github.com/kaydxh/golang@v0.0.131/pkg/gocv/cgo/third_path/graphics-magick/share/doc/GraphicsMagick/www/index.html (about)

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     7  <title>GraphicsMagick Image Processing System</title>
     8  <meta content="GraphicsMagick is a robust collection of tools and libraries to read, write, and manipulate an image in any of the more popular image formats including GIF, JPEG, PNG, PDF, and WebP. With GraphicsMagick you can create GIFs dynamically making it suitable for Web applications. You can also resize, rotate, sharpen, color reduce, or add special effects to an image and save your completed work in the same or differing image format. " name="description" />
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    16  <span class="title">GraphicsMagick</span>
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    37  <div class="document" id="graphicsmagick-image-processing-system">
    38  <h1 class="title">GraphicsMagick Image Processing System</h1>
    39  
    40  <!-- -*- mode: rst -*- -->
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    43  <table border="1" class="docutils">
    44  <colgroup>
    45  <col width="33%" />
    46  <col width="67%" />
    47  </colgroup>
    48  <tbody valign="top">
    49  <tr><td>Current Release</td>
    50  <td>1.3.35 (Released February 23, 2020) <a class="reference external" href="http://sourceforge.net/projects/graphicsmagick/files/">download release</a></td>
    51  </tr>
    52  <tr><td>Development Snapshots</td>
    53  <td>(Updated frequently) <a class="reference external" href="ftp://ftp.graphicsmagick.org/pub/GraphicsMagick/snapshots/">download development snapshots</a></td>
    54  </tr>
    55  <tr><td>Mercurial Repository</td>
    56  <td>(Updated frequently) <a class="reference external" href="http://sourceforge.net/p/graphicsmagick/code/">visit Mercurial repository</a></td>
    57  </tr>
    58  </tbody>
    59  </table>
    60  <p>Check <a class="reference external" href="http://www.GraphicsMagick.org/">http://www.GraphicsMagick.org/</a> for the latest version of this page.</p>
    61  <p>GraphicsMagick is the swiss army knife of image processing. Comprised
    62  of 267K physical lines (according to David A. Wheeler's <a class="reference external" href="http://www.dwheeler.com/sloccount/">SLOCCount</a>)
    63  of source code in the base package (or 1,225K including 3rd party
    64  libraries) it provides a robust and efficient collection of tools and
    65  libraries which support reading, writing, and manipulating an image in
    66  over 89 major formats including important formats like DPX, GIF, JPEG,
    67  JPEG-2000, PNG, PDF, PNM, TIFF, and WebP.</p>
    68  <p>Image processing is multi-threaded using <a class="reference external" href="http://www.openmp.org/">OpenMP</a> (<a class="reference external" href="OpenMP.html">read about OpenMP
    69  in GraphicsMagick</a>) so that CPU-bound tasks scale linearly as
    70  processor cores are added. <a class="reference external" href="http://www.openmp.org/">OpenMP</a> support requires compilation with
    71  GCC 4.2 (or later), or use of any C compiler supporting at least the
    72  <a class="reference external" href="http://www.openmp.org/">OpenMP</a> 2.0 specification.</p>
    73  <p>GraphicsMagick is quite portable, and compiles under almost every general
    74  purpose operating system that runs on 32-bit or 64-bit CPUs.
