1 /*
2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3 % %
4 % %
5 % %
6 % CCCC OOO M M PPPP AAA RRRR EEEEE %
7 % C O O MM MM P P A A R R E %
8 % C O O M M M PPPP AAAAA RRRR EEE %
9 % C O O M M P A A R R E %
10 % CCCC OOO M M P A A R R EEEEE %
11 % %
12 % %
13 % Image Comparison Methods %
14 % %
15 % Software Design %
16 % Cristy %
17 % December 2003 %
18 % %
19 % %
20 % Copyright 1999-2021 ImageMagick Studio LLC, a non-profit organization %
21 % dedicated to making software imaging solutions freely available. %
22 % %
23 % You may not use this file except in compliance with the License. You may %
24 % obtain a copy of the License at %
25 % %
26 % https://imagemagick.org/script/license.php %
27 % %
28 % Unless required by applicable law or agreed to in writing, software %
29 % distributed under the License is distributed on an "AS IS" BASIS, %
30 % WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. %
31 % See the License for the specific language governing permissions and %
32 % limitations under the License. %
33 % %
34 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
35 %
36 % Use the compare program to mathematically and visually annotate the
37 % difference between an image and its reconstruction.
38 %
39 */
40
41 /*
42 Include declarations.
43 */
44 #include "MagickWand/studio.h"
45 #include "MagickWand/MagickWand.h"
46 #include "MagickWand/mogrify-private.h"
47 #include "MagickCore/string-private.h"
48
49 /*
50 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
51 % %
52 % %
53 % %
54 % C o m p a r e I m a g e C o m m a n d %
55 % %
56 % %
57 % %
58 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
59 %
60 % CompareImagesCommand() compares two images and returns the difference between
61 % them as a distortion metric and as a new image visually annotating their
62 % differences.
63 %
64 % The format of the CompareImagesCommand method is:
65 %
66 % MagickBooleanType CompareImagesCommand(ImageInfo *image_info,int argc,
67 % char **argv,char **metadata,ExceptionInfo *exception)
68 %
69 % A description of each parameter follows:
70 %
71 % o image_info: the image info.
72 %
73 % o argc: the number of elements in the argument vector.
74 %
75 % o argv: A text array containing the command line arguments.
76 %
77 % o metadata: any metadata is returned here.
78 %
79 % o exception: return any errors or warnings in this structure.
80 %
81 */
82
CompareUsage(void)83 static MagickBooleanType CompareUsage(void)
84 {
85 static const char
86 channel_operators[] =
87 " -separate separate an image channel into a grayscale image",
88 miscellaneous[] =
89 " -channel mask set the image channel mask\n"
90 " -debug events display copious debugging information\n"
91 " -help print program options\n"
92 " -list type print a list of supported option arguments\n"
93 " -log format format of debugging information",
94 operators[] =
95 " -brightness-contrast geometry\n"
96 " improve brightness / contrast of the image\n"
97 " -distort method args\n"
98 " distort images according to given method and args\n"
99 " -level value adjust the level of image contrast\n"
100 " -resize geometry resize the image\n"
101 " -rotate degrees apply Paeth rotation to the image\n"
102 " -sigmoidal-contrast geometry\n"
103 " increase the contrast without saturating highlights or\n"
104 " -trim trim image edges\n"
105 " -write filename write images to this file",
106 sequence_operators[] =
107 " -crop geometry cut out a rectangular region of the image",
108 settings[] =
109 " -alpha option on, activate, off, deactivate, set, opaque, copy\n"
110 " transparent, extract, background, or shape\n"
111 " -authenticate password\n"
112 " decipher image with this password\n"
113 " -background color background color\n"
114 " -colorspace type alternate image colorspace\n"
115 " -compose operator set image composite operator\n"
116 " -compress type type of pixel compression when writing the image\n"
117 " -decipher filename convert cipher pixels to plain pixels\n"
118 " -define format:option\n"
119 " define one or more image format options\n"
120 " -density geometry horizontal and vertical density of the image\n"
121 " -depth value image depth\n"
122 " -dissimilarity-threshold value\n"
123 " maximum distortion for (sub)image match\n"
124 " -encipher filename convert plain pixels to cipher pixels\n"
125 " -extract geometry extract area from image\n"
126 " -format \"string\" output formatted image characteristics\n"
127 " -fuzz distance colors within this distance are considered equal\n"
128 " -gravity type horizontal and vertical text placement\n"
129 " -highlight-color color\n"
130 " empasize pixel differences with this color\n"
131 " -identify identify the format and characteristics of the image\n"
132 " -interlace type type of image interlacing scheme\n"
133 " -limit type value pixel cache resource limit\n"
134 " -lowlight-color color\n"
135 " de-emphasize pixel differences with this color\n"
136 " -metric type measure differences between images with this metric\n"
137 " -monitor monitor progress\n"
138 " -negate replace every pixel with its complementary color \n"
139 " -passphrase filename get the passphrase from this file\n"
140 " -precision value maximum number of significant digits to print\n"
141 " -profile filename add, delete, or apply an image profile\n"
142 " -quality value JPEG/MIFF/PNG compression level\n"
143 " -quiet suppress all warning messages\n"
144 " -quantize colorspace reduce colors in this colorspace\n"
145 " -read-mask filename associate a read mask with the image\n"
146 " -regard-warnings pay attention to warning messages\n"
147 " -respect-parentheses settings remain in effect until parenthesis boundary\n"
148 " -sampling-factor geometry\n"
149 " horizontal and vertical sampling factor\n"
150 " -seed value seed a new sequence of pseudo-random numbers\n"
