1 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
\r
2 "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
\r
3 <html version="-//W3C//DTD XHTML 1.1//EN"
\r
4 xmlns="http://www.w3.org/1999/xhtml" xml:lang="en"
\r
5 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
\r
6 xsi:schemaLocation="http://www.w3.org/1999/xhtml
\r
7 http://www.w3.org/MarkUp/SCHEMA/xhtml11.xsd">
\r
9 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
\r
10 <meta name="verify-v1" content="g222frIIxcQTrvDR3NBRUSKP3AnMNoqxOkIniCEkV7U="/>
\r
11 <title>ImageMagick: MagickCore, C API for ImageMagick: Resize an Image</title>
12 <meta http-equiv="Content-Language" content="en-US"/>
13 <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
14 <meta http-equiv="Reply-to" content="magick-users@imagemagick.org"/>
15 <meta name="Application-name" content="ImageMagick"/>
16 <meta name="Description" content="Use ImageMagick to convert, edit, or compose bitmap images in a variety of formats. In addition resize, rotate, shear, distort and transform images."/>
17 <meta name="Application-url" content="http://www.imagemagick.org"/>
18 <meta name="Generator" content="PHP"/>
19 <meta name="Keywords" content="magickcore, c, api, for, imagemagick:, resize, an, image, ImageMagick, ImageMagic, MagickCore, MagickWand, PerlMagick, Magick++, RMagick, PythonMagick, JMagick, TclMagick, Image, Magick, Magic, Wand, ImageMagickObject, Swiss, Army, Knife, Image, Processing"/>
20 <meta name="Rating" content="GENERAL"/>
21 <meta name="Robots" content="INDEX, FOLLOW"/>
22 <meta name="Generator" content="ImageMagick Studio LLC"/>
23 <meta name="Author" content="ImageMagick Studio LLC"/>
24 <meta name="Revisit-after" content="2 DAYS"/>
25 <meta name="Resource-type" content="document"/>
26 <meta name="Copyright" content="Copyright (c) 1999-2011 ImageMagick Studio LLC"/>
27 <meta name="Distribution" content="Global"/>
28 <link rel="icon" href="../../images/wand.png"/>
29 <link rel="shortcut icon" href="../../images/wand.ico" type="images/x-icon"/>
30 <link rel="meta" type="application/rdf+xml" title="ICI" href="http://imagemagick.org/ici.rdf"/>
\r
31 <link rel="stylesheet" href="http://www.google.com/cse/style/look/default.css" type="text/css" />
\r
32 <style type="text/css" media="all">
\r
33 @import url("../../www/magick.css");
\r
35 <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4/jquery.min.js"></script>
\r
36 <script type="text/javascript" src="../fancybox/jquery.fancybox-1.3.4.pack.js"></script>
\r
37 <link rel="stylesheet" type="text/css" href="../fancybox/jquery.fancybox-1.3.4.css" media="screen" />
\r
38 <script type="text/javascript">
\r
39 $(document).ready(function() {
\r
40 $("a[href$=.jpg],a[href$=.png],a[href$=.gif]").fancybox({
\r
41 'transitionIn' : 'elastic',
\r
42 'transitionOut' : 'elastic',
\r
43 'overlayShow' : false,
\r
50 <body id="www-imagemagick-org">
\r
51 <div class="titlebar">
\r
52 <div style="margin: 17px auto; float: left;">
\r
53 <script type="text/javascript">
\r
55 google_ad_client = "pub-3129977114552745";
\r
56 google_ad_slot = "5439289906";
\r
57 google_ad_width = 728;
\r
58 google_ad_height = 90;
\r
61 <script type="text/javascript"
\r
62 src="http://pagead2.googlesyndication.com/pagead/show_ads.js">
\r
65 <a href="http://www.imagemagick.org/discourse-server/">
\r
66 <img src="../../images/logo.jpg"
\r
67 alt="ImageMagick Logo"
\r
68 style="width: 123px; height: 118px; border: 0px; float: right;" /></a>
\r
69 <a href="../../index.html">
\r
70 <img src="../../images/sprite.jpg"
\r
71 alt="ImageMagick Sprite"
\r
72 style="width: 114px; height: 118px; border: 0px; float: right;" /></a>
\r
75 <div class="westbar">
\r
78 <a title="About ImageMagick" href="../../index.html">About ImageMagick</a>
80 <div class="sep"></div>
\r
82 <a title="Binary Releases" href="../../www/binary-releases.html">Binary Releases</a>
