forked from ImageMagick/ImageMagick
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathconvert.html
1299 lines (1048 loc) · 41.1 KB
/
convert.html
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
<!DOCTYPE html>
<html lang="en">
<head>
<title>ImageMagick: Command-line Tools: Convert</title>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
<meta name="application-name" content="ImageMagick">
<meta name="description" content="ImageMagick® is a software suite to create, edit, compose, or convert bitmap images. It can read and write images in a variety of formats (over 200) including PNG, JPEG, JPEG-2000, GIF, WebP, Postscript, PDF, and SVG. Use ImageMagick to resize, flip, mirror, rotate, distort, shear and transform images, adjust image colors, apply various special effects, or draw text, lines, polygons, ellipses and Bézier curves.">
<meta name="application-url" content="http://www.imagemagick.org">
<meta name="generator" content="PHP">
<meta name="keywords" content="command-line, tools:, convert, ImageMagick, PerlMagick, image processing, image, photo, software, Magick++, OpenMP, convert">
<meta name="rating" content="GENERAL">
<meta name="robots" content="INDEX, FOLLOW">
<meta name="generator" content="ImageMagick Studio LLC">
<meta name="author" content="ImageMagick Studio LLC">
<meta name="revisit-after" content="2 DAYS">
<meta name="resource-type" content="document">
<meta name="copyright" content="Copyright (c) 1999-2015 ImageMagick Studio LLC">
<meta name="distribution" content="Global">
<meta name="magick-serial" content="P131-S030410-R485315270133-P82224-A6668-G1245-1">
<link rel="icon" href="../images/wand.png">
<link rel="shortcut icon" href="../images/wand.ico">
<link rel="stylesheet" href="../css/magick.html">
</head>
<body>
<div class="main">
<div class="magick-masthead">
<div class="container">
<script async="async" src="http://localhost/pagead/js/adsbygoogle.js"></script> <ins class="adsbygoogle" style="display:block" data-ad-client="ca-pub-3129977114552745" data-ad-slot="6345125851" data-ad-format="auto"></ins>
<script>
(adsbygoogle = window.adsbygoogle || []).push({});
</script>
<nav class="magick-nav">
<a class="magick-nav-item " href="../index.html">Home</a>
<a class="magick-nav-item " href="binary-releases.html">Download</a>
<a class="magick-nav-item " href="command-line-tools.html">Tools</a>
<a class="magick-nav-item " href="command-line-options.html">Options</a>
<a class="magick-nav-item " href="resources.html">Resources</a>
<a class="magick-nav-item " href="api.html">Develop</a>
<a class="magick-nav-item " href="http://nextgen.imagemagick.org/script/search.php">Search</a>
<a class="magick-nav-item pull-right" href="http://www.imagemagick.org/discourse-server/">Community</a>
</nav>
</div>
</div>
<div class="container">
<div class="magick-header">
<p class="lead magick-description">Use the <code>convert</code> program to convert between image formats as well as resize an image, blur, crop, despeckle, dither, draw on, flip, join, re-sample, and much more. See <a href="command-line-processing.html">Command Line Processing</a> for advice on how to structure your <code>convert</code> command or see below for example usages of the command.</p>
<p>We list a few examples of the <code>convert</code> command here to illustrate its usefulness and ease of use. To get started, lets convert an image in the JPEG format to PNG:</p>
<pre>
convert rose.jpg rose.png
</pre>
<p>Next, we reduce the image size before it is written to the PNG format:</p>
<pre>
convert rose.jpg -resize 50% rose.png
</pre>
<ul>
<a href="../images/rose.jpg">
<img src="../images/rose.jpg" width="70" height="46" alt="rose">
</a>
<img style="margin-top:13px; margin-bottom:13px;" src="../images/right.gif" width="20" height="20" alt="==>">
<a href="../images/rose.png">
