libs/gil/doc/html/reference/group___image_processing.html

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  41 <div class="header">
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  43 <a href="#enum-members">Enumerations</a> &#124;
  44 <a href="#func-members">Functions</a>  </div>
  45   <div class="headertitle">
  46 <div class="title">Image Processing</div>  </div>
  47 </div><!--header-->
  48 <div class="contents">
  49
  50 <p>Image Processing algorithms.
  51 <a href="#details">More...</a></p>
  52 <table class="memberdecls">
  53 <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="enum-members"></a>
  54 Enumerations</h2></td></tr>
  55 <tr class="memitem:gae73d8b37c737a81ffa26b0c5c62d8f0e"><td class="memItemLeft" align="right" valign="top">enum &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group___image_processing.html#gae73d8b37c737a81ffa26b0c5c62d8f0e">threshold_direction</a> { <a class="el" href="group___image_processing.html#ggae73d8b37c737a81ffa26b0c5c62d8f0eaaf37d08ae228a87dc6b265fd1019c97d">regular</a>,
  56 <a class="el" href="group___image_processing.html#ggae73d8b37c737a81ffa26b0c5c62d8f0eaa91c78e040f7b9d158f381e197f8beb4">inverse</a>
  57  }</td></tr>
  58 <tr class="separator:gae73d8b37c737a81ffa26b0c5c62d8f0e"><td class="memSeparator" colspan="2">&#160;</td></tr>
  59 <tr class="memitem:ga62185ec305fdb480a227c159b9fa5e84"><td class="memItemLeft" align="right" valign="top">enum &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group___image_processing.html#ga62185ec305fdb480a227c159b9fa5e84">threshold_optimal_value</a> { <a class="el" href="group___image_processing.html#gga62185ec305fdb480a227c159b9fa5e84a3d734c6df06af2a3ac4e82483c51c455">otsu</a>
  60  }</td></tr>
  61 <tr class="memdesc:ga62185ec305fdb480a227c159b9fa5e84"><td class="mdescLeft">&#160;</td><td class="mdescRight">Method of optimal threshold value calculation.  <a href="group___image_processing.html#ga62185ec305fdb480a227c159b9fa5e84">More...</a><br /></td></tr>
  62 <tr class="separator:ga62185ec305fdb480a227c159b9fa5e84"><td class="memSeparator" colspan="2">&#160;</td></tr>
  63 <tr class="memitem:ga7b2c4d7867de63cfdc39c26d750efab0"><td class="memItemLeft" align="right" valign="top">enum &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group___image_processing.html#ga7b2c4d7867de63cfdc39c26d750efab0">threshold_truncate_mode</a> { <a class="el" href="group___image_processing.html#gga7b2c4d7867de63cfdc39c26d750efab0af0598264a691a8f62272aca0e79af374">threshold</a>,
  64 <a class="el" href="group___image_processing.html#gga7b2c4d7867de63cfdc39c26d750efab0ad02c4c4cde7ae76252540d116a40f23a">zero</a>
  65  }</td></tr>
  66 <tr class="memdesc:ga7b2c4d7867de63cfdc39c26d750efab0"><td class="mdescLeft">&#160;</td><td class="mdescRight">TODO.  <a href="group___image_processing.html#ga7b2c4d7867de63cfdc39c26d750efab0">More...</a><br /></td></tr>
  67 <tr class="separator:ga7b2c4d7867de63cfdc39c26d750efab0"><td class="memSeparator" colspan="2">&#160;</td></tr>
  68 <tr class="memitem:ga7dbbf38fa6a0f77880a286cd23be3203"><td class="memItemLeft" align="right" valign="top"><a id="ga7dbbf38fa6a0f77880a286cd23be3203"></a>enum &#160;</td><td class="memItemRight" valign="bottom"><b>threshold_adaptive_method</b> { <b>mean</b>,
  69 <b>gaussian</b>
  70  }</td></tr>
  71 <tr class="separator:ga7dbbf38fa6a0f77880a286cd23be3203"><td class="memSeparator" colspan="2">&#160;</td></tr>
  72 </table><table class="memberdecls">
  73 <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a>
  74 Functions</h2></td></tr>
  75 <tr class="memitem:ga2074015c3ced619e9075909377c10d5f"><td class="memTemplParams" colspan="2">template&lt;typename SrcView , typename DstView &gt; </td></tr>
