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177 <h1>ImageMagick Display Command-line Tool</h1>
178 <p class="navigation-index">[<a href="display.html#usage">Example Usage</a> • <a href="display.html#options">Option Summary</a>]</p>
180 <div class="doc-section">
181 <p>Use the <code>display</code> program to display an image or image sequence on any X server. See <a href="command-line-processing.html">Command Line Processing</a> for advice on how to structure your <code>display</code> command or see below for example usages of the command.</p>
184 <h2><a id="usage"></a>Example Usage</h2>
185 <div class="doc-section">
187 <p>We list a few examples of the <code>display</code> command here to illustrate its usefulness and ease of use. To get started, lets display an image in the JPEG format:</p>
189 <p class="crt"><span class="crtprompt"> $ </span><span class="crtin">display rose.jpg</span></p>
190 <p>To tile a slate texture onto the root window, use:</p>
192 <p class="crt"><span class="crtprompt"> $ </span><span class="crtin">display -size 1280x1024 -window root slate.png</span></p>
193 <p>To display a visual image directory of all your JPEG images, use:</p>
195 <p class="crt"><span class="crtprompt"> $ </span><span class="crtin">display 'vid:*.jpg'</span></p>
196 <p>The display program defaults to the X screen resolution. To display vecotr formats at their intended size, override the default resolution:</p>
198 <p class="crt"><span class="crtprompt"> $ </span><span class="crtin">display -density 72 drawing.svg</span></p>
199 <p>You can find additional examples of using <code>display</code> 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>
203 <h2><a id="options"></a>Option Summary</h2>
204 <div class="doc-section">
206 <p>The <code>display</code> command recognizes these options. Click on an option to get more details about how that option works.</p>
211 <th align="left">Option</th>
212 <th align="left">Description</th>
216 <td valign="top"><a href="command-line-options.html#alpha">-alpha</a></td>
217 <td valign="top">on, activate, off, deactivate, set, opaque, copy",
218 transparent, extract, background, or shape the alpha channel</td>
222 <td valign="top"><a href="command-line-options.html#antialias">-antialias</a></td>
223 <td valign="top">remove pixel-aliasing</td>
227 <td valign="top"><a href="command-line-options.html#authenticate">-authenticate <em class="option">value</em></a></td>
228 <td valign="top">decrypt image with this password</td>
232 <td valign="top"><a href="command-line-options.html#backdrop">-backdrop</a></td>
233 <td valign="top">display image centered on a backdrop</td>
237 <td valign="top"><a href="command-line-options.html#background">-background <em class="option">color</em></a></td>
238 <td valign="top">background color</td>
242 <td valign="top"><a href="command-line-options.html#border">-border <em class="option">geometry</em></a></td>
243 <td valign="top">surround image with a border of color</td>
247 <td valign="top"><a href="command-line-options.html#bordercolor">-bordercolor <em class="option">color</em></a></td>
248 <td valign="top">border color</td>
252 <td valign="top"><a href="command-line-options.html#channel">-channel <em class="option">type</em></a></td>
253 <td valign="top">apply option to select image channels</td>
257 <td valign="top"><a href="command-line-options.html#clip">-clip</a></td>
258 <td valign="top">clip along the first path from the 8BIM profile</td>
262 <td valign="top"><a href="command-line-options.html#clip-path">-clip-path <em class="option">id</em></a></td>
263 <td valign="top">clip along a named path from the 8BIM profile</td>
267 <td valign="top"><a href="command-line-options.html#coalesce">-coalesce</a></td>
268 <td valign="top">merge a sequence of images</td>
272 <td valign="top"><a href="command-line-options.html#colormap">-colormap <em class="option">type</em></a></td>
273 <td valign="top">Shared or Private</td>
277 <td valign="top"><a href="command-line-options.html#colors">-colors <em class="option">value</em></a></td>
278 <td valign="top">preferred number of colors in the image</td>
282 <td valign="top"><a href="command-line-options.html#colorspace">-colorspace <em class="option">type</em></a></td>