151 " -set attribute value set an image attribute\n"
152 " -quality value JPEG/MIFF/PNG compression level\n"
153 " -repage geometry size and location of an image canvas\n"
154 " -similarity-threshold value\n"
155 " minimum distortion for (sub)image match\n"
156 " -size geometry width and height of image\n"
157 " -subimage-search search for subimage\n"
158 " -synchronize synchronize image to storage device\n"
159 " -taint declare the image as modified\n"
160 " -transparent-color color\n"
161 " transparent color\n"
162 " -type type image type\n"
163 " -verbose print detailed information about the image\n"
164 " -version print version information\n"
165 " -virtual-pixel method\n"
166 " virtual pixel access method\n"
167 " -write-mask filename associate a write mask with the image",
168 stack_operators[] =
169 " -delete indexes delete the image from the image sequence";
170
171 ListMagickVersion(stdout);
172 (void) printf("Usage: %s [options ...] image reconstruct difference\n",
173 GetClientName());
174 (void) printf("\nImage Settings:\n");
175 (void) puts(settings);
176 (void) printf("\nImage Operators:\n");
177 (void) puts(operators);
178 (void) printf("\nImage Channel Operators:\n");
179 (void) puts(channel_operators);
180 (void) printf("\nImage Sequence Operators:\n");
181 (void) puts(sequence_operators);
182 (void) printf("\nImage Stack Operators:\n");
183 (void) puts(stack_operators);
184 (void) printf("\nMiscellaneous Options:\n");
185 (void) puts(miscellaneous);
186 (void) printf(
187 "\nBy default, the image format of 'file' is determined by its magic\n");
188 (void) printf(
189 "number. To specify a particular image format, precede the filename\n");
190 (void) printf(
191 "with an image format name and a colon (i.e. ps:image) or specify the\n");
192 (void) printf(
193 "image type as the filename suffix (i.e. image.ps). Specify 'file' as\n");
194 (void) printf("'-' for standard input or output.\n");
195 return(MagickTrue);
196 }
197
CompareImagesCommand(ImageInfo * image_info,int argc,char ** argv,char ** metadata,ExceptionInfo * exception)198 WandExport MagickBooleanType CompareImagesCommand(ImageInfo *image_info,
199 int argc,char **argv,char **metadata,ExceptionInfo *exception)
200 {
201 #define CompareEpsilon (1.0e-06)
202 #define DefaultDissimilarityThreshold 0.31830988618379067154
203 #define DefaultSimilarityThreshold (-1.0)
204 #define DestroyCompare() \
205 { \
206 if (similarity_image != (Image *) NULL) \
207 similarity_image=DestroyImageList(similarity_image); \
208 if (difference_image != (Image *) NULL) \
209 difference_image=DestroyImageList(difference_image); \
210 DestroyImageStack(); \
211 for (i=0; i < (ssize_t) argc; i++) \
212 argv[i]=DestroyString(argv[i]); \
213 argv=(char **) RelinquishMagickMemory(argv); \
214 }
215 #define ThrowCompareException(asperity,tag,option) \
216 { \
217 if (exception->severity < (asperity)) \
218 (void) ThrowMagickException(exception,GetMagickModule(),asperity,tag, \
219 "`%s'",option); \
220 DestroyCompare(); \
221 return(MagickFalse); \
222 }
223 #define ThrowCompareInvalidArgumentException(option,argument) \
224 { \
225 (void) ThrowMagickException(exception,GetMagickModule(),OptionError, \
226 "InvalidArgument","'%s': %s",option,argument); \
227 DestroyCompare(); \
228 return(MagickFalse); \
229 }
230
231 char
232 *filename,
233 *option;
234
235 const char
236 *format;
237
238 double
239 dissimilarity_threshold,
240 distortion,
241 similarity_metric,
242 similarity_threshold;
243
244 Image
245 *difference_image,
246 *image,
247 *reconstruct_image,
248 *similarity_image;
249
250 ImageStack
251 image_stack[MaxImageStackDepth+1];
252
253 MagickBooleanType
254 fire,
255 pend,
256 respect_parenthesis,
257 subimage_search;
258
259 MagickStatusType
260 status;
261
262 MetricType
263 metric;
264
265 RectangleInfo
266 offset;
267
268 ssize_t
269 i;
270
271 ssize_t
272 j,
273 k;
274
275 /*
276 Set defaults.
277 */
278 assert(image_info != (ImageInfo *) NULL);
279 assert(image_info->signature == MagickCoreSignature);
280 if (image_info->debug != MagickFalse)
281 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
282 assert(exception != (ExceptionInfo *) NULL);
283 if (argc == 2)
284 {
285 option=argv[1];
286 if ((LocaleCompare("version",option+1) == 0) ||
287 (LocaleCompare("-version",option+1) == 0))
288 {
289 ListMagickVersion(stdout);
290 return(MagickTrue);
291 }
292 }
293 if (argc < 3)
294 return(CompareUsage());
295 difference_image=NewImageList();
296 similarity_image=NewImageList();
297 dissimilarity_threshold=DefaultDissimilarityThreshold;
298 similarity_threshold=DefaultSimilarityThreshold;
299 distortion=0.0;
300 format=(char *) NULL;
301 j=1;
302 k=0;
303 metric=UndefinedErrorMetric;
304 NewImageStack();
305 option=(char *) NULL;
306 pend=MagickFalse;
307 reconstruct_image=NewImageList();
308 respect_parenthesis=MagickFalse;
309 status=MagickTrue;
310 subimage_search=MagickFalse;
311 /*
312 Compare an image.
313 */
314 ReadCommandlLine(argc,&argv);
315 status=ExpandFilenames(&argc,&argv);
316 if (status == MagickFalse)
317 ThrowCompareException(ResourceLimitError,"MemoryAllocationFailed",
318 GetExceptionMessage(errno));
319 for (i=1; i < (ssize_t) (argc-1); i++)
320 {
321 option=argv[i];
322 if (LocaleCompare(option,"(") == 0)
323 {
324 FireImageStack(MagickTrue,MagickTrue,pend);
325 if (k == MaxImageStackDepth)
326 ThrowCompareException(OptionError,"ParenthesisNestedTooDeeply",
327 option);
328 PushImageStack();
329 continue;
330 }
331 if (LocaleCompare(option,")") == 0)
332 {
333 FireImageStack(MagickTrue,MagickTrue,MagickTrue);
334 if (k == 0)
335 ThrowCompareException(OptionError,"UnableToParseExpression",option);
336 PopImageStack();
337 continue;
338 }
339 if (IsCommandOption(option) == MagickFalse)
340 {
341 Image
342 *images;