  76 <tr class="memitem:ga2074015c3ced619e9075909377c10d5f"><td class="memTemplItemLeft" align="right" valign="top">void&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="group___image_processing.html#ga2074015c3ced619e9075909377c10d5f">threshold_binary</a> (SrcView const &amp;src_view, DstView const &amp;dst_view, typename <a class="el" href="structboost_1_1gil_1_1channel__type.html">channel_type</a>&lt; DstView &gt;::type threshold_value, typename <a class="el" href="structboost_1_1gil_1_1channel__type.html">channel_type</a>&lt; DstView &gt;::type max_value, <a class="el" href="group___image_processing.html#gae73d8b37c737a81ffa26b0c5c62d8f0e">threshold_direction</a> direction=<a class="el" href="group___image_processing.html#ggae73d8b37c737a81ffa26b0c5c62d8f0eaaf37d08ae228a87dc6b265fd1019c97d">threshold_direction::regular</a>)</td></tr>
  77 <tr class="memdesc:ga2074015c3ced619e9075909377c10d5f"><td class="mdescLeft">&#160;</td><td class="mdescRight">Applies fixed threshold to each pixel of image view. Performs image binarization by thresholding channel value of each pixel of given image view.  <a href="group___image_processing.html#ga2074015c3ced619e9075909377c10d5f">More...</a><br /></td></tr>
  78 <tr class="separator:ga2074015c3ced619e9075909377c10d5f"><td class="memSeparator" colspan="2">&#160;</td></tr>
  79 <tr class="memitem:gaeaf67a8717e170a8eacd7ca80273dd85"><td class="memTemplParams" colspan="2"><a id="gaeaf67a8717e170a8eacd7ca80273dd85"></a>
  80 template&lt;typename SrcView , typename DstView &gt; </td></tr>
  81 <tr class="memitem:gaeaf67a8717e170a8eacd7ca80273dd85"><td class="memTemplItemLeft" align="right" valign="top">void&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="group___image_processing.html#gaeaf67a8717e170a8eacd7ca80273dd85">threshold_binary</a> (SrcView const &amp;src_view, DstView const &amp;dst_view, typename <a class="el" href="structboost_1_1gil_1_1channel__type.html">channel_type</a>&lt; DstView &gt;::type threshold_value, <a class="el" href="group___image_processing.html#gae73d8b37c737a81ffa26b0c5c62d8f0e">threshold_direction</a> direction=<a class="el" href="group___image_processing.html#ggae73d8b37c737a81ffa26b0c5c62d8f0eaaf37d08ae228a87dc6b265fd1019c97d">threshold_direction::regular</a>)</td></tr>
  82 <tr class="memdesc:gaeaf67a8717e170a8eacd7ca80273dd85"><td class="mdescLeft">&#160;</td><td class="mdescRight">Applies fixed threshold to each pixel of image view. Performs image binarization by thresholding channel value of each pixel of given image view. This variant of threshold_binary automatically deduces maximum value for each channel of pixel based on channel type. If direction is regular, values greater than threshold_value will be set to maximum numeric limit of channel else 0. If direction is inverse, values greater than threshold_value will be set to 0 else maximum numeric limit of channel. <br /></td></tr>
  83 <tr class="separator:gaeaf67a8717e170a8eacd7ca80273dd85"><td class="memSeparator" colspan="2">&#160;</td></tr>
  84 <tr class="memitem:gacbd19f2c4dc367e744d2aac412f98055"><td class="memTemplParams" colspan="2"><a id="gacbd19f2c4dc367e744d2aac412f98055"></a>
  85 template&lt;typename SrcView , typename DstView &gt; </td></tr>
  86 <tr class="memitem:gacbd19f2c4dc367e744d2aac412f98055"><td class="memTemplItemLeft" align="right" valign="top">void&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="group___image_processing.html#gacbd19f2c4dc367e744d2aac412f98055">threshold_truncate</a> (SrcView const &amp;src_view, DstView const &amp;dst_view, typename <a class="el" href="structboost_1_1gil_1_1channel__type.html">channel_type</a>&lt; DstView &gt;::type threshold_value, <a class="el" href="group___image_processing.html#ga7b2c4d7867de63cfdc39c26d750efab0">threshold_truncate_mode</a> mode=<a class="el" href="group___image_processing.html#gga7b2c4d7867de63cfdc39c26d750efab0af0598264a691a8f62272aca0e79af374">threshold_truncate_mode::threshold</a>, <a class="el" href="group___image_processing.html#gae73d8b37c737a81ffa26b0c5c62d8f0e">threshold_direction</a> direction=<a class="el" href="group___image_processing.html#ggae73d8b37c737a81ffa26b0c5c62d8f0eaaf37d08ae228a87dc6b265fd1019c97d">threshold_direction::regular</a>)</td></tr>