283 <td valign="top">set image colorspace</td>
287 <td valign="top"><a href="command-line-options.html#comment">-comment <em class="option">string</em></a></td>
288 <td valign="top">annotate image with comment</td>
292 <td valign="top"><a href="command-line-options.html#compress">-compress <em class="option">type</em></a></td>
293 <td valign="top">image compression type</td>
297 <td valign="top"><a href="command-line-options.html#contrast">-contrast</a></td>
298 <td valign="top">enhance or reduce the image contrast</td>
302 <td valign="top"><a href="command-line-options.html#crop">-crop <em class="option">geometry</em></a></td>
303 <td valign="top">preferred size and location of the cropped image</td>
307 <td valign="top"><a href="command-line-options.html#debug">-debug <em class="option">events</em></a></td>
308 <td valign="top">display copious debugging information</td>
312 <td valign="top"><a href="command-line-options.html#decipher">-decipher <em class="option">filename</em></a></td>
313 <td valign="top">convert cipher pixels to plain</td>
317 <td valign="top"><a href="command-line-options.html#define">-define <em class="option">format:option</em></a></td>
318 <td valign="top">define one or more image format options</td>
322 <td valign="top"><a href="command-line-options.html#delay">-delay <em class="option">value</em></a></td>
323 <td valign="top">display the next image after pausing</td>
327 <td valign="top"><a href="command-line-options.html#density">-density <em class="option">geometry</em></a></td>
328 <td valign="top">horizontal and vertical density of the image</td>
332 <td valign="top"><a href="command-line-options.html#depth">-depth <em class="option">value</em></a></td>
333 <td valign="top">image depth</td>
337 <td valign="top"><a href="command-line-options.html#despeckle">-despeckle</a></td>
338 <td valign="top">reduce the speckles within an image</td>
342 <td valign="top"><a href="command-line-options.html#display">-display <em class="option">server</em></a></td>
343 <td valign="top">get image or font from this X server</td>
347 <td valign="top"><a href="command-line-options.html#dispose">-dispose <em class="option">method</em></a></td>
348 <td valign="top">layer disposal method</td>
352 <td valign="top"><a href="command-line-options.html#dither">-dither <em class="option">method</em></a></td>
353 <td valign="top">apply error diffusion to image</td>
357 <td valign="top"><a href="command-line-options.html#edge">-edge <em class="option">radius</em></a></td>
358 <td valign="top">apply a filter to detect edges in the image</td>
362 <td valign="top"><a href="command-line-options.html#endian">-endian <em class="option">type</em></a></td>
363 <td valign="top">endianness (MSB or LSB) of the image</td>
367 <td valign="top"><a href="command-line-options.html#enhance">-enhance</a></td>
368 <td valign="top">apply a digital filter to enhance a noisy image</td>
372 <td valign="top"><a href="command-line-options.html#equalize">-equalize</a></td>
373 <td valign="top">perform histogram equalization to an image</td>
377 <td valign="top"><a href="command-line-options.html#extract">-extract <em class="option">geometry</em></a></td>
378 <td valign="top">extract area from image</td>
382 <td valign="top"><a href="command-line-options.html#filter">-filter <em class="option">type</em></a></td>
383 <td valign="top">use this filter when resizing an image</td>
387 <td valign="top"><a href="command-line-options.html#flatten">-flatten</a></td>
388 <td valign="top">flatten a sequence of images</td>
392 <td valign="top"><a href="command-line-options.html#flip">-flip</a></td>
393 <td valign="top">flip image in the vertical direction</td>
397 <td valign="top"><a href="command-line-options.html#flop">-flop</a></td>
398 <td valign="top">flop image in the horizontal direction</td>
402 <td valign="top"><a href="command-line-options.html#frame">-frame <em class="option">geometry</em></a></td>
403 <td valign="top">surround image with an ornamental border</td>
407 <td valign="top"><a href="command-line-options.html#fuzz">-fuzz <em class="option">distance</em></a></td>
408 <td valign="top">colors within this distance are considered equal</td>