343
344 /*
345 Read input image.
346 */
347 FireImageStack(MagickFalse,MagickFalse,pend);
348 filename=argv[i];
349 if ((LocaleCompare(filename,"--") == 0) && (i < (ssize_t) (argc-1)))
350 filename=argv[++i];
351 images=ReadImages(image_info,filename,exception);
352 status&=(images != (Image *) NULL) &&
353 (exception->severity < ErrorException);
354 if (images == (Image *) NULL)
355 continue;
356 AppendImageStack(images);
357 continue;
358 }
359 pend=image != (Image *) NULL ? MagickTrue : MagickFalse;
360 switch (*(option+1))
361 {
362 case 'a':
363 {
364 if (LocaleCompare("alpha",option+1) == 0)
365 {
366 ssize_t
367 type;
368
369 if (*option == '+')
370 break;
371 i++;
372 if (i == (ssize_t) argc)
373 ThrowCompareException(OptionError,"MissingArgument",option);
374 type=ParseCommandOption(MagickAlphaChannelOptions,MagickFalse,
375 argv[i]);
376 if (type < 0)
377 ThrowCompareException(OptionError,
378 "UnrecognizedAlphaChannelOption",argv[i]);
379 break;
380 }
381 if (LocaleCompare("authenticate",option+1) == 0)
382 {
383 if (*option == '+')
384 break;
385 i++;
386 if (i == (ssize_t) argc)
387 ThrowCompareException(OptionError,"MissingArgument",option);
388 break;
389 }
390 ThrowCompareException(OptionError,"UnrecognizedOption",option);
391 }
392 case 'b':
393 {
394 if (LocaleCompare("background",option+1) == 0)
395 {
396 if (*option == '+')
397 break;
398 i++;
399 if (i == (ssize_t) argc)
400 ThrowCompareException(OptionError,"MissingArgument",option);
401 break;
402 }
403 if (LocaleCompare("brightness-contrast",option+1) == 0)
404 {
405 i++;
406 if (i == (ssize_t) argc)
407 ThrowCompareException(OptionError,"MissingArgument",option);
408 if (IsGeometry(argv[i]) == MagickFalse)
409 ThrowCompareInvalidArgumentException(option,argv[i]);
410 break;
411 }
412 ThrowCompareException(OptionError,"UnrecognizedOption",option);
413 }
414 case 'c':
415 {
416 if (LocaleCompare("cache",option+1) == 0)
417 {
418 if (*option == '+')
419 break;
420 i++;
421 if (i == (ssize_t) argc)
422 ThrowCompareException(OptionError,"MissingArgument",option);
423 if (IsGeometry(argv[i]) == MagickFalse)
424 ThrowCompareInvalidArgumentException(option,argv[i]);
425 break;
426 }
427 if (LocaleCompare("channel",option+1) == 0)
428 {
429 ssize_t
430 channel;
431
432 if (*option == '+')
433 break;
434 i++;
435 if (i == (ssize_t) argc)
436 ThrowCompareException(OptionError,"MissingArgument",option);
437 channel=ParseChannelOption(argv[i]);
438 if (channel < 0)
439 ThrowCompareException(OptionError,"UnrecognizedChannelType",
440 argv[i]);
441 break;
442 }
443 if (LocaleCompare("colorspace",option+1) == 0)
444 {
445 ssize_t
446 colorspace;
447
448 if (*option == '+')
449 break;
450 i++;
451 if (i == (ssize_t) argc)
452 ThrowCompareException(OptionError,"MissingArgument",option);
453 colorspace=ParseCommandOption(MagickColorspaceOptions,MagickFalse,
454 argv[i]);
455 if (colorspace < 0)
456 ThrowCompareException(OptionError,"UnrecognizedColorspace",
457 argv[i]);
458 break;
459 }
460 if (LocaleCompare("compose",option+1) == 0)
461 {
462 ssize_t
463 compose;
464
465 if (*option == '+')
466 break;
467 i++;
468 if (i == (ssize_t) argc)
469 ThrowCompareException(OptionError,"MissingArgument",option);
470 compose=ParseCommandOption(MagickComposeOptions,MagickFalse,
471 argv[i]);
472 if (compose < 0)
473 ThrowCompareException(OptionError,"UnrecognizedComposeOperator",
474 argv[i]);
475 break;
476 }
477 if (LocaleCompare("compress",option+1) == 0)
478 {
479 ssize_t
480 compress;
481
482 if (*option == '+')
483 break;
484 i++;
485 if (i == (ssize_t) argc)
486 ThrowCompareException(OptionError,"MissingArgument",option);
487 compress=ParseCommandOption(MagickCompressOptions,MagickFalse,
488 argv[i]);
489 if (compress < 0)
490 ThrowCompareException(OptionError,"UnrecognizedImageCompression",
491 argv[i]);
492 break;
493 }
494 if (LocaleCompare("concurrent",option+1) == 0)
495 break;
496 if (LocaleCompare("crop",option+1) == 0)
497 {
498 if (*option == '+')
499 break;
500 i++;
501 if (i == (ssize_t) argc)
502 ThrowCompareException(OptionError,"MissingArgument",option);
503 if (IsGeometry(argv[i]) == MagickFalse)
504 ThrowCompareInvalidArgumentException(option,argv[i]);
505 break;
506 }
507 ThrowCompareException(OptionError,"UnrecognizedOption",option)
508 }
509 case 'd':
510 {
511 if (LocaleCompare("debug",option+1) == 0)
512 {
513 LogEventType
514 event_mask;
515
516 if (*option == '+')
517 break;
518 i++;
519 if (i == (ssize_t) argc)
520 ThrowCompareException(OptionError,"MissingArgument",option);
521 event_mask=SetLogEventMask(argv[i]);
522 if (event_mask == UndefinedEvents)
523 ThrowCompareException(OptionError,"UnrecognizedEventType",
524 argv[i]);
525 break;
526 }
527 if (LocaleCompare("decipher",option+1) == 0)
528 {
529 if (*option == '+')
530 break;
531 i++;
532 if (i == (ssize_t) argc)
533 ThrowCompareException(OptionError,"MissingArgument",option);
534 break;
535 }
536 if (LocaleCompare("define",option+1) == 0)
537 {
538 i++;
539 if (i == (ssize_t) argc)
540 ThrowCompareException(OptionError,"MissingArgument",option);
541 if (*option == '+')
542 {
543 const char
544 *define;
545
546 define=GetImageOption(image_info,argv[i]);
547 if (define == (const char *) NULL)
548 ThrowCompareException(OptionError,"NoSuchOption",argv[i]);
549 break;
550 }
551 break;
552 }
553 if (LocaleCompare("delete",option+1) == 0)
554 {
555 if (*option == '+')
556 break;
557 i++;
558 if (i == (ssize_t) argc)
559 ThrowCompareException(OptionError,"MissingArgument",option);
560 if (IsSceneGeometry(argv[i],MagickFalse) == MagickFalse)
561 ThrowCompareInvalidArgumentException(option,argv[i]);
562 break;
563 }
564 if (LocaleCompare("density",option+1) == 0)