<img style="margin-top:11px; margin-bottom:12px;" src="../images/rose.png" width="35" height="23" alt="rose">
</a>
</ul>
<p>You can combine multiple image-processing operations to produce complex results:</p>
<pre>
convert -size 320x85 canvas:none -font Bookman-DemiItalic -pointsize 72 \
-draw "text 25,60 \'Magick\'" -channel RGBA -blur 0x6 -fill darkred -stroke magenta \
-draw "text 20,55 \'Magick\'" fuzzy-magick.png
</pre>
<ul>
<a href="../images/fuzzy-magick.png"><img src="../images/fuzzy-magick.png" width="320" height="85" alt="fuzzy-magick"></a>
</ul>
<p>or here we resize an image with improved quality:</p>
<pre>
convert input.png -colorspace RGB +sigmoidal-contrast 11.6933 \
-define filter:filter=Sinc -define filter:window=Jinc -define filter:lobes=3 \
-resize 400% -sigmoidal-contrast 11.6933 -colorspace sRGB output.png');
</pre>
<p>You can find additional examples of using <code>convert</code> in <a href="http://www.imagemagick.org/Usage/">Examples of ImageMagick Usage</a>.</p>
<h2 class="magick-header"><a id="options"></a>Option Summary</h2>
<p>The <code>convert</code> command recognizes these options. Click on an option to get more details about how that option works.</p>
<div class="table-responsive">
<table class="table table-condensed table-striped">
<tr>
<td><a href="command-line-options.html#adaptive-blur">-adaptive-blur <var>geometry</var></a></td>
<td>adaptively blur pixels; decrease effect near edges</td>
</tr>
<tr>
<td><a href="command-line-options.html#adaptive-resize">-adaptive-resize <var>geometry</var></a></td>
<td>adaptively resize image with data dependent triangulation.</td>
</tr>
<tr>
<td><a href="command-line-options.html#adaptive-sharpen">-adaptive-sharpen <var>geometry</var></a></td>
<td>adaptively sharpen pixels; increase effect near edges</td>
</tr>
<tr>
<td><a href="command-line-options.html#adjoin">-adjoin</a></td>
<td>join images into a single multi-image file</td>
</tr>
<tr>
<td><a href="command-line-options.html#affine">-affine <var>matrix</var></a></td>
<td>affine transform matrix</td>
</tr>
<tr>
<td><a href="command-line-options.html#alpha">-alpha</a></td>
<td>on, activate, off, deactivate, set, opaque, copy",
transparent, extract, background, or shape the alpha channel</td>
</tr>
<tr>
<td><a href="command-line-options.html#annotate">-annotate <var>geometry text</var></a></td>
<td>annotate the image with text</td>
</tr>
<tr>
<td><a href="command-line-options.html#antialias">-antialias</a></td>
<td>remove pixel-aliasing</td>
</tr>
<tr>
<td><a href="command-line-options.html#append">-append</a></td>
<td>append an image sequence</td>
</tr>
<tr>
<td><a href="command-line-options.html#authenticate">-authenticate <var>value</var></a></td>
<td>decipher image with this password</td>
</tr>
<tr>
<td><a href="command-line-options.html#auto-gamma">-auto-gamma</a></td>
<td>automagically adjust gamma level of image</td>
</tr>
<tr>
<td><a href="command-line-options.html#auto-level">-auto-level</a></td>
<td>automagically adjust color levels of image</td>
</tr>
<tr>
<td><a href="command-line-options.html#auto-orient">-auto-orient</a></td>
<td>automagically orient image</td>
</tr>
<tr>
<td><a href="command-line-options.html#background">-background <var>color</var></a></td>
<td>background color</td>
</tr>
<tr>
<td><a href="command-line-options.html#bench">-bench <var>iterations</var></a></td>
<td>measure performance</td>
</tr>
<tr>
<td><a href="command-line-options.html#bias">-bias <var>value</var></a></td>
<td>add bias when convolving an image</td>
</tr>
<tr>
<td><a href="command-line-options.html#black-threshold">-black-threshold <var>value</var></a></td>
<td>force all pixels below the threshold into black</td>
</tr>
<tr>
<td><a href="command-line-options.html#blue-primary">-blue-primary <var>point</var></a></td>
