows);
158
159 for (row = 0; row < rows; row++) {
160 pgm_readpgmrow(in, input_image[row], cols, in_maxval, in_format);
161 if (orig)
162 pgm_readpgmrow(orig, orig_image[row], cols, orig_maxval, orig_format);
163 else
164 memset(orig_image[row], cols, 0);
165 if (roi)
166 pgm_readpgmrow(roi, roi_image[row], cols, roi_maxval, roi_format);
167 else
168 memset(roi_image[row], cols, PGM_MAXMAXVAL);
169 }
170
171 fclose(in);
172 if (orig) fclose(orig);
173 if (roi) fclose(roi);
174
175 max = 0;
176 min = PGM_MAXMAXVAL;
177
178 for (row = 0; row < rows; row++) {
179 gray *pi = input_image[row];
180 gray *po = orig_image[row];
181 gray *pr = roi_image[row];
182
183 for (col = 0; col < cols; col++) {
184 int diff = abs(*pi - *po);
185 int inroi = (!roi || *pr > 0);
186
187 pi++;
188 po++;
189 pr++;
190
191 if (roi && !inroi)
192 continue;
193
194 roisize++;
195
196 error += sqr(diff);
197 if (diff < min) min = diff;
198 if (diff > max) max = diff;
199
200 }
201 }
202
203 for (row = 0; row < rows; row++) {
204 gray *pi = input_image[row];
205 gray *po = orig_image[row];
206 gray *pr = roi_image[row];
207
208 for (col = 0; col < cols; col++) {
209 int diff = abs(*pi - *po);
210 int inroi = (!roi || *pr > 0);
211
212 if (!inroi) {
213 *pi = 0;
214 }
215 else {
216 if (m > 0)
217 *pi = PIXELRANGE(diff * m);
218 else
219 *pi = PIXELRANGE((double) (diff - min) / (double) (max - min) * maxval);
220 }
221
222 pi++;
223 po++;
224 pr++;
225
226 }
227 }
228
229 if (!print_psnr_only) {
230 pgm_writepgminit(out, cols, rows, maxval, 0);
231 for (row = 0; row < rows; row++)
232 pgm_writepgmrow(out, input_image[row], cols, maxval, 0);
233
234 fclose(out);
235 }
236
237 pgm_freearray(input_image, rows);
238 pgm_freearray(orig_image, rows);
239 pgm_freearray(roi_image, rows);
240
241 if (print_psnr || print_psnr_only) {
242 double mse = (roisize) ? error / (double) roisize : 0;
243 double rmse = sqrt(mse);
244 double psnr = (rmse) ? 20.0 * log(255.0 / rmse) / log(10.0) : 0;
245 FILE *print = print_psnr_only ? out : stderr;
246 if (!print_psnr_value_only) {
247 if (roi)
248 fprintf(print, "ROI size: %d\n", roisize);
249 if (mse > 0.0)
250 fprintf(print, "PSNR: %lf dB\n", psnr);
251 else
252 fprintf(print, "PSNR: inf\n");
253 fprintf(print, "RMSE: %lf\n", rmse);
254 fprintf(print, "MSE: %lf\n", mse);
255 fprintf(print, "dmin, dmax: %d, %d\n", min, max);
256 }
257 else
258 fprintf(print, "%lf\n", mse > 0.0 ? psnr : 100.0);
259 }
260
261 exit(0);
262 }

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