412 <td valign="top"><a href="command-line-options.html#gamma">-gamma <em class="option">value</em></a></td>
413 <td valign="top">level of gamma correction</td>
417 <td valign="top"><a href="command-line-options.html#geometry">-geometry <em class="option">geometry</em></a></td>
418 <td valign="top">preferred size or location of the image</td>
422 <td valign="top"><a href="command-line-options.html#gravity">-gravity <em class="option">geometry</em></a></td>
423 <td valign="top">horizontal and vertical backdrop placement</td>
427 <td valign="top"><a href="command-line-options.html#help">-help</a></td>
428 <td valign="top">print program options</td>
432 <td valign="top"><a href="command-line-options.html#identify">-identify</a></td>
433 <td valign="top">identify the format and characteristics of the image</td>
437 <td valign="top"><a href="command-line-options.html#immutable">-immutable <em class="option">type</em></a></td>
438 <td valign="top">prohibit image edits</td>
442 <td valign="top"><a href="command-line-options.html#interlace">-interlace <em class="option">type</em></a></td>
443 <td valign="top">type of image interlacing scheme</td>
447 <td valign="top"><a href="command-line-options.html#interpolate">-interpolate <em class="option">method</em></a></td>
448 <td valign="top">pixel color interpolation method</td>
452 <td valign="top"><a href="command-line-options.html#label">-label <em class="option">name</em></a></td>
453 <td valign="top">assign a label to an image</td>
457 <td valign="top"><a href="command-line-options.html#limit">-limit <em class="option">type value</em></a></td>
458 <td valign="top">pixel cache resource limit</td>
462 <td valign="top"><a href="command-line-options.html#log">-log <em class="option">format</em></a></td>
463 <td valign="top">format of debugging information</td>
467 <td valign="top"><a href="command-line-options.html#map">-map <em class="option">filename</em></a></td>
468 <td valign="top">transform image colors to match this set of colors</td>
472 <td valign="top"><a href="command-line-options.html#mattecolor">-mattecolor <em class="option">color</em></a></td>
473 <td valign="top">frame color</td>
477 <td valign="top"><a href="command-line-options.html#monitor">-monitor</a></td>
478 <td valign="top">monitor progress</td>
482 <td valign="top"><a href="command-line-options.html#monochrome">-monochrome</a></td>
483 <td valign="top">transform image to black and white</td>
487 <td valign="top"><a href="command-line-options.html#negate">-negate</a></td>
488 <td valign="top">replace each pixel with its complementary color </td>
492 <td valign="top"><a href="command-line-options.html#normalize">-normalize</a></td>
493 <td valign="top">transform image to span the full range of colors</td>
497 <td valign="top"><a href="command-line-options.html#page">-page <em class="option">geometry</em></a></td>
498 <td valign="top">size and location of an image canvas (setting)</td>
502 <td valign="top"><a href="command-line-options.html#profile">-profile <em class="option">filename</em></a></td>
503 <td valign="top">add, delete, or apply an image profile</td>
507 <td valign="top"><a href="command-line-options.html#quantize">-quantize <em class="option">colorspace</em></a></td>
508 <td valign="top">reduce image colors in this colorspace</td>
512 <td valign="top"><a href="command-line-options.html#quiet">-quiet</a></td>
513 <td valign="top">suppress all warning messages</td>
517 <td valign="top"><a href="command-line-options.html#raise">-raise <em class="option">value</em></a></td>
518 <td valign="top">lighten/darken image edges to create a 3-D effect</td>
522 <td valign="top"><a href="command-line-options.html#regard-warnings">-regard-warnings</a></td>
523 <td valign="top">pay attention to warning messages.</td>
527 <td valign="top"><a href="command-line-options.html#remote">-remote <em class="option">command</em></a></td>
528 <td valign="top">execute a command in an remote display process</td>
532 <td valign="top"><a href="command-line-options.html#resample">-resample <em class="option">geometry</em></a></td>
533 <td valign="top">change the resolution of an image</td>