<td>chromaticity blue primary point</td>
</tr>
<tr>
<td><a href="command-line-options.html#blue-shift">-blue-shift <var>factor</var></a></td>
<td>simulate a scene at nighttime in the moonlight</td>
</tr>
<tr>
<td><a href="command-line-options.html#blur">-blur <var>geometry</var></a></td>
<td>reduce image noise and reduce detail levels</td>
</tr>
<tr>
<td><a href="command-line-options.html#border">-border <var>geometry</var></a></td>
<td>surround image with a border of color</td>
</tr>
<tr>
<td><a href="command-line-options.html#bordercolor">-bordercolor <var>color</var></a></td>
<td>border color</td>
</tr>
<tr>
<td><a href="command-line-options.html#brightness-contrast">-brightness-contrast <var>geometry</var></a></td>
<td>improve brightness / contrast of the image</td>
</tr>
<tr>
<td><a href="command-line-options.html#canny">-canny <var>geometry</var></a></td>
<td>use a multi-stage algorithm to detect a wide range of edges in the image</td>
</tr>
<tr>
<td><a href="command-line-options.html#caption">-caption <var>string</var></a></td>
<td>assign a caption to an image</td>
</tr>
<tr>
<td><a href="command-line-options.html#cdl">-cdl <var>filename</var></a></td>
<td>color correct with a color decision list</td>
</tr>
<tr>
<td><a href="command-line-options.html#channel">-channel <var>type</var></a></td>
<td>apply option to select image channels</td>
</tr>
<tr>
<td><a href="command-line-options.html#charcoal">-charcoal <var>radius</var></a></td>
<td>simulate a charcoal drawing</td>
</tr>
<tr>
<td><a href="command-line-options.html#chop">-chop <var>geometry</var></a></td>
<td>remove pixels from the image interior</td>
</tr>
<tr>
<td><a href="command-line-options.html#clamp">-clamp</a></td>
<td>set each pixel whose value is below zero to zero and any the pixel whose value is above the quantum range to the quantum range (e.g. 65535) otherwise the pixel value remains unchanged.</td>
</tr>
<tr>
<td><a href="command-line-options.html#clip">-clip</a></td>
<td>clip along the first path from the 8BIM profile</td>
</tr>
<tr>
<td><a href="command-line-options.html#clip-mask">-clip-mask</a> <var>filename</var></td>
<td>associate clip mask with the image</td>
</tr>
<tr>
<td><a href="command-line-options.html#clip-path">-clip-path <var>id</var></a></td>
<td>clip along a named path from the 8BIM profile</td>
</tr>
<tr>
<td><a href="command-line-options.html#clone">-clone <var>index</var></a></td>
<td>clone an image</td>
</tr>
<tr>
<td><a href="command-line-options.html#clut">-clut</a></td>
<td>apply a color lookup table to the image</td>
</tr>
<tr>
<td><a href="command-line-options.html#connected-components">-connected-components <var>connectivity</var></a></td>
<td>connected-components uniquely labeled, choose from 4 or 8 way connectivity</td>
</tr>
<tr>
<td><a href="command-line-options.html#contrast-stretch">-contrast-stretch <var>geometry</var></a></td>
<td>improve the contrast in an image by `stretching' the range of intensity value</td>
</tr>
<tr>
<td><a href="command-line-options.html#coalesce">-coalesce</a></td>
<td>merge a sequence of images</td>
</tr>
<tr>
<td><a href="command-line-options.html#colorize">-colorize <var>value</var></a></td>
<td>colorize the image with the fill color</td>
</tr>
<tr>
<td><a href="command-line-options.html#color-matrix">-color-matrix <var>matrix</var></a></td>
<td>apply color correction to the image.</td>
</tr>
<tr>
<td><a href="command-line-options.html#colors">-colors <var>value</var></a></td>
<td>preferred number of colors in the image</td>
</tr>
<tr>
<td><a href="command-line-options.html#colorspace">-colorspace <var>type</var></a></td>
<td>set image colorspace</td>
</tr>
<tr>
<td><a href="command-line-options.html#combine">-combine</a></td>
<td>combine a sequence of images</td>
</tr>
<tr>
<td><a href="command-line-options.html#comment">-comment <var>string</var></a></td>