565 {
566 if (*option == '+')
567 break;
568 i++;
569 if (i == (ssize_t) argc)
570 ThrowCompareException(OptionError,"MissingArgument",option);
571 if (IsGeometry(argv[i]) == MagickFalse)
572 ThrowCompareInvalidArgumentException(option,argv[i]);
573 break;
574 }
575 if (LocaleCompare("depth",option+1) == 0)
576 {
577 if (*option == '+')
578 break;
579 i++;
580 if (i == (ssize_t) argc)
581 ThrowCompareException(OptionError,"MissingArgument",option);
582 if (IsGeometry(argv[i]) == MagickFalse)
583 ThrowCompareInvalidArgumentException(option,argv[i]);
584 break;
585 }
586 if (LocaleCompare("dissimilarity-threshold",option+1) == 0)
587 {
588 if (*option == '+')
589 break;
590 i++;
591 if (i == (ssize_t) argc)
592 ThrowCompareException(OptionError,"MissingArgument",option);
593 if (IsGeometry(argv[i]) == MagickFalse)
594 ThrowCompareInvalidArgumentException(option,argv[i]);
595 if (*option == '+')
596 dissimilarity_threshold=DefaultDissimilarityThreshold;
597 else
598 dissimilarity_threshold=StringToDouble(argv[i],(char **) NULL);
599 break;
600 }
601 if (LocaleCompare("distort",option+1) == 0)
602 {
603 ssize_t
604 op;
605
606 i++;
607 if (i == (ssize_t) argc)
608 ThrowCompareException(OptionError,"MissingArgument",option);
609 op=ParseCommandOption(MagickDistortOptions,MagickFalse,argv[i]);
610 if (op < 0)
611 ThrowCompareException(OptionError,"UnrecognizedDistortMethod",
612 argv[i]);
613 i++;
614 if (i == (ssize_t) argc)
615 ThrowCompareException(OptionError,"MissingArgument",option);
616 break;
617 }
618 if (LocaleCompare("duration",option+1) == 0)
619 {
620 if (*option == '+')
621 break;
622 i++;
623 if (i == (ssize_t) argc)
624 ThrowCompareException(OptionError,"MissingArgument",option);
625 if (IsGeometry(argv[i]) == MagickFalse)
626 ThrowCompareInvalidArgumentException(option,argv[i]);
627 break;
628 }
629 ThrowCompareException(OptionError,"UnrecognizedOption",option)
630 }
631 case 'e':
632 {
633 if (LocaleCompare("encipher",option+1) == 0)
634 {
635 if (*option == '+')
636 break;
637 i++;
638 if (i == (ssize_t) argc)
639 ThrowCompareException(OptionError,"MissingArgument",option);
640 break;
641 }
642 if (LocaleCompare("extract",option+1) == 0)
643 {
644 if (*option == '+')
645 break;
646 i++;
647 if (i == (ssize_t) argc)
648 ThrowCompareException(OptionError,"MissingArgument",option);
649 if (IsGeometry(argv[i]) == MagickFalse)
650 ThrowCompareInvalidArgumentException(option,argv[i]);
651 break;
652 }
653 ThrowCompareException(OptionError,"UnrecognizedOption",option)
654 }
655 case 'f':
656 {
657 if (LocaleCompare("format",option+1) == 0)
658 {
659 if (*option == '+')
660 break;
661 i++;
662 if (i == (ssize_t) argc)
663 ThrowCompareException(OptionError,"MissingArgument",option);
664 format=argv[i];
665 break;
666 }
667 if (LocaleCompare("fuzz",option+1) == 0)
668 {
669 if (*option == '+')
670 break;
671 i++;
672 if (i == (ssize_t) argc)
673 ThrowCompareException(OptionError,"MissingArgument",option);
674 if (IsGeometry(argv[i]) == MagickFalse)
675 ThrowCompareInvalidArgumentException(option,argv[i]);
676 break;
677 }
678 ThrowCompareException(OptionError,"UnrecognizedOption",option)
679 }
680 case 'g':
681 {
682 if (LocaleCompare("gravity",option+1) == 0)
683 {
684 ssize_t
685 gravity;
686
687 if (*option == '+')
688 break;
689 i++;
690 if (i == (ssize_t) argc)
691 ThrowCompareException(OptionError,"MissingArgument",option);
692 gravity=ParseCommandOption(MagickGravityOptions,MagickFalse,
693 argv[i]);
694 if (gravity < 0)
695 ThrowCompareException(OptionError,"UnrecognizedGravityType",
696 argv[i]);
697 break;
698 }
699 ThrowCompareException(OptionError,"UnrecognizedOption",option)
700 }
701 case 'h':
702 {
703 if ((LocaleCompare("help",option+1) == 0) ||
704 (LocaleCompare("-help",option+1) == 0))
705 {
706 DestroyCompare();
707 return(CompareUsage());
708 }
709 if (LocaleCompare("highlight-color",option+1) == 0)
710 {
711 if (*option == '+')
712 break;
713 i++;
714 if (i == (ssize_t) argc)
715 ThrowCompareException(OptionError,"MissingArgument",option);
716 break;
717 }
718 ThrowCompareException(OptionError,"UnrecognizedOption",option)
719 }
720 case 'i':
721 {
722 if (LocaleCompare("identify",option+1) == 0)
723 break;
724 if (LocaleCompare("interlace",option+1) == 0)
725 {
726 ssize_t
727 interlace;
728
729 if (*option == '+')
730 break;
731 i++;
732 if (i == (ssize_t) argc)
733 ThrowCompareException(OptionError,"MissingArgument",option);
734 interlace=ParseCommandOption(MagickInterlaceOptions,MagickFalse,
735 argv[i]);
736 if (interlace < 0)
737 ThrowCompareException(OptionError,"UnrecognizedInterlaceType",
738 argv[i]);
739 break;
740 }
741 ThrowCompareException(OptionError,"UnrecognizedOption",option)
742 }
743 case 'l':
744 {
745 if (LocaleCompare("level",option+1) == 0)
746 {
747 i++;
748 if (i == (ssize_t) argc)
749 ThrowCompareException(OptionError,"MissingArgument",option);
750 if (IsGeometry(argv[i]) == MagickFalse)
751 ThrowCompareInvalidArgumentException(option,argv[i]);
752 break;
753 }
754 if (LocaleCompare("limit",option+1) == 0)
755 {
756 char
757 *p;
758
759 double
760 value;
761
762 ssize_t
763 resource;
764
765 if (*option == '+')
766 break;
767 i++;
768 if (i == (ssize_t) argc)
769 ThrowCompareException(OptionError,"MissingArgument",option);
770 resource=ParseCommandOption(MagickResourceOptions,MagickFalse,
771 argv[i]);
772 if (resource < 0)
773 ThrowCompareException(OptionError,"UnrecognizedResourceType",
774 argv[i]);
775 i++;
776 if (i == (ssize_t) argc)
777 ThrowCompareException(OptionError,"MissingArgument",option);
778 value=StringToDouble(argv[i],&p);
779 (void) value;
780 if ((p == argv[i]) && (LocaleCompare("unlimited",argv[i]) != 0))
