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18 <meta name="Description" content="ImageMagick® is a software suite to create, edit, and compose bitmap images. It can read, convert and write images in a variety of formats (about 100) including GIF, JPEG, JPEG-2000, PNG, PDF, PhotoCD, TIFF, and DPX. Use ImageMagick to translate, flip, mirror, rotate, scale, shear and transform images, adjust image colors, apply various special effects, or draw text, lines, polygons, ellipses and Bézier curves. ImageMagick is free software delivered as a ready-to-run binary distribution or as source code that you can freely use, copy, modify, and distribute. Its license is compatible with the GPL. It runs on all major operating systems. The functionality of ImageMagick is typically utilized from the command line or you can use the features from programs written in your favorite programming language. Choose from these interfaces: MagickCore (C), MagickWand (C), ChMagick (Ch), Magick++ (C++), JMagick (Java), L-Magick (Lisp), PascalMagick (Pascal), PerlMagick (Perl), MagickWand for PHP (PHP), PythonMagick (Python), RMagick (Ruby), or TclMagick (Tcl/TK). With a language interface, use ImageMagick to modify or create images automagically and dynamically."/>
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149<p class="navigation-index">[<a href="#usage">Example Usage</a> &bull; <a href="#options">Option Summary</a>]</p>
150
151<div class="doc-section">
152<p>Use the <kbd>display</kbd> program to display an image or image sequence on any X server. See <a href="../www/command-line-processing.html">Command Line Processing</a> for advice on how to structure your <kbd>display</kbd> command or see below for example usages of the command.</p>
153</div>
154
155<h2><a name="usage"></a>Example Usage</h2>
156<div class="doc-section">
157
158<p>We list a few examples of the <kbd>display</kbd> command here to illustrate its usefulness and ease of use. To get started, lets display an image in the JPEG format:</p>
159
160<p class='crt'><span class="crtprompt"> $magick&gt; </span><span class='crtin'>display rose.jpg</span></p>
161<p>To tile a slate texture onto the root window, use:</p>
162
163<p class='crt'><span class="crtprompt"> $magick&gt; </span><span class='crtin'>display -size 1280x1024 -window root slate.png</span></p>
164<p>To display a visual image directory of all your JPEG images, use:</p>
165
166<p class='crt'><span class="crtprompt"> $magick&gt; </span><span class='crtin'>display 'vid:*.jpg'</span></p>
167<p>You can find additional examples of using <kbd>display</kbd> in <a href="http://www-106.ibm.com/developerworks/library/l-graf/?ca=dnt-428">Graphics from the Command Line</a>. Further discussion is available in <a href="http://www-106.ibm.com/developerworks/library/l-graf2/?ca=dgr-lnxw15GraphicsLine">More Graphics from the Command Line</a> and <a href="http://www.imagemagick.org/Usage/">Examples of ImageMagick Usage</a>.</p>
168
169</div>
170
171<h2><a name="options"></a>Option Summary</h2>
172<div class="doc-section">
173
174<p>The <kbd>display</kbd> command recognizes these options. Click on an option to get more details about how that option works.</p>
175
176<table class="doc">
177 <tbody>
178 <tr>
179 <th align="left">Option</th>
180 <th align="left">Description</th>
181 </tr>
182
183 <tr>
184 <td valign="top"><a href="../www/command-line-options.html#alpha">-alpha</a></td>
185 <td valign="top">on, activate, off, deactivate, set, opaque, copy",
186transparent, extract, background, or shape the alpha channel</td>
187 </tr>
188
189 <tr>
190 <td valign="top"><a href="../www/command-line-options.html#antialias">-antialias</a></td>
191 <td valign="top">remove pixel-aliasing</td>
192 </tr>
193
194 <tr>
195 <td valign="top"><a href="../www/command-line-options.html#authenticate">-authenticate <em class="option">value</em></a></td>
196 <td valign="top">decrypt image with this password</td>
197 </tr>
198
199 <tr>
200 <td valign="top"><a href="../www/command-line-options.html#backdrop">-backdrop</a></td>
201 <td valign="top">display image centered on a backdrop</td>
202 </tr>
203
204 <tr>
