ipfml.processing.html 32 KB

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  73. <div class="section" id="module-ipfml.processing">
  74. <span id="ipfml-processing"></span><h1>ipfml.processing<a class="headerlink" href="#module-ipfml.processing" title="Permalink to this headline">¶</a></h1>
  75. <p>Functions to quickly extract reduced information from image</p>
  76. <p class="rubric">Functions</p>
  77. <table border="1" class="longtable docutils">
  78. <colgroup>
  79. <col width="10%" />
  80. <col width="90%" />
  81. </colgroup>
  82. <tbody valign="top">
  83. <tr class="row-odd"><td><a class="reference internal" href="#ipfml.processing.divide_in_blocks" title="ipfml.processing.divide_in_blocks"><code class="xref py py-obj docutils literal notranslate"><span class="pre">divide_in_blocks</span></code></a>(image,&nbsp;block_size[,&nbsp;pil])</td>
  84. <td>Divide image into equal size blocks</td>
  85. </tr>
  86. <tr class="row-even"><td><a class="reference internal" href="#ipfml.processing.get_LAB_L_SVD" title="ipfml.processing.get_LAB_L_SVD"><code class="xref py py-obj docutils literal notranslate"><span class="pre">get_LAB_L_SVD</span></code></a>(image)</td>
  87. <td>Returns Singular values from LAB L Image information</td>
  88. </tr>
  89. <tr class="row-odd"><td><a class="reference internal" href="#ipfml.processing.get_LAB_L_SVD_U" title="ipfml.processing.get_LAB_L_SVD_U"><code class="xref py py-obj docutils literal notranslate"><span class="pre">get_LAB_L_SVD_U</span></code></a>(image)</td>
  90. <td>Returns U SVD from L of LAB Image information</td>
  91. </tr>
  92. <tr class="row-even"><td><a class="reference internal" href="#ipfml.processing.get_LAB_L_SVD_V" title="ipfml.processing.get_LAB_L_SVD_V"><code class="xref py py-obj docutils literal notranslate"><span class="pre">get_LAB_L_SVD_V</span></code></a>(image)</td>
  93. <td>Returns V SVD from L of LAB Image information</td>
  94. </tr>
  95. <tr class="row-odd"><td><a class="reference internal" href="#ipfml.processing.get_LAB_L_SVD_s" title="ipfml.processing.get_LAB_L_SVD_s"><code class="xref py py-obj docutils literal notranslate"><span class="pre">get_LAB_L_SVD_s</span></code></a>(image)</td>
  96. <td>Returns s (Singular values) SVD from L of LAB Image information</td>
  97. </tr>
  98. <tr class="row-even"><td><a class="reference internal" href="#ipfml.processing.rgb_to_LAB_L_bits" title="ipfml.processing.rgb_to_LAB_L_bits"><code class="xref py py-obj docutils literal notranslate"><span class="pre">rgb_to_LAB_L_bits</span></code></a>(image,&nbsp;interval)</td>
  99. <td>Returns only bits from LAB L canal specified into the interval</td>
  100. </tr>
  101. <tr class="row-odd"><td><a class="reference internal" href="#ipfml.processing.rgb_to_LAB_L_low_bits" title="ipfml.processing.rgb_to_LAB_L_low_bits"><code class="xref py py-obj docutils literal notranslate"><span class="pre">rgb_to_LAB_L_low_bits</span></code></a>(image[,&nbsp;nb_bits])</td>
  102. <td>Convert RGB Image into Lab L channel image using only 4 low bits values</td>
  103. </tr>
  104. <tr class="row-even"><td><a class="reference internal" href="#ipfml.processing.rgb_to_grey_low_bits" title="ipfml.processing.rgb_to_grey_low_bits"><code class="xref py py-obj docutils literal notranslate"><span class="pre">rgb_to_grey_low_bits</span></code></a>(image[,&nbsp;nb_bits])</td>
  105. <td>Convert RGB Image into grey image using only 4 low bits values</td>
  106. </tr>
  107. <tr class="row-odd"><td><a class="reference internal" href="#ipfml.processing.rgb_to_mscn" title="ipfml.processing.rgb_to_mscn"><code class="xref py py-obj docutils literal notranslate"><span class="pre">rgb_to_mscn</span></code></a>(image)</td>
  108. <td>Convert RGB Image into Mean Subtracted Contrast Normalized (MSCN)</td>
  109. </tr>
  110. </tbody>
  111. </table>
  112. <dl class="function">
  113. <dt id="ipfml.processing.divide_in_blocks">
  114. <code class="descclassname">ipfml.processing.</code><code class="descname">divide_in_blocks</code><span class="sig-paren">(</span><em>image</em>, <em>block_size</em>, <em>pil=True</em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/ipfml/processing.html#divide_in_blocks"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#ipfml.processing.divide_in_blocks" title="Permalink to this definition">¶</a></dt>
  115. <dd><p>Divide image into equal size blocks</p>
  116. <table class="docutils field-list" frame="void" rules="none">
  117. <col class="field-name" />
  118. <col class="field-body" />