<td>annotate image with comment</td>
</tr>
<tr>
<td><a href="command-line-options.html#compare">-compare</a></td>
<td>compare image</td>
</tr>
<tr>
<td><a href="command-line-options.html#complex">-complex<var>operator</var></a></td>
<td>perform complex mathematics on an image sequence</td>
</tr>
<tr>
<td><a href="command-line-options.html#compose">-compose <var>operator</var></a></td>
<td>set image composite operator</td>
</tr>
<tr>
<td><a href="command-line-options.html#composite">-composite</a></td>
<td>composite image</td>
</tr>
<tr>
<td><a href="command-line-options.html#compress">-compress <var>type</var></a></td>
<td>image compression type</td>
</tr>
<tr>
<td><a href="command-line-options.html#contrast">-contrast</a></td>
<td>enhance or reduce the image contrast</td>
</tr>
<tr>
<td><a href="command-line-options.html#convolve">-convolve <var>coefficients</var></a></td>
<td>apply a convolution kernel to the image</td>
</tr>
<tr>
<td><a href="command-line-options.html#copy">-copy <var>geometry</var> <var>offset</var></a></td>
<td>copy pixels from one area of an image to another</td>
</tr>
<tr>
<td><a href="command-line-options.html#crop">-crop <var>geometry</var></a></td>
<td>crop the image</td>
</tr>
<tr>
<td><a href="command-line-options.html#cycle">-cycle <var>amount</var></a></td>
<td>cycle the image colormap</td>
</tr>
<tr>
<td><a href="command-line-options.html#decipher">-decipher <var>filename</var></a></td>
<td>convert cipher pixels to plain</td>
</tr>
<tr>
<td><a href="command-line-options.html#debug">-debug <var>events</var></a></td>
<td>display copious debugging information</td>
</tr>
<tr>
<td><a href="command-line-options.html#define">-define <var>format:option</var></a></td>
<td>define one or more image format options</td>
</tr>
<tr>
<td><a href="command-line-options.html#deconstruct">-deconstruct</a></td>
<td>break down an image sequence into constituent parts</td>
</tr>
<tr>
<td><a href="command-line-options.html#delay">-delay <var>value</var></a></td>
<td>display the next image after pausing</td>
</tr>
<tr>
<td><a href="command-line-options.html#delete">-delete <var>index</var></a></td>
<td>delete the image from the image sequence</td>
</tr>
<tr>
<td><a href="command-line-options.html#density">-density <var>geometry</var></a></td>
<td>horizontal and vertical density of the image</td>
</tr>
<tr>
<td><a href="command-line-options.html#depth">-depth <var>value</var></a></td>
<td>image depth</td>
</tr>
<tr>
<td><a href="command-line-options.html#despeckle">-despeckle</a></td>
<td>reduce the speckles within an image</td>
</tr>
<tr>
<td><a href="command-line-options.html#direction">-direction <var>type</var></a></td>
<td>render text right-to-left or left-to-right</td>
</tr>
<tr>
<td><a href="command-line-options.html#display">-display <var>server</var></a></td>
<td>get image or font from this X server</td>
</tr>
<tr>
<td><a href="command-line-options.html#dispose">-dispose <var>method</var></a></td>
<td>layer disposal method</td>
</tr>
<tr>
<td><a href="command-line-options.html#distribute-cache">-distribute-cache <var>port</var></a></td>
<td>launch a distributed pixel cache server</td>
</tr>
<tr>
<td><a href="command-line-options.html#distort">-distort <var>type coefficients</var></a></td>
<td>distort image</td>
</tr>
<tr>
<td><a href="command-line-options.html#dither">-dither <var>method</var></a></td>
<td>apply error diffusion to image</td>
</tr>
<tr>
<td><a href="command-line-options.html#draw">-draw <var>string</var></a></td>
<td>annotate the image with a graphic primitive</td>
</tr>
<tr>
<td><a href="command-line-options.html#duplicate">-duplicate <var>count,indexes</var></a></td>
<td>duplicate an image one or more times</td>
</tr>
<tr>
<td><a href="command-line-options.html#edge">-edge <var>radius</var></a></td>