781 ThrowCompareInvalidArgumentException(option,argv[i]);
782 break;
783 }
784 if (LocaleCompare("list",option+1) == 0)
785 {
786 ssize_t
787 list;
788
789 if (*option == '+')
790 break;
791 i++;
792 if (i == (ssize_t) argc)
793 ThrowCompareException(OptionError,"MissingArgument",option);
794 list=ParseCommandOption(MagickListOptions,MagickFalse,argv[i]);
795 if (list < 0)
796 ThrowCompareException(OptionError,"UnrecognizedListType",argv[i]);
797 status=MogrifyImageInfo(image_info,(int) (i-j+1),(const char **)
798 argv+j,exception);
799 DestroyCompare();
800 return(status == 0 ? MagickFalse : MagickTrue);
801 }
802 if (LocaleCompare("log",option+1) == 0)
803 {
804 if (*option == '+')
805 break;
806 i++;
807 if ((i == (ssize_t) argc) || (strchr(argv[i],'%') == (char *) NULL))
808 ThrowCompareException(OptionError,"MissingArgument",option);
809 break;
810 }
811 if (LocaleCompare("lowlight-color",option+1) == 0)
812 {
813 if (*option == '+')
814 break;
815 i++;
816 if (i == (ssize_t) argc)
817 ThrowCompareException(OptionError,"MissingArgument",option);
818 break;
819 }
820 ThrowCompareException(OptionError,"UnrecognizedOption",option)
821 }
822 case 'm':
823 {
824 if (LocaleCompare("matte",option+1) == 0)
825 break;
826 if (LocaleCompare("metric",option+1) == 0)
827 {
828 ssize_t
829 type;
830
831 if (*option == '+')
832 break;
833 i++;
834 if (i == (ssize_t) argc)
835 ThrowCompareException(OptionError,"MissingArgument",option);
836 type=ParseCommandOption(MagickMetricOptions,MagickTrue,argv[i]);
837 if (type < 0)
838 ThrowCompareException(OptionError,"UnrecognizedMetricType",
839 argv[i]);
840 metric=(MetricType) type;
841 break;
842 }
843 if (LocaleCompare("monitor",option+1) == 0)
844 break;
845 ThrowCompareException(OptionError,"UnrecognizedOption",option)
846 }
847 case 'n':
848 {
849 if (LocaleCompare("negate",option+1) == 0)
850 break;
851 ThrowCompareException(OptionError,"UnrecognizedOption",option)
852 }
853 case 'p':
854 {
855 if (LocaleCompare("passphrase",option+1) == 0)
856 {
857 if (*option == '+')
858 break;
859 i++;
860 if (i == (ssize_t) argc)
861 ThrowCompareException(OptionError,"MissingArgument",option);
862 break;
863 }
864 if (LocaleCompare("precision",option+1) == 0)
865 {
866 if (*option == '+')
867 break;
868 i++;
869 if (i == (ssize_t) argc)
870 ThrowCompareException(OptionError,"MissingArgument",option);
871 if (IsGeometry(argv[i]) == MagickFalse)
872 ThrowCompareInvalidArgumentException(option,argv[i]);
873 break;
874 }
875 if (LocaleCompare("profile",option+1) == 0)
876 {
877 i++;
878 if (i == (ssize_t) argc)
879 ThrowCompareException(OptionError,"MissingArgument",option);
880 break;
881 }
882 ThrowCompareException(OptionError,"UnrecognizedOption",option)
883 }
884 case 'q':
885 {
886 if (LocaleCompare("quality",option+1) == 0)
887 {
888 if (*option == '+')
889 break;
890 i++;
891 if (i == (ssize_t) argc)
892 ThrowCompareException(OptionError,"MissingArgument",option);
893 if (IsGeometry(argv[i]) == MagickFalse)
894 ThrowCompareInvalidArgumentException(option,argv[i]);
895 break;
896 }
897 if (LocaleCompare("quantize",option+1) == 0)
898 {
899 ssize_t
900 colorspace;
901
902 if (*option == '+')
903 break;
904 i++;
905 if (i == (ssize_t) argc)
906 ThrowCompareException(OptionError,"MissingArgument",option);
907 colorspace=ParseCommandOption(MagickColorspaceOptions,
908 MagickFalse,argv[i]);
909 if (colorspace < 0)
910 ThrowCompareException(OptionError,"UnrecognizedColorspace",
911 argv[i]);
912 break;
913 }
914 if (LocaleCompare("quiet",option+1) == 0)
915 break;
916 ThrowCompareException(OptionError,"UnrecognizedOption",option)
917 }
918 case 'r':
919 {
920 if (LocaleCompare("read-mask",option+1) == 0)
921 {
922 if (*option == '+')
923 break;
924 i++;
925 if (i == (ssize_t) argc)
926 ThrowCompareException(OptionError,"MissingArgument",option);
927 break;
928 }
929 if (LocaleCompare("regard-warnings",option+1) == 0)
930 break;
931 if (LocaleCompare("repage",option+1) == 0)
932 {
933 if (*option == '+')
934 break;
935 i++;
936 if (i == (ssize_t) argc)
937 ThrowCompareException(OptionError,"MissingArgument",option);
938 if (IsGeometry(argv[i]) == MagickFalse)
939 ThrowCompareInvalidArgumentException(option,argv[i]);
940 break;
941 }
942 if (LocaleCompare("resize",option+1) == 0)
943 {
944 if (*option == '+')
945 break;
946 i++;
947 if (i == (ssize_t) argc)
948 ThrowCompareException(OptionError,"MissingArgument",option);
949 if (IsGeometry(argv[i]) == MagickFalse)
950 ThrowCompareInvalidArgumentException(option,argv[i]);
951 break;
952 }
953 if (LocaleNCompare("respect-parentheses",option+1,17) == 0)
954 {
955 respect_parenthesis=(*option == '-') ? MagickTrue : MagickFalse;
956 break;
957 }
958 if (LocaleCompare("rotate",option+1) == 0)
959 {
960 i++;
961 if (i == (ssize_t) argc)
962 ThrowCompareException(OptionError,"MissingArgument",option);
963 if (IsGeometry(argv[i]) == MagickFalse)
964 ThrowCompareInvalidArgumentException(option,argv[i]);
965 break;
966 }
967 ThrowCompareException(OptionError,"UnrecognizedOption",option)
968 }
969 case 's':
970 {
971 if (LocaleCompare("sampling-factor",option+1) == 0)
972 {
973 if (*option == '+')
974 break;
975 i++;
976 if (i == (ssize_t) argc)
977 ThrowCompareException(OptionError,"MissingArgument",option);
978 if (IsGeometry(argv[i]) == MagickFalse)
979 ThrowCompareInvalidArgumentException(option,argv[i]);
980 break;
981 }
982 if (LocaleCompare("seed",option+1) == 0)
983 {
984 if (*option == '+')
985 break;
986 i++;
987 if (i == (ssize_t) argc)
988 ThrowCompareException(OptionError,"MissingArgument",option);
989 if (IsGeometry(argv[i]) == MagickFalse)
990 ThrowCompareInvalidArgumentException(option,argv[i]);