  87 <tr class="memdesc:gacbd19f2c4dc367e744d2aac412f98055"><td class="mdescLeft">&#160;</td><td class="mdescRight">Applies truncating threshold to each pixel of image view. Takes an image view and performes truncating threshold operation on each chennel. If mode is threshold and direction is regular: values greater than threshold_value will be set to threshold_value else no change If mode is threshold and direction is inverse: values less than threshold_value will be set to threshold_value else no change If mode is zero and direction is regular: values less than threshold_value will be set to 0 else no change If mode is zero and direction is inverse: values more than threshold_value will be set to 0 else no change. <br /></td></tr>
  88 <tr class="separator:gacbd19f2c4dc367e744d2aac412f98055"><td class="memSeparator" colspan="2">&#160;</td></tr>
  89 <tr class="memitem:gada979902dabfdd42295b4cb6252e2184"><td class="memTemplParams" colspan="2"><a id="gada979902dabfdd42295b4cb6252e2184"></a>
  90 template&lt;typename SrcView , typename DstView &gt; </td></tr>
  91 <tr class="memitem:gada979902dabfdd42295b4cb6252e2184"><td class="memTemplItemLeft" align="right" valign="top">void&#160;</td><td class="memTemplItemRight" valign="bottom"><b>threshold_optimal</b> (SrcView const &amp;src_view, DstView const &amp;dst_view, <a class="el" href="group___image_processing.html#ga62185ec305fdb480a227c159b9fa5e84">threshold_optimal_value</a> mode=<a class="el" href="group___image_processing.html#gga62185ec305fdb480a227c159b9fa5e84a3d734c6df06af2a3ac4e82483c51c455">threshold_optimal_value::otsu</a>, <a class="el" href="group___image_processing.html#gae73d8b37c737a81ffa26b0c5c62d8f0e">threshold_direction</a> direction=<a class="el" href="group___image_processing.html#ggae73d8b37c737a81ffa26b0c5c62d8f0eaaf37d08ae228a87dc6b265fd1019c97d">threshold_direction::regular</a>)</td></tr>
  92 <tr class="separator:gada979902dabfdd42295b4cb6252e2184"><td class="memSeparator" colspan="2">&#160;</td></tr>
  93 <tr class="memitem:ga6f0ba240537fbf6b89f488594c324038"><td class="memTemplParams" colspan="2"><a id="ga6f0ba240537fbf6b89f488594c324038"></a>
  94 template&lt;typename SrcView , typename DstView &gt; </td></tr>
  95 <tr class="memitem:ga6f0ba240537fbf6b89f488594c324038"><td class="memTemplItemLeft" align="right" valign="top">void&#160;</td><td class="memTemplItemRight" valign="bottom"><b>threshold_adaptive</b> (SrcView const &amp;src_view, DstView const &amp;dst_view, typename <a class="el" href="structboost_1_1gil_1_1channel__type.html">channel_type</a>&lt; DstView &gt;::type max_value, std::size_t kernel_size, threshold_adaptive_method method=threshold_adaptive_method::mean, <a class="el" href="group___image_processing.html#gae73d8b37c737a81ffa26b0c5c62d8f0e">threshold_direction</a> direction=<a class="el" href="group___image_processing.html#ggae73d8b37c737a81ffa26b0c5c62d8f0eaaf37d08ae228a87dc6b265fd1019c97d">threshold_direction::regular</a>, typename <a class="el" href="structboost_1_1gil_1_1channel__type.html">channel_type</a>&lt; DstView &gt;::type constant=0)</td></tr>
  96 <tr class="separator:ga6f0ba240537fbf6b89f488594c324038"><td class="memSeparator" colspan="2">&#160;</td></tr>
  97 <tr class="memitem:gad16d2e4a6cb2065f61f62eabd07c3951"><td class="memTemplParams" colspan="2"><a id="gad16d2e4a6cb2065f61f62eabd07c3951"></a>
  98 template&lt;typename SrcView , typename DstView &gt; </td></tr>
  99 <tr class="memitem:gad16d2e4a6cb2065f61f62eabd07c3951"><td class="memTemplItemLeft" align="right" valign="top">void&#160;</td><td class="memTemplItemRight" valign="bottom"><b>threshold_adaptive</b> (SrcView const &amp;src_view, DstView const &amp;dst_view, std::size_t kernel_size, threshold_adaptive_method method=threshold_adaptive_method::mean, <a class="el" href="group___image_processing.html#gae73d8b37c737a81ffa26b0c5c62d8f0e">threshold_direction</a> direction=<a class="el" href="group___image_processing.html#ggae73d8b37c737a81ffa26b0c5c62d8f0eaaf37d08ae228a87dc6b265fd1019c97d">threshold_direction::regular</a>, int constant=0)</td></tr>
