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gerrit-public.fairphone.software / platform / external / ImageMagick / 479d462b5cac53bce755a44ed0916903d9c03c69 / . / www / stream.html
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cristy3eaa0ef2010-03-06 20:35:26 +0000[diff] [blame]1
cristydcca3fa2010-12-29 21:50:07 +0000[diff] [blame]2<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
3 "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
cristy2bd2a982011-02-15 00:52:58 +0000[diff] [blame]4<html version="-//W3C//DTD XHTML 1.1//EN"
5 xmlns="http://www.w3.org/1999/xhtml" xml:lang="en"
6 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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8 http://www.w3.org/MarkUp/SCHEMA/xhtml11.xsd">
cristy3eaa0ef2010-03-06 20:35:26 +0000[diff] [blame]9<head>
cristy751980d2012-06-03 23:18:35 +0000[diff] [blame]10 <meta http-equiv="content-type" content="text/html; charset=UTF-8"/>
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cristyffb69ed2010-12-25 00:06:48 +0000[diff] [blame]12 <title>ImageMagick: Command-line Tools: Stream</title>
cristy751980d2012-06-03 23:18:35 +0000[diff] [blame]13 <meta http-equiv="content-language" content="en-US"/>
14 <meta http-equiv="content-type" content="text/html; charset=utf-8"/>
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27 <meta name="copyright" content="Copyright (c) 1999-2012 ImageMagick Studio LLC"/>
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cristydcca3fa2010-12-29 21:50:07 +0000[diff] [blame]29 <link rel="icon" href="../images/wand.png"/>
cristy3c98a4f2010-08-13 20:09:41 +0000[diff] [blame]30 <link rel="shortcut icon" href="../images/wand.ico" type="images/x-icon"/>
cristy29c5c992011-06-25 13:58:49 +0000[diff] [blame]31 <link rel="canonical" href="http://www.imagemagick.org" />
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cristyeed6cb62012-01-28 19:38:34 +0000[diff] [blame]33 <!-- Add jQuery library -->
34 <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.7/jquery.min.js"></script>
35
36 <!-- Optionaly include easing and/or mousewheel plugins -->
37 <script type="text/javascript" src="http://www.imagemagick.org/fancybox/jquery.easing-1.3.pack.js"></script>
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39
40 <!-- Add fancyBox -->
cristy751980d2012-06-03 23:18:35 +0000[diff] [blame]41 <link rel="stylesheet" href="http://www.imagemagick.org/fancybox/jquery.fancybox.css?v=2.0.4" type="text/css" media="screen" />
42 <script type="text/javascript" src="http://www.imagemagick.org/fancybox/jquery.fancybox.pack.js?v=2.0.4"></script>
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44 <!-- Optionaly include button and/or thumbnail helpers -->
cristy751980d2012-06-03 23:18:35 +0000[diff] [blame]45 <link rel="stylesheet" href="http://www.imagemagick.org/fancybox/helpers/jquery.fancybox-buttons.css?v=2.0.4" type="text/css" media="screen" />
46 <script type="text/javascript" src="http://www.imagemagick.org/fancybox/helpers/jquery.fancybox-buttons.js?v=2.0.4"></script>
cristyeed6cb62012-01-28 19:38:34 +0000[diff] [blame]47
cristy751980d2012-06-03 23:18:35 +0000[diff] [blame]48 <link rel="stylesheet" href="http://www.imagemagick.org/fancybox/helpers/jquery.fancybox-thumbs.css?v=2.0.4" type="text/css" media="screen" />
49 <script type="text/javascript" src="http://www.imagemagick.org/fancybox/helpers/jquery.fancybox-thumbs.js?v=2.0.4"></script>
cristyeed6cb62012-01-28 19:38:34 +0000[diff] [blame]50 <script type="text/javascript">
51 $(document).ready(function() {
52 $(".fancybox").fancybox();
53 });
54 </script>
55 <!-- ImageMagick style -->
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cristy3c98a4f2010-08-13 20:09:41 +0000[diff] [blame]57 <style type="text/css" media="all">
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59 </style>
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85</div>
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238<div class="main">
239