991 break;
992 }
993 if (LocaleCompare("separate",option+1) == 0)
994 break;
995 if (LocaleCompare("set",option+1) == 0)
996 {
997 i++;
998 if (i == (ssize_t) argc)
999 ThrowCompareException(OptionError,"MissingArgument",option);
1000 if (*option == '+')
1001 break;
1002 i++;
1003 if (i == (ssize_t) argc)
1004 ThrowCompareException(OptionError,"MissingArgument",option);
1005 break;
1006 }
1007 if (LocaleCompare("sigmoidal-contrast",option+1) == 0)
1008 {
1009 i++;
1010 if (i == (ssize_t) argc)
1011 ThrowCompareException(OptionError,"MissingArgument",option);
1012 if (IsGeometry(argv[i]) == MagickFalse)
1013 ThrowCompareInvalidArgumentException(option,argv[i]);
1014 break;
1015 }
1016 if (LocaleCompare("similarity-threshold",option+1) == 0)
1017 {
1018 if (*option == '+')
1019 break;
1020 i++;
1021 if (i == (ssize_t) argc)
1022 ThrowCompareException(OptionError,"MissingArgument",option);
1023 if (IsGeometry(argv[i]) == MagickFalse)
1024 ThrowCompareInvalidArgumentException(option,argv[i]);
1025 if (*option == '+')
1026 similarity_threshold=DefaultSimilarityThreshold;
1027 else
1028 similarity_threshold=StringToDouble(argv[i],(char **) NULL);
1029 break;
1030 }
1031 if (LocaleCompare("size",option+1) == 0)
1032 {
1033 if (*option == '+')
1034 break;
1035 i++;
1036 if (i == (ssize_t) argc)
1037 ThrowCompareException(OptionError,"MissingArgument",option);
1038 if (IsGeometry(argv[i]) == MagickFalse)
1039 ThrowCompareInvalidArgumentException(option,argv[i]);
1040 break;
1041 }
1042 if (LocaleCompare("subimage-search",option+1) == 0)
1043 {
1044 if (*option == '+')
1045 {
1046 subimage_search=MagickFalse;
1047 break;
1048 }
1049 subimage_search=MagickTrue;
1050 break;
1051 }
1052 if (LocaleCompare("synchronize",option+1) == 0)
1053 break;
1054 ThrowCompareException(OptionError,"UnrecognizedOption",option)
1055 }
1056 case 't':
1057 {
1058 if (LocaleCompare("taint",option+1) == 0)
1059 break;
1060 if (LocaleCompare("transparent-color",option+1) == 0)
1061 {
1062 if (*option == '+')
1063 break;
1064 i++;
1065 if (i == (ssize_t) argc)
1066 ThrowCompareException(OptionError,"MissingArgument",option);
1067 break;
1068 }
1069 if (LocaleCompare("trim",option+1) == 0)
1070 break;
1071 if (LocaleCompare("type",option+1) == 0)
1072 {
1073 ssize_t
1074 type;
1075
1076 if (*option == '+')
1077 break;
1078 i++;
1079 if (i == (ssize_t) argc)
1080 ThrowCompareException(OptionError,"MissingArgument",option);
1081 type=ParseCommandOption(MagickTypeOptions,MagickFalse,argv[i]);
1082 if (type < 0)
1083 ThrowCompareException(OptionError,"UnrecognizedImageType",
1084 argv[i]);
1085 break;
1086 }
1087 ThrowCompareException(OptionError,"UnrecognizedOption",option)
1088 }
1089 case 'v':
1090 {
1091 if (LocaleCompare("verbose",option+1) == 0)
1092 break;
1093 if ((LocaleCompare("version",option+1) == 0) ||
1094 (LocaleCompare("-version",option+1) == 0))
1095 {
1096 ListMagickVersion(stdout);
1097 break;
1098 }
1099 if (LocaleCompare("virtual-pixel",option+1) == 0)
1100 {
1101 ssize_t
1102 method;
1103
1104 if (*option == '+')
1105 break;
1106 i++;
1107 if (i == (ssize_t) argc)
1108 ThrowCompareException(OptionError,"MissingArgument",option);
1109 method=ParseCommandOption(MagickVirtualPixelOptions,MagickFalse,
1110 argv[i]);
1111 if (method < 0)
1112 ThrowCompareException(OptionError,
1113 "UnrecognizedVirtualPixelMethod",argv[i]);
1114 break;
1115 }
1116 ThrowCompareException(OptionError,"UnrecognizedOption",option)
1117 }
1118 case 'w':
1119 {
1120 if (LocaleCompare("write",option+1) == 0)
1121 {
1122 i++;
1123 if (i == (ssize_t) argc)
1124 ThrowCompareException(OptionError,"MissingArgument",option);
1125 break;
1126 }
1127 if (LocaleCompare("write-mask",option+1) == 0)
1128 {
1129 if (*option == '+')
1130 break;
1131 i++;
1132 if (i == (ssize_t) argc)
1133 ThrowCompareException(OptionError,"MissingArgument",option);
1134 break;
1135 }
1136 ThrowCompareException(OptionError,"UnrecognizedOption",option)
1137 }
1138 case '?':
1139 break;
1140 default:
1141 ThrowCompareException(OptionError,"UnrecognizedOption",option)
1142 }
1143 fire=(GetCommandOptionFlags(MagickCommandOptions,MagickFalse,option) &
1144 FireOptionFlag) == 0 ? MagickFalse : MagickTrue;
1145 if (fire != MagickFalse)
1146 FireImageStack(MagickTrue,MagickTrue,MagickTrue);
1147 }
1148 if (k != 0)
1149 ThrowCompareException(OptionError,"UnbalancedParenthesis",argv[i]);
1150 if (i-- != (ssize_t) (argc-1))
1151 ThrowCompareException(OptionError,"MissingAnImageFilename",argv[i]);
1152 if ((image == (Image *) NULL) || (GetImageListLength(image) < 2))
1153 ThrowCompareException(OptionError,"MissingAnImageFilename",argv[i]);
1154 FinalizeImageSettings(image_info,image,MagickTrue);
1155 if ((image == (Image *) NULL) || (GetImageListLength(image) < 2))
1156 ThrowCompareException(OptionError,"MissingAnImageFilename",argv[i]);
1157 image=GetImageFromList(image,0);
1158 reconstruct_image=GetImageFromList(image,1);
1159 offset.x=0;
1160 offset.y=0;
1161 if (subimage_search != MagickFalse)
1162 {
1163 similarity_image=SimilarityImage(image,reconstruct_image,metric,
1164 similarity_threshold,&offset,&similarity_metric,exception);
1165 if (similarity_metric > dissimilarity_threshold)
1166 ThrowCompareException(ImageError,"ImagesTooDissimilar",image->filename);
1167 }
1168 if ((reconstruct_image->columns == image->columns) &&
1169 (reconstruct_image->rows == image->rows))
1170 difference_image=CompareImages(image,reconstruct_image,metric,&distortion,
1171 exception);
1172 else
1173 if (similarity_image == (Image *) NULL)
1174 difference_image=CompareImages(image,reconstruct_image,metric,&distortion,
1175 exception);
1176 else
1177 {
1178 Image
1179 *composite_image;