85 <a title="Binary Release: Unix" href="../../www/binary-releases.html#unix">Unix</a>
88 <a title="Binary Release: MacOS X" href="../../www/binary-releases.html#macosx">Mac OS X</a>
91 <a title="Binary Release: iPhone" href="../../www/binary-releases.html#iPhone">iPhone</a>
94 <a title="Binary Release: Windows" href="../../www/binary-releases.html#windows">Windows</a>
96 <div class="sep"></div>
\r
98 <a title="Command-line Tools" href="../../www/command-line-tools.html">Command-line Tools</a>
101 <a title="Command-line Tools: Processing" href="../../www/command-line-processing.html">Processing</a>
104 <a title="Command-line Tools: Options" href="../../www/command-line-options.html">Options</a>
107 <a title="Command-line Tools: Usage" href="http://www.imagemagick.org/Usage/">Usage</a>
110 <a title="Program Interfaces" href="../../www/api.html">Program Interfaces</a>
113 <a title="Program Interface: MagickWand" href="../../www/magick-wand.html">MagickWand</a>
116 <a title="Program Interface: MagickCore" href="../../www/magick-core.html">MagickCore</a>
119 <a title="Program Interface: PerlMagick" href="../../www/perl-magick.html">PerlMagick</a>
122 <a title="Program Interface: Magick++" href="../../www/magick++.html">Magick++</a>
124 <div class="sep"></div>
\r
126 <a title="Install from Source" href="../../www/install-source.html">Install from Source</a>
129 <a title="Install from Source: Unix" href="../../www/install-source.html#unix">Unix</a>
132 <a title="Install from Source: Windows" href="../../www/install-source.html#windows">Windows</a>
135 <a title="Resources" href="../../www/resources.html">Resources</a>
138 <a title="Architecture" href="../../www/architecture.html">Architecture</a>
141 <a title="Download" href="../../www/download.html">Download</a>
143 <div class="sep"></div>
\r
145 <a title="Search" href="../../www/search.html">Search</a>
147 <div class="sep"></div>
\r
149 <a title="Site Map" href="../../www/sitemap.html">Site Map</a>
152 <a title="Site Map: Links" href="../../www/links.html">Links</a>
154 <div class="sep"></div>
\r
156 <a title="Sponsors" href="../../www/sponsors.html">Sponsors:</a>
158 <a href="http://www.networkredux.com">
159 <img src="../../images/networkredux.png" alt="[sponsor]"
160 style="margin-top: 4px; margin-left: 4px; border: 0px; float: left;" /></a>
161 <div class="sponsbox">
162 <div class="sponsor">
163 <a title="Sponsor: Website Hosting" href="http://www.hostreviewgeeks.com">Website Hosting</a><!-- 201109010090 alexanian media -->
165 <div class="sponsor">
166 <a title="Sponsor: Druckerei" href="http://www.allesdruck.de">Druckerei</a><!-- 201303011500 r.leo -->
168 <div class="sponsor">
169 <a title="Sponsor: Hotel München" href="http://www.messehotel-erb-muenchen.de">Hotel München</a><!-- 201111010450 cerb -->
171 <div class="sponsor">
172 <a title="Sponsor: Best Web Hosting" href="http://webhostinggeeks.com">Best Web Hosting</a><!-- 201110010720 -->
174 <div class="sponsor">
175 <a title="Sponsor: Flyer drucken" href="http://www.online-druck.biz">Flyer drucken</a><!-- 201109010900 Floeter-->
177 <div class="sponsor">
178 <a title="Sponsor: Web Hosting Reviews" href="http://www.webhostingmasters.com">Web Hosting Reviews</a><!-- 201107011500 affliatelabel -->
180 <div class="sponsor">
181 <a title="Sponsor: Druckerei" href="http://print24.com/de/">Druckerei</a><!-- 201110010720 -->
183 <div class="sponsor">
184 <a title="Sponsor: Web Hosting Ratings" href="http://webhostingrating.com">Web Hosting Ratings</a><!-- 201110010720 -->
186 <div class="sponsor">
187 <a title="Sponsor: Notebook Reparatur Berlin" href="http://www.notebook-reparaturen-berlin.de">Notebook Reparatur Berlin</a><!-- 2011060100025 gabi.schulze-->
193 <div class="eastbar">
\r
199 <h1>Module resize Methods</h1>