205 <td valign="top"><a href="../www/command-line-options.html#background">-background <em class="option">color</em></a></td>
206 <td valign="top">background color</td>
207 </tr>
208
209 <tr>
210 <td valign="top"><a href="../www/command-line-options.html#border">-border <em class="option">geometry</em></a></td>
211 <td valign="top">surround image with a border of color</td>
212 </tr>
213
214 <tr>
215 <td valign="top"><a href="../www/command-line-options.html#bordercolor">-bordercolor <em class="option">color</em></a></td>
216 <td valign="top">border color</td>
217 </tr>
218
219 <tr>
220 <td valign="top"><a href="../www/command-line-options.html#channel">-channel <em class="option">type</em></a></td>
221 <td valign="top">apply option to select image channels</td>
222 </tr>
223
224 <tr>
225 <td valign="top"><a href="../www/command-line-options.html#clip">-clip</a></td>
226 <td valign="top">clip along the first path from the 8BIM profile</td>
227 </tr>
228
229 <tr>
230 <td valign="top"><a href="../www/command-line-options.html#clip-path">-clip-path <em class="option">id</em></a></td>
231 <td valign="top">clip along a named path from the 8BIM profile</td>
232 </tr>
233
234 <tr>
235 <td valign="top"><a href="../www/command-line-options.html#coalesce">-coalesce</a></td>
236 <td valign="top">merge a sequence of images</td>
237 </tr>
238
239 <tr>
240 <td valign="top"><a href="../www/command-line-options.html#colormap">-colormap <em class="option">type</em></a></td>
241 <td valign="top">Shared or Private</td>
242 </tr>
243
244 <tr>
245 <td valign="top"><a href="../www/command-line-options.html#colors">-colors <em class="option">value</em></a></td>
246 <td valign="top">preferred number of colors in the image</td>
247 </tr>
248
249 <tr>
250 <td valign="top"><a href="../www/command-line-options.html#colorspace">-colorspace <em class="option">type</em></a></td>
251 <td valign="top">set image colorspace</td>
252 </tr>
253
254 <tr>
255 <td valign="top"><a href="../www/command-line-options.html#comment">-comment <em class="option">string</em></a></td>
256 <td valign="top">annotate image with comment</td>
257 </tr>
258
259 <tr>
260 <td valign="top"><a href="../www/command-line-options.html#compress">-compress <em class="option">type</em></a></td>
261 <td valign="top">image compression type</td>
262 </tr>
263
264 <tr>
265 <td valign="top"><a href="../www/command-line-options.html#contrast">-contrast</a></td>
266 <td valign="top">enhance or reduce the image contrast</td>
267 </tr>
268
269 <tr>
270 <td valign="top"><a href="../www/command-line-options.html#crop">-crop <em class="option">geometry</em></a></td>
271 <td valign="top">preferred size and location of the cropped image</td>
272 </tr>
273
274 <tr>
275 <td valign="top"><a href="../www/command-line-options.html#debug">-debug <em class="option">events</em></a></td>
276 <td valign="top">display copious debugging information</td>
277 </tr>
278
279 <tr>
280 <td valign="top"><a href="../www/command-line-options.html#decipher">-decipher <em class="option">filename</em></a></td>
281 <td valign="top">convert cipher pixels to plain</td>
282 </tr>
283
284 <tr>
285 <td valign="top"><a href="../www/command-line-options.html#define">-define <em class="option">format:option</em></a></td>
286 <td valign="top">define one or more image format options</td>
287 </tr>
288
289 <tr>
290 <td valign="top"><a href="../www/command-line-options.html#delay">-delay <em class="option">value</em></a></td>
291 <td valign="top">display the next image after pausing</td>
292 </tr>
293
294 <tr>
295 <td valign="top"><a href="../www/command-line-options.html#density">-density <em class="option">geometry</em></a></td>
296 <td valign="top">horizontal and vertical density of the image</td>
297 </tr>
298
299 <tr>
300 <td valign="top"><a href="../www/command-line-options.html#depth">-depth <em class="option">value</em></a></td>
301 <td valign="top">image depth</td>
302 </tr>
303
304 <tr>
305 <td valign="top"><a href="../www/command-line-options.html#despeckle">-despeckle</a></td>
306 <td valign="top">reduce the speckles within an image</td>
307 </tr>
308
309 <tr>