 100 <tr class="separator:gad16d2e4a6cb2065f61f62eabd07c3951"><td class="memSeparator" colspan="2">&#160;</td></tr>
 101 </table>
 102 <a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
 103 <p>Image Processing algorithms. </p>
 104 <p>Direction of image segmentation. The direction specifieds which pixels are considered as corresponding to object and which pixels correspond to background.</p>
 105 <p>Collection of image processing algorithms currently implemented by GIL. </p>
 106 <h2 class="groupheader">Enumeration Type Documentation</h2>
 107 <a id="gae73d8b37c737a81ffa26b0c5c62d8f0e"></a>
 108 <h2 class="memtitle"><span class="permalink"><a href="#gae73d8b37c737a81ffa26b0c5c62d8f0e">&#9670;&nbsp;</a></span>threshold_direction</h2>
 109
 110 <div class="memitem">
 111 <div class="memproto">
 112 <table class="mlabels">
 113   <tr>
 114   <td class="mlabels-left">
 115       <table class="memname">
 116         <tr>
 117           <td class="memname">enum <a class="el" href="group___image_processing.html#gae73d8b37c737a81ffa26b0c5c62d8f0e">threshold_direction</a></td>
 118         </tr>
 119       </table>
 120   </td>
 121   <td class="mlabels-right">
 122 <span class="mlabels"><span class="mlabel">strong</span></span>  </td>
 123   </tr>
 124 </table>
 125 </div><div class="memdoc">
 126 <table class="fieldtable">
 127 <tr><th colspan="2">Enumerator</th></tr><tr><td class="fieldname"><a id="ggae73d8b37c737a81ffa26b0c5c62d8f0eaaf37d08ae228a87dc6b265fd1019c97d"></a>regular&#160;</td><td class="fielddoc"><p>Consider values greater than threshold value. </p>
 128 </td></tr>
 129 <tr><td class="fieldname"><a id="ggae73d8b37c737a81ffa26b0c5c62d8f0eaa91c78e040f7b9d158f381e197f8beb4"></a>inverse&#160;</td><td class="fielddoc"><p>Consider values less than or equal to threshold value. </p>
 130 </td></tr>
 131 </table>
 132
 133 </div>
 134 </div>
 135 <a id="ga62185ec305fdb480a227c159b9fa5e84"></a>
 136 <h2 class="memtitle"><span class="permalink"><a href="#ga62185ec305fdb480a227c159b9fa5e84">&#9670;&nbsp;</a></span>threshold_optimal_value</h2>
 137
 138 <div class="memitem">
 139 <div class="memproto">
 140 <table class="mlabels">
 141   <tr>
 142   <td class="mlabels-left">
 143       <table class="memname">
 144         <tr>
 145           <td class="memname">enum <a class="el" href="group___image_processing.html#ga62185ec305fdb480a227c159b9fa5e84">threshold_optimal_value</a></td>
 146         </tr>
 147       </table>
 148   </td>
 149   <td class="mlabels-right">
 150 <span class="mlabels"><span class="mlabel">strong</span></span>  </td>
 151   </tr>
 152 </table>
 153 </div><div class="memdoc">
 154
 155 <p>Method of optimal threshold value calculation. </p>
 156 <table class="fieldtable">
 157 <tr><th colspan="2">Enumerator</th></tr><tr><td class="fieldname"><a id="gga62185ec305fdb480a227c159b9fa5e84a3d734c6df06af2a3ac4e82483c51c455"></a>otsu&#160;</td><td class="fielddoc"><dl class="todo"><dt><b><a class="el" href="todo.html#_todo000004">Todo:</a></b></dt><dd>TODO </dd></dl>
 158 </td></tr>
 159 </table>
 160
 161 </div>
 162 </div>
 163 <a id="ga7b2c4d7867de63cfdc39c26d750efab0"></a>
 164 <h2 class="memtitle"><span class="permalink"><a href="#ga7b2c4d7867de63cfdc39c26d750efab0">&#9670;&nbsp;</a></span>threshold_truncate_mode</h2>
 165
 166 <div class="memitem">
 167 <div class="memproto">
 168 <table class="mlabels">
 169   <tr>
 170   <td class="mlabels-left">
 171       <table class="memname">
 172         <tr>
 173           <td class="memname">enum <a class="el" href="group___image_processing.html#ga7b2c4d7867de63cfdc39c26d750efab0">threshold_truncate_mode</a></td>
 174         </tr>
 175       </table>
 176   </td>