200 <p class="navigation-index">[<a href="#AdaptiveResizeImage">AdaptiveResizeImage</a> • <a href="#MagnifyImage">MagnifyImage</a> • <a href="#MinifyImage">MinifyImage</a> • <a href="#ResampleImage">ResampleImage</a> • <a href="#LiquidRescaleImage">LiquidRescaleImage</a> • <a href="#ResizeImage">ResizeImage</a> • <a href="#SampleImage">SampleImage</a> • <a href="#ScaleImage">ScaleImage</a> • <a href="#ThumbnailImage">ThumbnailImage</a>]</p>
202 <h2><a href="http://www.imagemagick.org/api/MagickCore/resize_8c.html" id="AdaptiveResizeImage">AdaptiveResizeImage</a></h2>
203 <div class="doc-section">
205 <p>AdaptiveResizeImage() adaptively resize image with pixel resampling.</p>
207 <p>The format of the AdaptiveResizeImage method is:</p>
210 Image *AdaptiveResizeImage(const Image *image,const size_t columns,
211 const size_t rows,ExceptionInfo *exception)
214 <p>A description of each parameter follows:</p>
220 <p>the number of columns in the resized image.</p>
223 <p>the number of rows in the resized image.</p>
226 <p>return any errors or warnings in this structure.</p>
229 <h2><a href="http://www.imagemagick.org/api/MagickCore/resize_8c.html" id="MagnifyImage">MagnifyImage</a></h2>
230 <div class="doc-section">
232 <p>MagnifyImage() is a convenience method that scales an image proportionally to twice its size.</p>
234 <p>The format of the MagnifyImage method is:</p>
237 Image *MagnifyImage(const Image *image,ExceptionInfo *exception)
240 <p>A description of each parameter follows:</p>
246 <p>return any errors or warnings in this structure.</p>
249 <h2><a href="http://www.imagemagick.org/api/MagickCore/resize_8c.html" id="MinifyImage">MinifyImage</a></h2>
250 <div class="doc-section">
252 <p>MinifyImage() is a convenience method that scales an image proportionally to half its size.</p>
254 <p>The format of the MinifyImage method is:</p>
257 Image *MinifyImage(const Image *image,ExceptionInfo *exception)
260 <p>A description of each parameter follows:</p>
266 <p>return any errors or warnings in this structure.</p>
269 <h2><a href="http://www.imagemagick.org/api/MagickCore/resize_8c.html" id="ResampleImage">ResampleImage</a></h2>
270 <div class="doc-section">
272 <p>ResampleImage() resize image in terms of its pixel size, so that when displayed at the given resolution it will be the same size in terms of real world units as the original image at the original resolution.</p>
274 <p>The format of the ResampleImage method is:</p>
277 Image *ResampleImage(Image *image,const double x_resolution,
278 const double y_resolution,const FilterTypes filter,const double blur,
279 ExceptionInfo *exception)
282 <p>A description of each parameter follows:</p>
285 <p>the image to be resized to fit the given resolution.</p>
287 <h5>x_resolution</h5>
288 <p>the new image x resolution.</p>
290 <h5>y_resolution</h5>
291 <p>the new image y resolution.</p>
294 <p>Image filter to use.</p>
297 <p>the blur factor where > 1 is blurry, < 1 is sharp.</p>
300 <h2><a href="http://www.imagemagick.org/api/MagickCore/resize_8c.html" id="LiquidRescaleImage">LiquidRescaleImage</a></h2>
301 <div class="doc-section">
303 <p>LiquidRescaleImage() rescales image with seam carving.</p>
305 <p>The format of the LiquidRescaleImage method is:</p>
308 Image *LiquidRescaleImage(const Image *image,
309 const size_t columns,const size_t rows,
310 const double delta_x,const double rigidity,ExceptionInfo *exception)
313 <p>A description of each parameter follows:</p>
319 <p>the number of columns in the rescaled image.</p>
322 <p>the number of rows in the rescaled image.</p>
325 <p>maximum seam transversal step (0 means straight seams).</p>
328 <p>introduce a bias for non-straight seams (typically 0).</p>
331 <p>return any errors or warnings in this structure.</p>
334 <h2><a href="http://www.imagemagick.org/api/MagickCore/resize_8c.html" id="ResizeImage">ResizeImage</a></h2>
335 <div class="doc-section">