537 <td valign="top"><a href="command-line-options.html#resize">-resize <em class="option">geometry</em></a></td>
538 <td valign="top">resize the image</td>
542 <td valign="top"><a href="command-line-options.html#respect-parentheses">-respect-parentheses</a></td>
543 <td valign="top">settings remain in effect until parenthesis boundary.</td>
547 <td valign="top"><a href="command-line-options.html#roll">-roll <em class="option">geometry</em></a></td>
548 <td valign="top">roll an image vertically or horizontally</td>
552 <td valign="top"><a href="command-line-options.html#rotate">-rotate <em class="option">degrees</em></a></td>
553 <td valign="top">apply Paeth rotation to the image</td>
557 <td valign="top"><a href="command-line-options.html#sample">-sample <em class="option">geometry</em></a></td>
558 <td valign="top">scale image with pixel sampling</td>
562 <td valign="top"><a href="command-line-options.html#sampling-factor">-sampling-factor <em class="option">geometry</em></a></td>
563 <td valign="top">horizontal and vertical sampling factor</td>
567 <td valign="top"><a href="command-line-options.html#scene">-scene <em class="option">value</em></a></td>
568 <td valign="top">image scene number</td>
572 <td valign="top"><a href="command-line-options.html#seed">-seed <em class="option">value</em></a></td>
573 <td valign="top">seed a new sequence of pseudo-random numbers</td>
577 <td valign="top"><a href="command-line-options.html#segment">-segment <em class="option">values</em></a></td>
578 <td valign="top">segment an image</td>
582 <td valign="top"><a href="command-line-options.html#set">-set <em class="option">attribute value</em></a></td>
583 <td valign="top">set an image attribute</td>
587 <td valign="top"><a href="command-line-options.html#sharpen">-sharpen <em class="option">geometry</em></a></td>
588 <td valign="top">sharpen the image</td>
592 <td valign="top"><a href="command-line-options.html#size">-size <em class="option">geometry</em></a></td>
593 <td valign="top">width and height of image</td>
597 <td valign="top"><a href="command-line-options.html#strip">-strip</a></td>
598 <td valign="top">strip image of all profiles and comments</td>
602 <td valign="top"><a href="command-line-options.html#thumbnail">-thumbnail <em class="option">geometry</em></a></td>
603 <td valign="top">create a thumbnail of the image</td>
607 <td valign="top"><a href="command-line-options.html#transparent-color">-transparent-color <em class="option">color</em></a></td>
608 <td valign="top">transparent color</td>
612 <td valign="top"><a href="command-line-options.html#black-threshold">-black-threshold <em class="option">value</em></a></td>
613 <td valign="top">force all pixels below the threshold into black</td>
617 <td valign="top"><a href="command-line-options.html#trim">-trim</a></td>
618 <td valign="top">trim image edges</td>
622 <td valign="top"><a href="command-line-options.html#update">-update <em class="option">seconds</em></a></td>
623 <td valign="top">detect when image file is modified and redisplay</td>
627 <td valign="top"><a href="command-line-options.html#verbose">-verbose</a></td>
628 <td valign="top">print detailed information about the image</td>
632 <td valign="top"><a href="command-line-options.html#version">-version</a></td>
633 <td valign="top">print version information</td>
637 <td valign="top"><a href="command-line-options.html#virtual-pixel">-virtual-pixel <em class="option">method</em></a></td>
638 <td valign="top">access method for pixels outside the boundaries of the image</td>
642 <td valign="top"><a href="command-line-options.html#visual">-visual</a></td>
643 <td valign="top">display image using this visual type</td>
647 <td valign="top"><a href="command-line-options.html#write">-window <em class="option">id</em></a></td>
648 <td valign="top">display image to background of this window</td>
652 <td valign="top"><a href="command-line-options.html#write">-window-group <em class="option">id</em></a></td>
653 <td valign="top">exit program when this window id is destroyed</td>
657 <td valign="top"><a href="command-line-options.html#write">-write <em class="option">filename</em></a></td>
658 <td valign="top">write images to this file</td>
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