<td>apply a filter to detect edges in the image</td>
</tr>
<tr>
<td><a href="command-line-options.html#emboss">-emboss <var>radius</var></a></td>
<td>emboss an image</td>
</tr>
<tr>
<td><a href="command-line-options.html#encipher">-encipher <var>filename</var></a></td>
<td>convert plain pixels to cipher pixels</td>
</tr>
<tr>
<td><a href="command-line-options.html#encoding">-encoding <var>type</var></a></td>
<td>text encoding type</td>
</tr>
<tr>
<td><a href="command-line-options.html#endian">-endian <var>type</var></a></td>
<td>endianness (MSB or LSB) of the image</td>
</tr>
<tr>
<td><a href="command-line-options.html#enhance">-enhance</a></td>
<td>apply a digital filter to enhance a noisy image</td>
</tr>
<tr>
<td><a href="command-line-options.html#equalize">-equalize</a></td>
<td>perform histogram equalization to an image</td>
</tr>
<tr>
<td><a href="command-line-options.html#evaluate">-evaluate <var>operator value</var></a></td>
<td>evaluate an arithmetic, relational, or logical expression</td>
</tr>
<tr>
<td><a href="command-line-options.html#evaluate-sequence">-evaluate-sequence <var>operator</var></a></td>
<td>evaluate an arithmetic, relational, or logical expression for an image sequence</td>
</tr>
<tr>
<td><a href="command-line-options.html#extent">-extent <var>geometry</var></a></td>
<td>set the image size</td>
</tr>
<tr>
<td><a href="command-line-options.html#extract">-extract <var>geometry</var></a></td>
<td>extract area from image</td>
</tr>
<tr>
<td><a href="command-line-options.html#family">-family <var>name</var></a></td>
<td>render text with this font family</td>
</tr>
<tr>
<td><a href="command-line-options.html#features">-features <var>distance</var></a></td>
<td>analyze image features (e.g. contract, correlations, etc.).</td>
</tr>
<tr>
<td><a href="command-line-options.html#fft">-fft</a></td>
<td>implements the discrete Fourier transform (DFT)</td>
</tr>
<tr>
<td><a href="command-line-options.html#fill">-fill <var>color</var></a></td>
<td>color to use when filling a graphic primitive</td>
</tr>
<tr>
<td><a href="command-line-options.html#filter">-filter <var>type</var></a></td>
<td>use this filter when resizing an image</td>
</tr>
<tr>
<td><a href="command-line-options.html#flatten">-flatten</a></td>
<td>flatten a sequence of images</td>
</tr>
<tr>
<td><a href="command-line-options.html#flip">-flip</a></td>
<td>flip image in the vertical direction</td>
</tr>
<tr>
<td><a href="command-line-options.html#floodfill">-floodfill <var>geometry color</var></a></td>
<td>floodfill the image with color</td>
</tr>
<tr>
<td><a href="command-line-options.html#flop">-flop</a></td>
<td>flop image in the horizontal direction</td>
</tr>
<tr>
<td><a href="command-line-options.html#font">-font <var>name</var></a></td>
<td>render text with this font</td>
</tr>
<tr>
<td><a href="command-line-options.html#format_identify_">-format <var>string</var></a></td>
<td>output formatted image characteristics</td>
</tr>
<tr>
<td><a href="command-line-options.html#frame">-frame <var>geometry</var></a></td>
<td>surround image with an ornamental border</td>
</tr>
<tr>
<td><a href="command-line-options.html#function">-function <var>name</var></a></td>
<td>apply a function to the image</td>
</tr>
<tr>
<td><a href="command-line-options.html#fuzz">-fuzz <var>distance</var></a></td>
<td>colors within this distance are considered equal</td>
</tr>
<tr>
<td><a href="command-line-options.html#fx">-fx <var>expression</var></a></td>
<td>apply mathematical expression to an image channel(s)</td>
</tr>
<tr>
<td><a href="command-line-options.html#gamma">-gamma <var>value</var></a></td>
<td>level of gamma correction</td>
</tr>
<tr>
<td><a href="command-line-options.html#gaussian-blur">-gaussian-blur <var>geometry</var></a></td>
<td>reduce image noise and reduce detail levels</td>