cristydcca3fa2010-12-29 21:50:07 +0000[diff] [blame]240<h1>ImageMagick Stream Command-line Tool</h1>
cristy751980d2012-06-03 23:18:35 +0000[diff] [blame]241<p class="navigation-index">[<a href="stream.html#usage">Example Usage</a> &bull; <a href="stream.html#options">Option Summary</a>]</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]242
243<div class="doc-section">
244<p><kbd>Stream</kbd> is a lightweight tool to stream one or more pixel components of the image or portion of the image to your choice of storage formats. It writes the pixel components as they are read from the input image a row at a time making <kbd>stream</kbd> desirable when working with large images or when you require raw pixel components.</p>
245</div>
246
cristydcca3fa2010-12-29 21:50:07 +0000[diff] [blame]247<h2><a id="usage"></a>Example Usage</h2>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]248<div class="doc-section">
249
250<p>We list a few examples of the <kbd>stream</kbd> command here to illustrate its usefulness and ease of use. To get started, lets stream the red, green, blue components of a 640x480 JPEG image to disk as unsigned characters:</p>
251
cristyeed6cb62012-01-28 19:38:34 +0000[diff] [blame]252<p class='crt'><span class="crtprompt"> $ </span><span class='crtin'>stream -map rgb -storage-type char image.jpg pixels.dat</span><span class='crtout'></span><span class="crtprompt"> $ </span><span class='crtin'>display -depth 8 -size 640x480 rgb:pixels.dat</span></p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]253<p>Here we extract a 100x100 region from a TIFF image in the grayscale format as doubles:</p>
254
cristyeed6cb62012-01-28 19:38:34 +0000[diff] [blame]255<p class='crt'><span class="crtprompt"> $ </span><span class='crtin'>stream -map i -storage-type double -extract 100x100+30+40 image.tif gray.raw</span></p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]256<p>You can also associate the region to extract with the image filename:</p>
257
cristyeed6cb62012-01-28 19:38:34 +0000[diff] [blame]258<p class='crt'><span class="crtprompt"> $ </span><span class='crtin'>stream -map i -storage-type double 'image.tif[100x100+30+40]' gray.raw</span></p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]259</div>
260
cristydcca3fa2010-12-29 21:50:07 +0000[diff] [blame]261<h2><a id="options"></a>Option Summary</h2>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]262<div class="doc-section">
263
264<p>The <kbd>stream</kbd> command recognizes these options. Click on an option to get more details about how that option works.</p>
265
266<table class="doc">
267 <tbody>
268 <tr>
269 <th align="left">Option</th>
270 <th align="left">Description</th>
271 </tr>
272
273 <tr>
cristy751980d2012-06-03 23:18:35 +0000[diff] [blame]274 <td valign="top"><a href="command-line-options.html#authenticate">-authenticate <em class="option">value</em></a></td>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]275 <td valign="top">decrypt image with this password</td>
276 </tr>
277
278 <tr>
cristy751980d2012-06-03 23:18:35 +0000[diff] [blame]279 <td valign="top"><a href="command-line-options.html#channel">-channel <em class="option">type</em></a></td>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]280 <td valign="top">apply option to select image channels</td>
281 </tr>
282
283 <tr>
cristy751980d2012-06-03 23:18:35 +0000[diff] [blame]284 <td valign="top"><a href="command-line-options.html#colorspace">-colorspace <em class="option">type</em></a></td>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]285 <td valign="top">set image colorspace</td>
286 </tr>
287
288 <tr>
cristy751980d2012-06-03 23:18:35 +0000[diff] [blame]289 <td valign="top"><a href="command-line-options.html#debug">-debug <em class="option">events</em></a></td>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]290 <td valign="top">display copious debugging information</td>
291 </tr>
292
293 <tr>