1180
1181 /*
1182 Determine if reconstructed image is a subimage of the image.
1183 */
1184 composite_image=CloneImage(image,0,0,MagickTrue,exception);
1185 if (composite_image == (Image *) NULL)
1186 difference_image=CompareImages(image,reconstruct_image,metric,
1187 &distortion,exception);
1188 else
1189 {
1190 Image
1191 *distort_image;
1192
1193 RectangleInfo
1194 page;
1195
1196 (void) CompositeImage(composite_image,reconstruct_image,
1197 CopyCompositeOp,MagickTrue,offset.x,offset.y,exception);
1198 difference_image=CompareImages(image,composite_image,metric,
1199 &distortion,exception);
1200 if (difference_image != (Image *) NULL)
1201 {
1202 difference_image->page.x=offset.x;
1203 difference_image->page.y=offset.y;
1204 }
1205 composite_image=DestroyImage(composite_image);
1206 page.width=reconstruct_image->columns;
1207 page.height=reconstruct_image->rows;
1208 page.x=offset.x;
1209 page.y=offset.y;
1210 distort_image=CropImage(image,&page,exception);
1211 if (distort_image != (Image *) NULL)
1212 {
1213 Image
1214 *sans_image;
1215
1216 sans_image=CompareImages(distort_image,reconstruct_image,metric,
1217 &distortion,exception);
1218 distort_image=DestroyImage(distort_image);
1219 if (sans_image != (Image *) NULL)
1220 sans_image=DestroyImage(sans_image);
1221 }
1222 }
1223 if (difference_image != (Image *) NULL)
1224 {
1225 AppendImageToList(&difference_image,similarity_image);
1226 similarity_image=(Image *) NULL;
1227 }
1228 }
1229 if (difference_image == (Image *) NULL)
1230 status=0;
1231 else
1232 {
1233 if (image_info->verbose != MagickFalse)
1234 (void) SetImageColorMetric(image,reconstruct_image,exception);
1235 if (*difference_image->magick == '\0')
1236 (void) CopyMagickString(difference_image->magick,image->magick,
1237 MagickPathExtent);
1238 if (image_info->verbose == MagickFalse)
1239 {
1240 switch (metric)
1241 {
1242 case FuzzErrorMetric:
1243 case MeanAbsoluteErrorMetric:
1244 case MeanSquaredErrorMetric:
1245 case PeakAbsoluteErrorMetric:
1246 case RootMeanSquaredErrorMetric:
1247 {
1248 (void) FormatLocaleFile(stderr,"%.*g (%.*g)",GetMagickPrecision(),
1249 QuantumRange*distortion,GetMagickPrecision(),
1250 (double) distortion);
1251 break;
1252 }
1253 case AbsoluteErrorMetric:
1254 case NormalizedCrossCorrelationErrorMetric:
1255 case PeakSignalToNoiseRatioErrorMetric:
1256 case PerceptualHashErrorMetric:
1257 case StructuralSimilarityErrorMetric:
1258 case StructuralDissimilarityErrorMetric:
1259 {
1260 (void) FormatLocaleFile(stderr,"%.*g",GetMagickPrecision(),
1261 distortion);
1262 break;
1263 }
1264 case MeanErrorPerPixelErrorMetric:
1265 {
1266 (void) FormatLocaleFile(stderr,"%.*g (%.*g, %.*g)",
1267 GetMagickPrecision(),distortion,
1268 GetMagickPrecision(),image->error.normalized_mean_error,
1269 GetMagickPrecision(),image->error.normalized_maximum_error);
1270 break;
1271 }
1272 case UndefinedErrorMetric:
1273 break;
1274 }
1275 if (subimage_search != MagickFalse)
1276 (void) FormatLocaleFile(stderr," @ %.20g,%.20g",
1277 (double) difference_image->page.x,
1278 (double) difference_image->page.y);
1279 }
1280 else
1281 {
1282 double
1283 *channel_distortion;
1284
1285 channel_distortion=GetImageDistortions(image,reconstruct_image,
1286 metric,exception);
1287 (void) FormatLocaleFile(stderr,"Image: %s\n",image->filename);
1288 if ((reconstruct_image->columns != image->columns) ||
1289 (reconstruct_image->rows != image->rows))
1290 (void) FormatLocaleFile(stderr,"Offset: %.20g,%.20g\n",(double)
1291 difference_image->page.x,(double) difference_image->page.y);
1292 (void) FormatLocaleFile(stderr," Channel distortion: %s\n",
1293 CommandOptionToMnemonic(MagickMetricOptions,(ssize_t) metric));
1294 switch (metric)
1295 {
1296 case FuzzErrorMetric:
1297 case MeanAbsoluteErrorMetric:
1298 case MeanSquaredErrorMetric:
1299 case PeakAbsoluteErrorMetric:
1300 case RootMeanSquaredErrorMetric:
1301 {
1302 switch (image->colorspace)
1303 {
1304 case RGBColorspace:
1305 default:
1306 {
1307 (void) FormatLocaleFile(stderr," red: %.*g (%.*g)\n",
1308 GetMagickPrecision(),QuantumRange*
1309 channel_distortion[RedPixelChannel],GetMagickPrecision(),
1310 channel_distortion[RedPixelChannel]);
1311 (void) FormatLocaleFile(stderr," green: %.*g (%.*g)\n",
1312 GetMagickPrecision(),QuantumRange*
1313 channel_distortion[GreenPixelChannel],GetMagickPrecision(),
1314 channel_distortion[GreenPixelChannel]);
1315 (void) FormatLocaleFile(stderr," blue: %.*g (%.*g)\n",
1316 GetMagickPrecision(),QuantumRange*
1317 channel_distortion[BluePixelChannel],GetMagickPrecision(),
1318 channel_distortion[BluePixelChannel]);
1319 if (image->alpha_trait != UndefinedPixelTrait)
1320 (void) FormatLocaleFile(stderr," alpha: %.*g (%.*g)\n",
1321 GetMagickPrecision(),QuantumRange*
1322 channel_distortion[AlphaPixelChannel],
1323 GetMagickPrecision(),
1324 channel_distortion[AlphaPixelChannel]);
1325 break;
1326 }
1327 case CMYKColorspace:
1328 {
1329 (void) FormatLocaleFile(stderr," cyan: %.*g (%.*g)\n",
1330 GetMagickPrecision(),QuantumRange*
1331 channel_distortion[CyanPixelChannel],GetMagickPrecision(),
1332 channel_distortion[CyanPixelChannel]);
1333 (void) FormatLocaleFile(stderr," magenta: %.*g (%.*g)\n",
1334 GetMagickPrecision(),QuantumRange*
1335 channel_distortion[MagentaPixelChannel],
1336 GetMagickPrecision(),