</tr>
<tr>
<td><a href="command-line-options.html#geometry">-geometry <var>geometry</var></a></td>
<td>preferred size or location of the image</td>
</tr>
<tr>
<td><a href="command-line-options.html#gravity">-gravity <var>type</var></a></td>
<td>horizontal and vertical text placement</td>
</tr>
<tr>
<td><a href="command-line-options.html#intensity">-grayscale <var>method</var></a></td>
<td>convert image to grayscale</td>
</tr>
<tr>
<td><a href="command-line-options.html#green-primary">-green-primary <var>point</var></a></td>
<td>chromaticity green primary point</td>
</tr>
<tr>
<td><a href="command-line-options.html#help">-help</a></td>
<td>print program options</td>
</tr>
<tr>
<td><a href="command-line-options.html#hough-lines">-hough-lines <var>geometry</var></a></td>
<td>identify lines in the image</td>
</tr>
<tr>
<td><a href="command-line-options.html#identify">-identify</a></td>
<td>identify the format and characteristics of the image</td>
</tr>
<tr>
<td><a href="command-line-options.html#ift">-ift</a></td>
<td>implements the inverse discrete Fourier transform (DFT)</td>
</tr>
<tr>
<td><a href="command-line-options.html#implode">-implode <var>amount</var></a></td>
<td>implode image pixels about the center</td>
</tr>
<tr>
<td><a href="command-line-options.html#insert">-insert <var>index</var></a></td>
<td>insert last image into the image sequence</td>
</tr>
<tr>
<td><a href="command-line-options.html#intensity">-intensity <var>method</var></a></td>
<td>method to generate an intensity value from a pixel</td>
</tr>
<tr>
<td><a href="command-line-options.html#intent">-intent <var>type</var></a></td>
<td>type of rendering intent when managing the image color</td>
</tr>
<tr>
<td><a href="command-line-options.html#interlace">-interlace <var>type</var></a></td>
<td>type of image interlacing scheme</td>
</tr>
<tr>
<td><a href="command-line-options.html#interline-spacing">-interline-spacing <var>value</var></a></td>
<td>the space between two text lines</td>
</tr>
<tr>
<td><a href="command-line-options.html#interpolate">-interpolate <var>method</var></a></td>
<td>pixel color interpolation method</td>
</tr>
<tr>
<td><a href="command-line-options.html#interword-spacing">-interword-spacing <var>value</var></a></td>
<td>the space between two words</td>
</tr>
<tr>
<td><a href="command-line-options.html#kerning">-kerning <var>value</var></a></td>
<td>the space between two characters</td>
</tr>
<tr>
<td><a href="command-line-options.html#kuwahara">-kuwahara <var>geometry</var></a></td>
<td>edge preserving noise reduction filter</td>
</tr>
<tr>
<td><a href="command-line-options.html#label">-label <var>string</var></a></td>
<td>assign a label to an image</td>
</tr>
<tr>
<td><a href="command-line-options.html#lat">-lat <var>geometry</var></a></td>
<td>local adaptive thresholding</td>
</tr>
<tr>
<td><a href="command-line-options.html#layers">-layers <var>method</var></a></td>
<td>optimize or compare image layers</td>
</tr>
<tr>
<td><a href="command-line-options.html#level">-level <var>value</var></a></td>
<td>adjust the level of image contrast</td>
</tr>
<tr>
<td><a href="command-line-options.html#limit">-limit <var>type value</var></a></td>
<td>pixel cache resource limit</td>
</tr>
<tr>
<td><a href="command-line-options.html#linear-stretch">-linear-stretch <var>geometry</var></a></td>
<td>linear with saturation histogram stretch</td>
</tr>
<tr>
<td><a href="command-line-options.html#liquid-rescale">-liquid-rescale <var>geometry</var></a></td>
<td>rescale image with seam-carving</td>
</tr>
<tr>
<td><a href="command-line-options.html#list">-list <var>type</var></a></td>
<td>Color, Configure, Delegate, Format, Magic, Module, Resource, or Type</td>
</tr>
<tr>
<td><a href="command-line-options.html#log">-log <var>format</var></a></td>
<td>format of debugging information</td>