cristy751980d2012-06-03 23:18:35 +0000[diff] [blame]294 <td valign="top"><a href="command-line-options.html#define">-define <em class="option">format:option</em></a></td>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]295 <td valign="top">define one or more image format options</td>
296 </tr>
297
298 <tr>
cristy751980d2012-06-03 23:18:35 +0000[diff] [blame]299 <td valign="top"><a href="command-line-options.html#density">-density <em class="option">geometry</em></a></td>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]300 <td valign="top">horizontal and vertical density of the image</td>
301 </tr>
302
303 <tr>
cristy751980d2012-06-03 23:18:35 +0000[diff] [blame]304 <td valign="top"><a href="command-line-options.html#depth">-depth <em class="option">value</em></a></td>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]305 <td valign="top">image depth</td>
306 </tr>
307
308 <tr>
cristy751980d2012-06-03 23:18:35 +0000[diff] [blame]309 <td valign="top"><a href="command-line-options.html#extract">-extract <em class="option">geometry</em></a></td>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]310 <td valign="top">extract area from image</td>
311 </tr>
312
313 <tr>
cristy751980d2012-06-03 23:18:35 +0000[diff] [blame]314 <td valign="top"><a href="command-line-options.html#help">-help</a></td>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]315 <td valign="top">print program options</td>
316 </tr>
317
318 <tr>
cristy751980d2012-06-03 23:18:35 +0000[diff] [blame]319 <td valign="top"><a href="command-line-options.html#interlace">-interlace <em class="option">type</em></a></td>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]320 <td valign="top">type of image interlacing scheme</td>
321 </tr>
322
323 <tr>
cristy751980d2012-06-03 23:18:35 +0000[diff] [blame]324 <td valign="top"><a href="command-line-options.html#interpolate">-interpolate <em class="option">method</em></a></td>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]325 <td valign="top">pixel color interpolation method</td>
326 </tr>
327
328 <tr>
cristy751980d2012-06-03 23:18:35 +0000[diff] [blame]329 <td valign="top"><a href="command-line-options.html#limit">-limit <em class="option">type value</em></a></td>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]330 <td valign="top">pixel cache resource limit</td>
331 </tr>
332
333 <tr>
cristy751980d2012-06-03 23:18:35 +0000[diff] [blame]334 <td valign="top"><a href="command-line-options.html#list">-list <em class="option">type</em></a></td>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]335 <td valign="top">Color, Configure, Delegate, Format, Magic, Module, Resource, or Type</td>
336 </tr>
337
338 <tr>
cristy751980d2012-06-03 23:18:35 +0000[diff] [blame]339 <td valign="top"><a href="command-line-options.html#log">-log <em class="option">format</em></a></td>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]340 <td valign="top">format of debugging information</td>
341 </tr>
342
343 <tr>
cristy751980d2012-06-03 23:18:35 +0000[diff] [blame]344 <td valign="top"><a href="command-line-options.html#stream-map">-map <em class="option">components</em></a></td>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]345 <td valign="top">store pixels in this format.</td>
346 </tr>
347
348 <tr>
cristy751980d2012-06-03 23:18:35 +0000[diff] [blame]349 <td valign="top"><a href="command-line-options.html#monitor">-monitor</a></td>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]350 <td valign="top">monitor progress</td>
351 </tr>
352
353 <tr>
cristy751980d2012-06-03 23:18:35 +0000[diff] [blame]354 <td valign="top"><a href="command-line-options.html#quantize">-quantize <em class="option">colorspace</em></a></td>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]355 <td valign="top">reduce image colors in this colorspace</td>
356 </tr>
357
358 <tr>
cristy751980d2012-06-03 23:18:35 +0000[diff] [blame]359 <td valign="top"><a href="command-line-options.html#quiet">-quiet</a></td>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]360 <td valign="top">suppress all warning messages</td>
361 </tr>
362
363 <tr>