  119. <tbody valign="top">
  120. <tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
  121. <li><strong>image</strong> – PIL Image or Numpy array</li>
  122. <li><strong>block</strong> – tuple (width, height) representing the size of each dimension of the block</li>
  123. <li><strong>pil</strong> – block type returned (default True)</li>
  124. </ul>
  125. </td>
  126. </tr>
  127. <tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">list containing all 2D Numpy blocks (in RGB or not)</p>
  128. </td>
  129. </tr>
  130. <tr class="field-odd field"><th class="field-name">Raises:</th><td class="field-body"><p class="first last"><code class="xref py py-exc docutils literal notranslate"><span class="pre">ValueError</span></code> – If <cite>image_width</cite> or <cite>image_heigt</cite> are not compatible to produce correct block sizes</p>
  131. </td>
  132. </tr>
  133. </tbody>
  134. </table>
  135. <p>Example:</p>
  136. <div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="gp">&gt;&gt;&gt; </span><span class="kn">import</span> <span class="nn">numpy</span> <span class="k">as</span> <span class="nn">np</span>
  137. <span class="gp">&gt;&gt;&gt; </span><span class="kn">from</span> <span class="nn">PIL</span> <span class="k">import</span> <span class="n">Image</span>
  138. <span class="gp">&gt;&gt;&gt; </span><span class="kn">from</span> <span class="nn">ipfml</span> <span class="k">import</span> <span class="n">processing</span>
  139. <span class="gp">&gt;&gt;&gt; </span><span class="kn">from</span> <span class="nn">ipfml</span> <span class="k">import</span> <span class="n">metrics</span>
  140. <span class="gp">&gt;&gt;&gt; </span><span class="n">image_values</span> <span class="o">=</span> <span class="n">np</span><span class="o">.</span><span class="n">random</span><span class="o">.</span><span class="n">randint</span><span class="p">(</span><span class="mi">255</span><span class="p">,</span> <span class="n">size</span><span class="o">=</span><span class="p">(</span><span class="mi">800</span><span class="p">,</span> <span class="mi">800</span><span class="p">,</span> <span class="mi">3</span><span class="p">))</span>
  141. <span class="gp">&gt;&gt;&gt; </span><span class="n">blocks</span> <span class="o">=</span> <span class="n">divide_in_blocks</span><span class="p">(</span><span class="n">image_values</span><span class="p">,</span> <span class="p">(</span><span class="mi">20</span><span class="p">,</span> <span class="mi">20</span><span class="p">))</span>
  142. <span class="gp">&gt;&gt;&gt; </span><span class="nb">len</span><span class="p">(</span><span class="n">blocks</span><span class="p">)</span>
  143. <span class="go">1600</span>
  144. <span class="gp">&gt;&gt;&gt; </span><span class="n">blocks</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">width</span>
  145. <span class="go">20</span>
  146. <span class="gp">&gt;&gt;&gt; </span><span class="n">blocks</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">height</span>
  147. <span class="go">20</span>
  148. <span class="gp">&gt;&gt;&gt; </span><span class="n">img_l</span> <span class="o">=</span> <span class="n">Image</span><span class="o">.</span><span class="n">open</span><span class="p">(</span><span class="s1">&#39;./images/test_img.png&#39;</span><span class="p">)</span>
  149. <span class="gp">&gt;&gt;&gt; </span><span class="n">L</span> <span class="o">=</span> <span class="n">metrics</span><span class="o">.</span><span class="n">get_LAB_L</span><span class="p">(</span><span class="n">img_l</span><span class="p">)</span>
  150. <span class="gp">&gt;&gt;&gt; </span><span class="n">blocks_L</span> <span class="o">=</span> <span class="n">divide_in_blocks</span><span class="p">(</span><span class="n">L</span><span class="p">,</span> <span class="p">(</span><span class="mi">100</span><span class="p">,</span> <span class="mi">100</span><span class="p">))</span>
  151. <span class="gp">&gt;&gt;&gt; </span><span class="nb">len</span><span class="p">(</span><span class="n">blocks_L</span><span class="p">)</span>
  152. <span class="go">4</span>
  153. <span class="gp">&gt;&gt;&gt; </span><span class="n">blocks_L</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">width</span>
  154. <span class="go">100</span>
  155. </pre></div>
  156. </div>
  157. </dd></dl>
  158. <dl class="function">
  159. <dt id="ipfml.processing.get_LAB_L_SVD">