 177   <td class="mlabels-right">
 178 <span class="mlabels"><span class="mlabel">strong</span></span>  </td>
 179   </tr>
 180 </table>
 181 </div><div class="memdoc">
 182
 183 <p>TODO. </p>
 184 <table class="fieldtable">
 185 <tr><th colspan="2">Enumerator</th></tr><tr><td class="fieldname"><a id="gga7b2c4d7867de63cfdc39c26d750efab0af0598264a691a8f62272aca0e79af374"></a>threshold&#160;</td><td class="fielddoc"><dl class="todo"><dt><b><a class="el" href="todo.html#_todo000005">Todo:</a></b></dt><dd>TODO </dd></dl>
 186 </td></tr>
 187 <tr><td class="fieldname"><a id="gga7b2c4d7867de63cfdc39c26d750efab0ad02c4c4cde7ae76252540d116a40f23a"></a>zero&#160;</td><td class="fielddoc"><dl class="todo"><dt><b><a class="el" href="todo.html#_todo000006">Todo:</a></b></dt><dd>TODO </dd></dl>
 188 </td></tr>
 189 </table>
 190
 191 </div>
 192 </div>
 193 <h2 class="groupheader">Function Documentation</h2>
 194 <a id="ga2074015c3ced619e9075909377c10d5f"></a>
 195 <h2 class="memtitle"><span class="permalink"><a href="#ga2074015c3ced619e9075909377c10d5f">&#9670;&nbsp;</a></span>threshold_binary()</h2>
 196
 197 <div class="memitem">
 198 <div class="memproto">
 199       <table class="memname">
 200         <tr>
 201           <td class="memname">void boost::gil::threshold_binary </td>
 202           <td>(</td>
 203           <td class="paramtype">SrcView const &amp;&#160;</td>
 204           <td class="paramname"><em>src_view</em>, </td>
 205         </tr>
 206         <tr>
 207           <td class="paramkey"></td>
 208           <td></td>
 209           <td class="paramtype">DstView const &amp;&#160;</td>
 210           <td class="paramname"><em>dst_view</em>, </td>
 211         </tr>
 212         <tr>
 213           <td class="paramkey"></td>
 214           <td></td>
 215           <td class="paramtype">typename <a class="el" href="structboost_1_1gil_1_1channel__type.html">channel_type</a>&lt; DstView &gt;::type&#160;</td>
 216           <td class="paramname"><em>threshold_value</em>, </td>
 217         </tr>
 218         <tr>
 219           <td class="paramkey"></td>
 220           <td></td>
 221           <td class="paramtype">typename <a class="el" href="structboost_1_1gil_1_1channel__type.html">channel_type</a>&lt; DstView &gt;::type&#160;</td>
 222           <td class="paramname"><em>max_value</em>, </td>
 223         </tr>
 224         <tr>
 225           <td class="paramkey"></td>
 226           <td></td>
 227           <td class="paramtype"><a class="el" href="group___image_processing.html#gae73d8b37c737a81ffa26b0c5c62d8f0e">threshold_direction</a>&#160;</td>
 228           <td class="paramname"><em>direction</em> = <code><a class="el" href="group___image_processing.html#ggae73d8b37c737a81ffa26b0c5c62d8f0eaaf37d08ae228a87dc6b265fd1019c97d">threshold_direction::regular</a></code>&#160;</td>
 229         </tr>
 230         <tr>
 231           <td></td>
 232           <td>)</td>
 233           <td></td><td></td>
 234         </tr>
 235       </table>
 236 </div><div class="memdoc">
 237
 238 <p>Applies fixed threshold to each pixel of image view. Performs image binarization by thresholding channel value of each pixel of given image view. </p>
 239 <dl class="params"><dt>Parameters</dt><dd>
 240   <table class="params">
 241     <tr><td class="paramname">src_view</td><td>- TODO </td></tr>
 242     <tr><td class="paramname">dst_view</td><td>- TODO </td></tr>
 243     <tr><td class="paramname">threshold_value</td><td>- TODO </td></tr>
 244     <tr><td class="paramname">max_value</td><td>- TODO </td></tr>
 245     <tr><td class="paramname">threshold_direction</td><td>- if regular, values greater than threshold_value are set to max_value else set to 0; if inverse, values greater than threshold_value are set to 0 else set to max_value. </td></tr>
 246   </table>
 247   </dd>
 248 </dl>
 249
 250 </div>
 251 </div>
 252 </div><!-- contents -->
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