cristy751980d2012-06-03 23:18:35 +0000[diff] [blame]364 <td valign="top"><a href="command-line-options.html#regard-warnings">-regard-warnings</a></td>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]365 <td valign="top">pay attention to warning messages.</td>
366 </tr>
367
368 <tr>
cristy751980d2012-06-03 23:18:35 +0000[diff] [blame]369 <td valign="top"><a href="command-line-options.html#respect-parentheses">-respect-parentheses</a></td>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]370 <td valign="top">settings remain in effect until parenthesis boundary.</td>
371 </tr>
372
373 <tr>
cristy751980d2012-06-03 23:18:35 +0000[diff] [blame]374 <td valign="top"><a href="command-line-options.html#sampling-factor">-sampling-factor <em class="option">geometry</em></a></td>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]375 <td valign="top">horizontal and vertical sampling factor</td>
376 </tr>
377
378 <tr>
cristy751980d2012-06-03 23:18:35 +0000[diff] [blame]379 <td valign="top"><a href="command-line-options.html#seed">-seed <em class="option">value</em></a></td>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]380 <td valign="top">seed a new sequence of pseudo-random numbers</td>
381 </tr>
382
383 <tr>
cristy751980d2012-06-03 23:18:35 +0000[diff] [blame]384 <td valign="top"><a href="command-line-options.html#set">-set <em class="option">attribute value</em></a></td>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]385 <td valign="top">set an image attribute</td>
386 </tr>
387
388 <tr>
cristy751980d2012-06-03 23:18:35 +0000[diff] [blame]389 <td valign="top"><a href="command-line-options.html#size">-size <em class="option">geometry</em></a></td>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]390 <td valign="top">width and height of image</td>
391 </tr>
392
393 <tr>
cristy751980d2012-06-03 23:18:35 +0000[diff] [blame]394 <td valign="top"><a href="command-line-options.html#storage-type">-storage-type <em class="option">type</em></a></td>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]395 <td valign="top">store pixels with this storage type.</td>
396 </tr>
397
398 <tr>
cristy751980d2012-06-03 23:18:35 +0000[diff] [blame]399 <td valign="top"><a href="command-line-options.html#synchronize">-synchronize</a></td>
cristy5063d812010-10-19 16:28:10 +0000[diff] [blame]400 <td valign="top">synchronize image to storage device</td>
401 </tr>
402
403 <tr>
cristy751980d2012-06-03 23:18:35 +0000[diff] [blame]404 <td valign="top"><a href="command-line-options.html#taint">-taint</a></td>
cristy5063d812010-10-19 16:28:10 +0000[diff] [blame]405 <td valign="top">mark the image as modified</td>
406 </tr>
407
408 <tr>
cristy751980d2012-06-03 23:18:35 +0000[diff] [blame]409 <td valign="top"><a href="command-line-options.html#transparent-color">-transparent-color <em class="option">color</em></a></td>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]410 <td valign="top">transparent color</td>
411 </tr>
412
413 <tr>
cristy751980d2012-06-03 23:18:35 +0000[diff] [blame]414 <td valign="top"><a href="command-line-options.html#verbose">-verbose</a></td>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]415 <td valign="top">print detailed information about the image</td>
416 </tr>
417
418 <tr>
cristy751980d2012-06-03 23:18:35 +0000[diff] [blame]419 <td valign="top"><a href="command-line-options.html#version">-version</a></td>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]420 <td valign="top">print version information</td>
421 </tr>
422
423 <tr>
cristy751980d2012-06-03 23:18:35 +0000[diff] [blame]424 <td valign="top"><a href="command-line-options.html#virtual-pixel">-virtual-pixel <em class="option">method</em></a></td>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]425 <td valign="top">access method for pixels outside the boundaries of the image</td>
426 </tr>
427
428 </tbody>
429</table>
430
431</div>
cristy3eaa0ef2010-03-06 20:35:26 +0000[diff] [blame]432
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434
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