1337 channel_distortion[MagentaPixelChannel]);
1338 (void) FormatLocaleFile(stderr," yellow: %.*g (%.*g)\n",
1339 GetMagickPrecision(),QuantumRange*
1340 channel_distortion[YellowPixelChannel],GetMagickPrecision(),
1341 channel_distortion[YellowPixelChannel]);
1342 (void) FormatLocaleFile(stderr," black: %.*g (%.*g)\n",
1343 GetMagickPrecision(),QuantumRange*
1344 channel_distortion[BlackPixelChannel],GetMagickPrecision(),
1345 channel_distortion[BlackPixelChannel]);
1346 if (image->alpha_trait != UndefinedPixelTrait)
1347 (void) FormatLocaleFile(stderr," alpha: %.*g (%.*g)\n",
1348 GetMagickPrecision(),QuantumRange*
1349 channel_distortion[AlphaPixelChannel],
1350 GetMagickPrecision(),
1351 channel_distortion[AlphaPixelChannel]);
1352 break;
1353 }
1354 case LinearGRAYColorspace:
1355 case GRAYColorspace:
1356 {
1357 (void) FormatLocaleFile(stderr," gray: %.*g (%.*g)\n",
1358 GetMagickPrecision(),QuantumRange*
1359 channel_distortion[GrayPixelChannel],GetMagickPrecision(),
1360 channel_distortion[GrayPixelChannel]);
1361 if (image->alpha_trait != UndefinedPixelTrait)
1362 (void) FormatLocaleFile(stderr," alpha: %.*g (%.*g)\n",
1363 GetMagickPrecision(),QuantumRange*
1364 channel_distortion[AlphaPixelChannel],
1365 GetMagickPrecision(),
1366 channel_distortion[AlphaPixelChannel]);
1367 break;
1368 }
1369 }
1370 (void) FormatLocaleFile(stderr," all: %.*g (%.*g)\n",
1371 GetMagickPrecision(),QuantumRange*
1372 channel_distortion[MaxPixelChannels],GetMagickPrecision(),
1373 channel_distortion[MaxPixelChannels]);
1374 break;
1375 }
1376 case AbsoluteErrorMetric:
1377 case NormalizedCrossCorrelationErrorMetric:
1378 case PeakSignalToNoiseRatioErrorMetric:
1379 case PerceptualHashErrorMetric:
1380 case StructuralSimilarityErrorMetric:
1381 case StructuralDissimilarityErrorMetric:
1382 {
1383 switch (image->colorspace)
1384 {
1385 case RGBColorspace:
1386 default:
1387 {
1388 (void) FormatLocaleFile(stderr," red: %.*g\n",
1389 GetMagickPrecision(),channel_distortion[RedPixelChannel]);
1390 (void) FormatLocaleFile(stderr," green: %.*g\n",
1391 GetMagickPrecision(),channel_distortion[GreenPixelChannel]);
1392 (void) FormatLocaleFile(stderr," blue: %.*g\n",
1393 GetMagickPrecision(),channel_distortion[BluePixelChannel]);
1394 if (image->alpha_trait != UndefinedPixelTrait)
1395 (void) FormatLocaleFile(stderr," alpha: %.*g\n",
1396 GetMagickPrecision(),
1397 channel_distortion[AlphaPixelChannel]);
1398 break;
1399 }
1400 case CMYKColorspace:
1401 {
1402 (void) FormatLocaleFile(stderr," cyan: %.*g\n",
1403 GetMagickPrecision(),channel_distortion[CyanPixelChannel]);
1404 (void) FormatLocaleFile(stderr," magenta: %.*g\n",
1405 GetMagickPrecision(),
1406 channel_distortion[MagentaPixelChannel]);
1407 (void) FormatLocaleFile(stderr," yellow: %.*g\n",
1408 GetMagickPrecision(),
1409 channel_distortion[YellowPixelChannel]);
1410 (void) FormatLocaleFile(stderr," black: %.*g\n",
1411 GetMagickPrecision(),
1412 channel_distortion[BlackPixelChannel]);
1413 if (image->alpha_trait != UndefinedPixelTrait)
1414 (void) FormatLocaleFile(stderr," alpha: %.*g\n",
1415 GetMagickPrecision(),
1416 channel_distortion[AlphaPixelChannel]);
1417 break;
1418 }
1419 case LinearGRAYColorspace:
1420 case GRAYColorspace:
1421 {
1422 (void) FormatLocaleFile(stderr," gray: %.*g\n",
1423 GetMagickPrecision(),channel_distortion[GrayPixelChannel]);
1424 if (image->alpha_trait != UndefinedPixelTrait)
1425 (void) FormatLocaleFile(stderr," alpha: %.*g\n",
1426 GetMagickPrecision(),
1427 channel_distortion[AlphaPixelChannel]);
1428 break;
1429 }
1430 }
1431 (void) FormatLocaleFile(stderr," all: %.*g\n",
1432 GetMagickPrecision(),channel_distortion[MaxPixelChannels]);
1433 break;
1434 }
1435 case MeanErrorPerPixelErrorMetric:
1436 {
1437 (void) FormatLocaleFile(stderr," %.*g (%.*g, %.*g)\n",
1438 GetMagickPrecision(),channel_distortion[MaxPixelChannels],
1439 GetMagickPrecision(),image->error.normalized_mean_error,
1440 GetMagickPrecision(),image->error.normalized_maximum_error);
1441 break;
1442 }
1443 case UndefinedErrorMetric:
1444 break;
1445 }
1446 channel_distortion=(double *) RelinquishMagickMemory(
1447 channel_distortion);
1448 if (subimage_search != MagickFalse)
1449 (void) FormatLocaleFile(stderr," Offset: %.20g,%.20g\n",(double)
1450 difference_image->page.x,(double) difference_image->page.y);
1451 }
1452 status&=WriteImages(image_info,difference_image,argv[argc-1],exception);
1453 if ((metadata != (char **) NULL) && (format != (char *) NULL))
1454 {
1455 char
1456 *text;
1457
1458 text=InterpretImageProperties(image_info,difference_image,format,
1459 exception);
1460 if (text == (char *) NULL)
1461 ThrowCompareException(ResourceLimitError,"MemoryAllocationFailed",
1462 GetExceptionMessage(errno));
1463 (void) ConcatenateString(&(*metadata),text);
1464 text=DestroyString(text);
1465 }
1466 difference_image=DestroyImageList(difference_image);
1467 }
1468 DestroyCompare();
1469 if ((metric == NormalizedCrossCorrelationErrorMetric) ||
1470 (metric == UndefinedErrorMetric))
1471 {
1472 if (fabs(distortion-1.0) > CompareEpsilon)
1473 (void) SetImageOption(image_info,"compare:dissimilar","true");
1474 }
1475 else
1476 if (fabs(distortion) > CompareEpsilon)
1477 (void) SetImageOption(image_info,"compare:dissimilar","true");
1478 return(status != 0 ? MagickTrue : MagickFalse);
1479 }
1480