    75  GraphicsMagick is available for virtually any Unix or Unix-like system,
    76  including Linux. It also runs under <a class="reference external" href="INSTALL-windows.html">Windows</a>
    77  2000 and later (Windows 2000, XP, Vista, 7, 8.X, 10), and MacOS-X.</p>
    78  <p>GraphicsMagick supports huge images and has been tested with
    79  gigapixel-size images. GraphicsMagick can create new images on the
    80  fly, making it suitable for building dynamic Web
    81  applications. GraphicsMagick may be used to resize, rotate, sharpen,
    82  color reduce, or add special effects to an image and save the result
    83  in the same or different image format. Image processing operations are
    84  available from the command line, as well as through C, C++, Lua, Perl,
    85  PHP, Python, Tcl, Ruby, Windows .NET, or Windows COM programming
    86  interfaces. With some modification, language extensions for
    87  ImageMagick may be used.</p>
    88  <p>GraphicsMagick is originally derived from <a class="reference external" href="http://www.imagemagick.org/">ImageMagick</a> 5.5.2 as of
    89  November 2002 but has been completely independent of the ImageMagick
    90  project since then. Since the fork from ImageMagick many improvements
    91  have been made (see <a class="reference external" href="NEWS.html">NEWS</a>) by many <a class="reference external" href="authors.html">authors</a> using an open
    92  development model but without breaking the API or utilities operation.</p>
    93  <p>Here are some reasons to prefer GraphicsMagick over ImageMagick or
    94  other popular software:</p>
    95  <blockquote>
    96  <ul class="simple">
    97  <li>GM is more efficient than ImageMagick so it gets the job done
    98  faster using fewer resources.</li>
    99  <li>GM is much smaller and lighter than ImageMagick (3-5X smaller
   100  installation footprint).</li>
   101  <li>GM is used to process billions of files at the world's largest photo
   102  sites (e.g. <a class="reference external" href="http://www.kitchensoap.com/2009/04/03/slides-from-web20-expo-2009-and-somethin-else-interestin/">Flickr</a> and <a class="reference external" href="http://codeascraft.etsy.com/2010/07/09/batch-processing-millions-of-images/">Etsy</a>).</li>
   103  <li>GM does not conflict with other installed software.</li>
   104  <li>GM suffers from fewer security issues and exploits than ImageMagick.</li>
   105  <li>GM participates in Google's <a class="reference external" href="https://github.com/google/oss-fuzz">oss-fuzz</a> project (since February, 2018).</li>
   106  <li>GM <a class="reference external" href="http://www.valgrind.org/">valgrind</a>'s 100% clean (memcheck and helgrind).</li>
   107  <li>GM passes rigorous memory error testing using <a class="reference external" href="https://github.com/google/sanitizers/wiki/AddressSanitizer">ASan</a>.</li>
   108  <li>GM passes undefined behavior testing using <a class="reference external" href="https://clang.llvm.org/docs/UndefinedBehaviorSanitizer.html">UBSan</a>.</li>
   109  <li>GM comes with a comprehensive <a class="reference external" href="GraphicsMagick.html">manual page</a>.</li>
   110  <li>GM provides API and ABI stability and managed releases that you can
   111  count on (ImageMagick does not).</li>
   112  <li>GM provides detailed yet comprehensible <a class="reference external" href="Changelog.html">ChangeLog</a> and <a class="reference external" href="NEWS.html">NEWS</a>
   113  files (ImageMagick does not).</li>
   114  <li>GM is available for free, and may be used to support both open and
   115  proprietary applications.</li>
   116  <li>GM is distributed under an X11-style license (<a class="reference external" href="http://opensource.org/licenses/MIT">MIT License</a>),
   117  approved by the <a class="reference external" href="http://www.opensource.org/">Open Source Initiative</a>, recommended for use by
   118  the <a class="reference external" href="http://www.osscc.net/en/index.html">OSSCC</a>, and compatible with the <a class="reference external" href="http://www.fsf.org/licenses/licenses.html">GNU GPL</a>.</li>
   119  <li>GM source code is managed in <a class="reference external" href="https://www.mercurial-scm.org/">Mercurial</a>, a distributed source
   120  control management tool which supports management of local
   121  changes.  The repository history goes back to 1998.</li>
   122  <li>GM has 0.00 (zero) defects per 1000 lines of code (293,341 total
   123  lines included) according to Coverity analysis on May 25, 2015.</li>
   124  <li>GM developers contribute to other free projects for the public good.</li>
   125  </ul>
   126  </blockquote>
   127  <p>GraphicsMagick is <a class="reference external" href="Copyright.html">copyrighted</a> by the GraphicsMagick
   128  Group as well as many others.</p>
   129  <p>Here are just a few examples of what GraphicsMagick can do:</p>
   130  <blockquote>
   131  <ul class="simple">
   132  <li>Convert an image from one format to another (e.g. TIFF to JPEG)</li>
   133  <li>Resize, rotate, sharpen, color reduce, or add special effects to an
   134  image</li>
   135  <li>Create a montage of image thumbnails</li>
   136  <li>Create a transparent image suitable for use on the Web</li>
   137  <li>Compare two images</li>
   138  <li>Turn a group of images into a GIF animation sequence</li>
   139  <li>Create a composite image by combining several separate images</li>
   140  <li>Draw shapes or text on an image</li>
   141  <li>Decorate an image with a border or frame</li>
   142  <li>Describe the format and characteristics of an image</li>
   143  </ul>
   144  </blockquote>
   145  <hr class="docutils" />
   146  <p>Copyright © GraphicsMagick Group 2002 - 2020</p>
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