337 <p>ResizeImage() scales an image to the desired dimensions, using the given filter (see AcquireFilterInfo()).</p>
339 <p>If an undefined filter is given the filter defaults to Mitchell for a colormapped image, a image with a matte channel, or if the image is enlarged. Otherwise the filter defaults to a Lanczos.</p>
341 <p>ResizeImage() was inspired by Paul Heckbert's "zoom" program.</p>
343 <p>The format of the ResizeImage method is:</p>
346 Image *ResizeImage(Image *image,const size_t columns,
347 const size_t rows,const FilterTypes filter,const double blur,
348 ExceptionInfo *exception)
351 <p>A description of each parameter follows:</p>
357 <p>the number of columns in the scaled image.</p>
360 <p>the number of rows in the scaled image.</p>
363 <p>Image filter to use.</p>
366 <p>the blur factor where > 1 is blurry, < 1 is sharp. Typically set this to 1.0.</p>
369 <p>return any errors or warnings in this structure.</p>
372 <h2><a href="http://www.imagemagick.org/api/MagickCore/resize_8c.html" id="SampleImage">SampleImage</a></h2>
373 <div class="doc-section">
375 <p>SampleImage() scales an image to the desired dimensions with pixel sampling. Unlike other scaling methods, this method does not introduce any additional color into the scaled image.</p>
377 <p>The format of the SampleImage method is:</p>
380 Image *SampleImage(const Image *image,const size_t columns,
381 const size_t rows,ExceptionInfo *exception)
384 <p>A description of each parameter follows:</p>
390 <p>the number of columns in the sampled image.</p>
393 <p>the number of rows in the sampled image.</p>
396 <p>return any errors or warnings in this structure.</p>
399 <h2><a href="http://www.imagemagick.org/api/MagickCore/resize_8c.html" id="ScaleImage">ScaleImage</a></h2>
400 <div class="doc-section">
402 <p>ScaleImage() changes the size of an image to the given dimensions.</p>
404 <p>The format of the ScaleImage method is:</p>
407 Image *ScaleImage(const Image *image,const size_t columns,
408 const size_t rows,ExceptionInfo *exception)
411 <p>A description of each parameter follows:</p>
417 <p>the number of columns in the scaled image.</p>
420 <p>the number of rows in the scaled image.</p>
423 <p>return any errors or warnings in this structure.</p>
426 <h2><a href="http://www.imagemagick.org/api/MagickCore/resize_8c.html" id="ThumbnailImage">ThumbnailImage</a></h2>
427 <div class="doc-section">
429 <p>ThumbnailImage() changes the size of an image to the given dimensions and removes any associated profiles. The goal is to produce small low cost thumbnail images suited for display on the Web.</p>
431 <p>The format of the ThumbnailImage method is:</p>
434 Image *ThumbnailImage(const Image *image,const size_t columns,
435 const size_t rows,ExceptionInfo *exception)
438 <p>A description of each parameter follows:</p>
444 <p>the number of columns in the scaled image.</p>
447 <p>the number of rows in the scaled image.</p>
450 <p>return any errors or warnings in this structure.</p>
457 <span id="linkbar-west"> </span>
\r
458 <span id="linkbar-center">
\r
459 <a href="http://www.imagemagick.org/discourse-server/">Discourse Server</a> •
\r
460 <a href="http://www.imagemagick.org/MagickStudio/scripts/MagickStudio.cgi">Studio</a>
\r
462 <span id="linkbar-east"> </span>
\r
464 <div class="footer">
\r
465 <span id="footer-west">© 1999-2011 ImageMagick Studio LLC</span>
\r
466 <span id="footer-east"> <a href="../http://www.imagemagick.org/script/contact.php">Contact the Wizards</a></span>
\r
468 <div style="clear: both; margin: 0; width: 100%; "></div>
\r
469 <script type="text/javascript">
\r
470 var _gaq = _gaq || [];
\r
471 _gaq.push(['_setAccount', 'UA-17690367-1']);
\r
472 _gaq.push(['_trackPageview']);
\r
475 var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
\r
476 ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
\r
477 var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
\r