310 <td valign="top"><a href="../www/command-line-options.html#display">-display <em class="option">server</em></a></td>
311 <td valign="top">get image or font from this X server</td>
312 </tr>
313
314 <tr>
315 <td valign="top"><a href="../www/command-line-options.html#dispose">-dispose <em class="option">method</em></a></td>
316 <td valign="top">layer disposal method</td>
317 </tr>
318
319 <tr>
320 <td valign="top"><a href="../www/command-line-options.html#dither">-dither <em class="option">method</em></a></td>
321 <td valign="top">apply error diffusion to image</td>
322 </tr>
323
324 <tr>
325 <td valign="top"><a href="../www/command-line-options.html#edge">-edge <em class="option">radius</em></a></td>
326 <td valign="top">apply a filter to detect edges in the image</td>
327 </tr>
328
329 <tr>
330 <td valign="top"><a href="../www/command-line-options.html#endian">-endian <em class="option">type</em></a></td>
331 <td valign="top">endianness (MSB or LSB) of the image</td>
332 </tr>
333
334 <tr>
335 <td valign="top"><a href="../www/command-line-options.html#enhance">-enhance</a></td>
336 <td valign="top">apply a digital filter to enhance a noisy image</td>
337 </tr>
338
339 <tr>
340 <td valign="top"><a href="../www/command-line-options.html#equalize">-equalize</a></td>
341 <td valign="top">perform histogram equalization to an image</td>
342 </tr>
343
344 <tr>
345 <td valign="top"><a href="../www/command-line-options.html#extract">-extract <em class="option">geometry</em></a></td>
346 <td valign="top">extract area from image</td>
347 </tr>
348
349 <tr>
350 <td valign="top"><a href="../www/command-line-options.html#filter">-filter <em class="option">type</em></a></td>
351 <td valign="top">use this filter when resizing an image</td>
352 </tr>
353
354 <tr>
355 <td valign="top"><a href="../www/command-line-options.html#flatten">-flatten</a></td>
356 <td valign="top">flatten a sequence of images</td>
357 </tr>
358
359 <tr>
360 <td valign="top"><a href="../www/command-line-options.html#flip">-flip</a></td>
361 <td valign="top">flip image in the vertical direction</td>
362 </tr>
363
364 <tr>
365 <td valign="top"><a href="../www/command-line-options.html#flop">-flop</a></td>
366 <td valign="top">flop image in the horizontal direction</td>
367 </tr>
368
369 <tr>
370 <td valign="top"><a href="../www/command-line-options.html#frame">-frame <em class="option">geometry</em></a></td>
371 <td valign="top">surround image with an ornamental border</td>
372 </tr>
373
374 <tr>
375 <td valign="top"><a href="../www/command-line-options.html#fuzz">-fuzz <em class="option">distance</em></a></td>
376 <td valign="top">colors within this distance are considered equal</td>
377 </tr>
378
379 <tr>
380 <td valign="top"><a href="../www/command-line-options.html#gamma">-gamma <em class="option">value</em></a></td>
381 <td valign="top">level of gamma correction</td>
382 </tr>
383
384 <tr>
385 <td valign="top"><a href="../www/command-line-options.html#geometry">-geometry <em class="option">geometry</em></a></td>
386 <td valign="top">preferred size or location of the image</td>
387 </tr>
388
389 <tr>
390 <td valign="top"><a href="../www/command-line-options.html#gravity">-gravity <em class="option">geometry</em></a></td>
391 <td valign="top">horizontal and vertical backdrop placement</td>
392 </tr>
393
394 <tr>
395 <td valign="top"><a href="../www/command-line-options.html#help">-help</a></td>
396 <td valign="top">print program options</td>
397 </tr>
398
399 <tr>
400 <td valign="top"><a href="../www/command-line-options.html#identify">-identify</a></td>
401 <td valign="top">identify the format and characteristics of the image</td>
402 </tr>
403
404 <tr>
405 <td valign="top"><a href="../www/command-line-options.html#immutable">-immutable <em class="option">type</em></a></td>
406 <td valign="top">prohibit image edits</td>
407 </tr>
408
409 <tr>
410 <td valign="top"><a href="../www/command-line-options.html#interlace">-interlace <em class="option">type</em></a></td>
411 <td valign="top">type of image interlacing scheme</td>
412 </tr>
413
414 <tr>
415 <td valign="top"><a href="../www/command-line-options.html#interpolate">-interpolate <em class="option">method</em></a></td>