</tr>
<tr>
<td><a href="command-line-options.html#loop">-loop <var>iterations</var></a></td>
<td>add Netscape loop extension to your GIF animation</td>
</tr>
<tr>
<td><a href="command-line-options.html#mask">-mask <var>filename</var></a></td>
<td>associate a mask with the image</td>
</tr>
<tr>
<td><a href="command-line-options.html#mattecolor">-mattecolor <var>color</var></a></td>
<td>frame color</td>
</tr>
<tr>
<td><a href="command-line-options.html#median">-median <var>radius</var></a></td>
<td>apply a median filter to the image</td>
</tr>
<tr>
<td><a href="command-line-options.html#mean-shift">-mean-shift <var>geometry</var></a></td>
<td>delineate arbitrarily shaped clusters in the image</td>
</tr>
<tr>
<td><a href="command-line-options.html#metric">-metric <var>type</var></a></td>
<td>measure differences between images with this metric</td>
</tr>
<tr>
<td><a href="command-line-options.html#mode">-mode <var>radius</var></a></td>
<td>make each pixel the 'predominant color' of the neighborhood</td>
</tr>
<tr>
<td><a href="command-line-options.html#modulate">-modulate <var>value</var></a></td>
<td>vary the brightness, saturation, and hue</td>
</tr>
<tr>
<td><a href="command-line-options.html#moments">-moments</a></td>
<td>display image moments.</td>
</tr>
<tr>
<td><a href="command-line-options.html#monitor">-monitor</a></td>
<td>monitor progress</td>
</tr>
<tr>
<td><a href="command-line-options.html#monochrome">-monochrome</a></td>
<td>transform image to black and white</td>
</tr>
<tr>
<td><a href="command-line-options.html#morph">-morph <var>value</var></a></td>
<td>morph an image sequence</td>
</tr>
<tr>
<td><a href="command-line-options.html#morphology">-morphology <var>method</var></a> <var>kernel</var></td>
<td>apply a morphology method to the image</td>
</tr>
<tr>
<td><a href="command-line-options.html#motion-blur">-motion-blur <var>geometry</var></a></td>
<td>simulate motion blur</td>
</tr>
<tr>
<td><a href="command-line-options.html#negate">-negate</a></td>
<td>replace each pixel with its complementary color </td>
</tr>
<tr>
<td><a href="command-line-options.html#noise">-noise <var>radius</var></a></td>
<td>add or reduce noise in an image</td>
</tr>
<tr>
<td><a href="command-line-options.html#normalize">-normalize</a></td>
<td>transform image to span the full range of colors</td>
</tr>
<tr>
<td><a href="command-line-options.html#opaque">-opaque <var>color</var></a></td>
<td>change this color to the fill color</td>
</tr>
<tr>
<td><a href="command-line-options.html#ordered-dither">-ordered-dither <var>NxN</var></a></td>
<td>ordered dither the image</td>
</tr>
<tr>
<td><a href="command-line-options.html#orient">-orient <var>type</var></a></td>
<td>image orientation</td>
</tr>
<tr>
<td><a href="command-line-options.html#page">-page <var>geometry</var></a></td>
<td>size and location of an image canvas (setting)</td>
</tr>
<tr>
<td><a href="command-line-options.html#paint">-paint <var>radius</var></a></td>
<td>simulate an oil painting</td>
</tr>
<tr>
<td><a href="command-line-options.html#perceptible">-perceptible</a></td>
<td>set each pixel whose value is less than |<var>epsilon</var>| to <var>-epsilon</var> or <var>epsilon</var> (whichever is closer) otherwise the pixel value remains unchanged.</td>
</tr>
<tr>
<td><a href="command-line-options.html#ping">-ping</a></td>
<td>efficiently determine image attributes</td>
</tr>
<tr>
<td><a href="command-line-options.html#pointsize">-pointsize <var>value</var></a></td>
<td>font point size</td>
</tr>
<tr>
<td><a href="command-line-options.html#polaroid">-polaroid <var>angle</var></a></td>
<td>simulate a Polaroid picture</td>
</tr>
<tr>
<td><a href="command-line-options.html#poly">-poly <var>terms</var></a></td>
<td>build a polynomial from the image sequence and the corresponding terms (coefficients and degree pairs).</td>