416 <td valign="top">pixel color interpolation method</td>
417 </tr>
418
419 <tr>
420 <td valign="top"><a href="../www/command-line-options.html#label">-label <em class="option">name</em></a></td>
421 <td valign="top">assign a label to an image</td>
422 </tr>
423
424 <tr>
425 <td valign="top"><a href="../www/command-line-options.html#limit">-limit <em class="option">type value</em></a></td>
426 <td valign="top">pixel cache resource limit</td>
427 </tr>
428
429 <tr>
430 <td valign="top"><a href="../www/command-line-options.html#log">-log <em class="option">format</em></a></td>
431 <td valign="top">format of debugging information</td>
432 </tr>
433
434 <tr>
435 <td valign="top"><a href="../www/command-line-options.html#map">-map <em class="option">filename</em></a></td>
436 <td valign="top">transform image colors to match this set of colors</td>
437 </tr>
438
439 <tr>
440 <td valign="top"><a href="../www/command-line-options.html#mattecolor">-mattecolor <em class="option">color</em></a></td>
441 <td valign="top">frame color</td>
442 </tr>
443
444 <tr>
445 <td valign="top"><a href="../www/command-line-options.html#monitor">-monitor</a></td>
446 <td valign="top">monitor progress</td>
447 </tr>
448
449 <tr>
450 <td valign="top"><a href="../www/command-line-options.html#monochrome">-monochrome</a></td>
451 <td valign="top">transform image to black and white</td>
452 </tr>
453
454 <tr>
455 <td valign="top"><a href="../www/command-line-options.html#negate">-negate</a></td>
456 <td valign="top">replace every pixel with its complementary color </td>
457 </tr>
458
459 <tr>
460 <td valign="top"><a href="../www/command-line-options.html#normalize">-normalize</a></td>
461 <td valign="top">transform image to span the full range of colors</td>
462 </tr>
463
464 <tr>
465 <td valign="top"><a href="../www/command-line-options.html#page">-page <em class="option">geometry</em></a></td>
466 <td valign="top">size and location of an image canvas (setting)</td>
467 </tr>
468
469 <tr>
470 <td valign="top"><a href="../www/command-line-options.html#profile">-profile <em class="option">filename</em></a></td>
471 <td valign="top">add, delete, or apply an image profile</td>
472 </tr>
473
474 <tr>
475 <td valign="top"><a href="../www/command-line-options.html#quantize">-quantize <em class="option">colorspace</em></a></td>
476 <td valign="top">reduce image colors in this colorspace</td>
477 </tr>
478
479 <tr>
480 <td valign="top"><a href="../www/command-line-options.html#quiet">-quiet</a></td>
481 <td valign="top">suppress all warning messages</td>
482 </tr>
483
484 <tr>
485 <td valign="top"><a href="../www/command-line-options.html#raise">-raise <em class="option">value</em></a></td>
486 <td valign="top">lighten/darken image edges to create a 3-D effect</td>
487 </tr>
488
489 <tr>
490 <td valign="top"><a href="../www/command-line-options.html#regard-warnings">-regard-warnings</a></td>
491 <td valign="top">pay attention to warning messages.</td>
492 </tr>
493
494 <tr>
495 <td valign="top"><a href="../www/command-line-options.html#remote">-remote <em class="option">command</em></a></td>
496 <td valign="top">execute a command in an remote display process</td>
497 </tr>
498
499 <tr>
500 <td valign="top"><a href="../www/command-line-options.html#resample">-resample <em class="option">geometry</em></a></td>
501 <td valign="top">change the resolution of an image</td>
502 </tr>
503
504 <tr>
505 <td valign="top"><a href="../www/command-line-options.html#resize">-resize <em class="option">geometry</em></a></td>
506 <td valign="top">resize the image</td>
507 </tr>
508
509 <tr>
510 <td valign="top"><a href="../www/command-line-options.html#respect-parentheses">-respect-parentheses</a></td>
511 <td valign="top">settings remain in effect until parenthesis boundary.</td>
512 </tr>
513
514 <tr>
515 <td valign="top"><a href="../www/command-line-options.html#roll">-roll <em class="option">geometry</em></a></td>
516 <td valign="top">roll an image vertically or horizontally</td>
517 </tr>
518
519 <tr>
520 <td valign="top"><a href="../www/command-line-options.html#rotate">-rotate <em class="option">degrees</em></a></td>