</tr>
<tr>
<td><a href="command-line-options.html#posterize">-posterize <var>levels</var></a></td>
<td>reduce the image to a limited number of color levels</td>
</tr>
<tr>
<td><a href="command-line-options.html#precision">-precision <var>value</var></a></td>
<td>set the maximum number of significant digits to be printed</td>
</tr>
<tr>
<td><a href="command-line-options.html#preview">-preview <var>type</var></a></td>
<td>image preview type</td>
</tr>
<tr>
<td><a href="command-line-options.html#print">-print <var>string</var></a></td>
<td>interpret string and print to console</td>
</tr>
<tr>
<td><a href="command-line-options.html#process">-process <var>image-filter</var></a></td>
<td>process the image with a custom image filter</td>
</tr>
<tr>
<td><a href="command-line-options.html#profile">-profile <var>filename</var></a></td>
<td>add, delete, or apply an image profile</td>
</tr>
<tr>
<td><a href="command-line-options.html#quality">-quality <var>value</var></a></td>
<td>JPEG/MIFF/PNG compression level</td>
</tr>
<tr>
<td><a href="command-line-options.html#quantize">-quantize <var>colorspace</var></a></td>
<td>reduce image colors in this colorspace</td>
</tr>
<tr>
<td><a href="command-line-options.html#quiet">-quiet</a></td>
<td>suppress all warning messages</td>
</tr>
<tr>
<td><a href="command-line-options.html#radial-blur">-radial-blur <var>angle</var></a></td>
<td>radial blur the image</td>
</tr>
<tr>
<td><a href="command-line-options.html#raise">-raise <var>value</var></a></td>
<td>lighten/darken image edges to create a 3-D effect</td>
</tr>
<tr>
<td><a href="command-line-options.html#random-threshold">-random-threshold <var>low,high</var></a></td>
<td>random threshold the image</td>
</tr>
<tr>
<td><a href="command-line-options.html#red-primary">-red-primary <var>point</var></a></td>
<td>chromaticity red primary point</td>
</tr>
<tr>
<td><a href="command-line-options.html#regard-warnings">-regard-warnings</a></td>
<td>pay attention to warning messages.</td>
</tr>
<tr>
<td><a href="command-line-options.html#region">-region <var>geometry</var></a></td>
<td>apply options to a portion of the image</td>
</tr>
<tr>
<td><a href="command-line-options.html#remap">-remap <var>filename</var></a></td>
<td>transform image colors to match this set of colors</td>
</tr>
<tr>
<td><a href="command-line-options.html#render">-render</a></td>
<td>render vector graphics</td>
</tr>
<tr>
<td><a href="command-line-options.html#repage">-repage <var>geometry</var></a></td>
<td>size and location of an image canvas</td>
</tr>
<tr>
<td><a href="command-line-options.html#resample">-resample <var>geometry</var></a></td>
<td>change the resolution of an image</td>
</tr>
<tr>
<td><a href="command-line-options.html#resize">-resize <var>geometry</var></a></td>
<td>resize the image</td>
</tr>
<tr>
<td><a href="command-line-options.html#respect-parentheses">-respect-parentheses</a></td>
<td>settings remain in effect until parenthesis boundary.</td>
</tr>
<tr>
<td><a href="command-line-options.html#roll">-roll <var>geometry</var></a></td>
<td>roll an image vertically or horizontally</td>
</tr>
<tr>
<td><a href="command-line-options.html#rotate">-rotate <var>degrees</var></a></td>
<td>apply Paeth rotation to the image</td>
</tr>
<tr>
<td><a href="command-line-options.html#sample">-sample <var>geometry</var></a></td>
<td>scale image with pixel sampling</td>
</tr>
<tr>
<td><a href="command-line-options.html#sampling-factor">-sampling-factor <var>geometry</var></a></td>
<td>horizontal and vertical sampling factor</td>
</tr>
<tr>
<td><a href="command-line-options.html#scale">-scale <var>geometry</var></a></td>
<td>scale the image</td>
</tr>
<tr>
<td><a href="command-line-options.html#scene">-scene <var>value</var></a></td>
<td>image scene number</td>
</tr>
<tr>