521 <td valign="top">apply Paeth rotation to the image</td>
522 </tr>
523
524 <tr>
525 <td valign="top"><a href="../www/command-line-options.html#sample">-sample <em class="option">geometry</em></a></td>
526 <td valign="top">scale image with pixel sampling</td>
527 </tr>
528
529 <tr>
530 <td valign="top"><a href="../www/command-line-options.html#sampling-factor">-sampling-factor <em class="option">geometry</em></a></td>
531 <td valign="top">horizontal and vertical sampling factor</td>
532 </tr>
533
534 <tr>
535 <td valign="top"><a href="../www/command-line-options.html#scene">-scene <em class="option">value</em></a></td>
536 <td valign="top">image scene number</td>
537 </tr>
538
539 <tr>
540 <td valign="top"><a href="../www/command-line-options.html#seed">-seed <em class="option">value</em></a></td>
541 <td valign="top">seed a new sequence of pseudo-random numbers</td>
542 </tr>
543
544 <tr>
545 <td valign="top"><a href="../www/command-line-options.html#segment">-segment <em class="option">values</em></a></td>
546 <td valign="top">segment an image</td>
547 </tr>
548
549 <tr>
550 <td valign="top"><a href="../www/command-line-options.html#set">-set <em class="option">attribute value</em></a></td>
551 <td valign="top">set an image attribute</td>
552 </tr>
553
554 <tr>
555 <td valign="top"><a href="../www/command-line-options.html#sharpen">-sharpen <em class="option">geometry</em></a></td>
556 <td valign="top">sharpen the image</td>
557 </tr>
558
559 <tr>
560 <td valign="top"><a href="../www/command-line-options.html#size">-size <em class="option">geometry</em></a></td>
561 <td valign="top">width and height of image</td>
562 </tr>
563
564 <tr>
565 <td valign="top"><a href="../www/command-line-options.html#strip">-strip</a></td>
566 <td valign="top">strip image of all profiles and comments</td>
567 </tr>
568
569 <tr>
570 <td valign="top"><a href="../www/command-line-options.html#transparent-color">-transparent-color <em class="option">color</em></a></td>
571 <td valign="top">transparent color</td>
572 </tr>
573
574 <tr>
575 <td valign="top"><a href="../www/command-line-options.html#black-threshold">-black-threshold <em class="option">value</em></a></td>
576 <td valign="top">force all pixels below the threshold into black</td>
577 </tr>
578
579 <tr>
580 <td valign="top"><a href="../www/command-line-options.html#trim">-trim</a></td>
581 <td valign="top">trim image edges</td>
582 </tr>
583
584 <tr>
585 <td valign="top"><a href="../www/command-line-options.html#update">-update <em class="option">seconds</em></a></td>
586 <td valign="top">detect when image file is modified and redisplay</td>
587 </tr>
588
589 <tr>
590 <td valign="top"><a href="../www/command-line-options.html#verbose">-verbose</a></td>
591 <td valign="top">print detailed information about the image</td>
592 </tr>
593
594 <tr>
595 <td valign="top"><a href="../www/command-line-options.html#version">-version</a></td>
596 <td valign="top">print version information</td>
597 </tr>
598
599 <tr>
600 <td valign="top"><a href="../www/command-line-options.html#virtual-pixel">-virtual-pixel <em class="option">method</em></a></td>
601 <td valign="top">access method for pixels outside the boundaries of the image</td>
602 </tr>
603
604 <tr>
605 <td valign="top"><a href="../www/command-line-options.html#visual">-visual</a></td>
606 <td valign="top">display image using this visual type</td>
607 </tr>
608
609 <tr>
610 <td valign="top"><a href="../www/command-line-options.html#write">-window <em class="option">id</em></a></td>
611 <td valign="top">display image to background of this window</td>
612 </tr>
613
614 <tr>
615 <td valign="top"><a href="../www/command-line-options.html#write">-window-group <em class="option">id</em></a></td>
616 <td valign="top">exit program when this window id is destroyed</td>
617 </tr>
618
619 <tr>
620 <td valign="top"><a href="../www/command-line-options.html#write">-write <em class="option">filename</em></a></td>
621 <td valign="top">write images to this file</td>
622 </tr>
623 </tbody>
624</table>
625
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