  160. <code class="descclassname">ipfml.processing.</code><code class="descname">get_LAB_L_SVD</code><span class="sig-paren">(</span><em>image</em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/ipfml/processing.html#get_LAB_L_SVD"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#ipfml.processing.get_LAB_L_SVD" title="Permalink to this definition">¶</a></dt>
  161. <dd><p>Returns Singular values from LAB L Image information</p>
  162. <table class="docutils field-list" frame="void" rules="none">
  163. <col class="field-name" />
  164. <col class="field-body" />
  165. <tbody valign="top">
  166. <tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><strong>image</strong> – PIL Image or Numpy array</td>
  167. </tr>
  168. <tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body">U, s, V information obtained from SVD compression using Lab</td>
  169. </tr>
  170. </tbody>
  171. </table>
  172. <p>Example:</p>
  173. <div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="gp">&gt;&gt;&gt; </span><span class="kn">from</span> <span class="nn">PIL</span> <span class="k">import</span> <span class="n">Image</span>
  174. <span class="gp">&gt;&gt;&gt; </span><span class="kn">from</span> <span class="nn">ipfml</span> <span class="k">import</span> <span class="n">processing</span>
  175. <span class="gp">&gt;&gt;&gt; </span><span class="n">img</span> <span class="o">=</span> <span class="n">Image</span><span class="o">.</span><span class="n">open</span><span class="p">(</span><span class="s1">&#39;./images/test_img.png&#39;</span><span class="p">)</span>
  176. <span class="gp">&gt;&gt;&gt; </span><span class="n">U</span><span class="p">,</span> <span class="n">s</span><span class="p">,</span> <span class="n">V</span> <span class="o">=</span> <span class="n">processing</span><span class="o">.</span><span class="n">get_LAB_L_SVD</span><span class="p">(</span><span class="n">img</span><span class="p">)</span>
  177. <span class="gp">&gt;&gt;&gt; </span><span class="n">U</span><span class="o">.</span><span class="n">shape</span>
  178. <span class="go">(200, 200)</span>
  179. <span class="gp">&gt;&gt;&gt; </span><span class="nb">len</span><span class="p">(</span><span class="n">s</span><span class="p">)</span>
  180. <span class="go">200</span>
  181. <span class="gp">&gt;&gt;&gt; </span><span class="n">V</span><span class="o">.</span><span class="n">shape</span>
  182. <span class="go">(200, 200)</span>
  183. </pre></div>
  184. </div>
  185. </dd></dl>
  186. <dl class="function">
  187. <dt id="ipfml.processing.get_LAB_L_SVD_U">
  188. <code class="descclassname">ipfml.processing.</code><code class="descname">get_LAB_L_SVD_U</code><span class="sig-paren">(</span><em>image</em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/ipfml/processing.html#get_LAB_L_SVD_U"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#ipfml.processing.get_LAB_L_SVD_U" title="Permalink to this definition">¶</a></dt>
  189. <dd><p>Returns U SVD from L of LAB Image information</p>
  190. <table class="docutils field-list" frame="void" rules="none">
  191. <col class="field-name" />
  192. <col class="field-body" />
  193. <tbody valign="top">
  194. <tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><strong>image</strong> – PIL Image or Numpy array</td>
  195. </tr>
  196. <tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body">U matrix of SVD compression</td>
  197. </tr>
  198. </tbody>
  199. </table>
  200. <p>Example:</p>
  201. <div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="gp">&gt;&gt;&gt; </span><span class="kn">from</span> <span class="nn">PIL</span> <span class="k">import</span> <span class="n">Image</span>
  202. <span class="gp">&gt;&gt;&gt; </span><span class="kn">from</span> <span class="nn">ipfml</span> <span class="k">import</span> <span class="n">processing</span>
  203. <span class="gp">&gt;&gt;&gt; </span><span class="n">img</span> <span class="o">=</span> <span class="n">Image</span><span class="o">.</span><span class="n">open</span><span class="p">(</span><span class="s1">&#39;./images/test_img.png&#39;</span><span class="p">)</span>
  204. <span class="gp">&gt;&gt;&gt; </span><span class="n">U</span> <span class="o">=</span> <span class="n">processing</span><span class="o">.</span><span class="n">get_LAB_L_SVD_U</span><span class="p">(</span><span class="n">img</span><span class="p">)</span>
  205. <span class="gp">&gt;&gt;&gt; </span><span class="n">U</span><span class="o">.</span><span class="n">shape</span>
  206. <span class="go">(200, 200)</span>
  207. </pre></div>
  208. </div>
  209. </dd></dl>
  210. <dl class="function">
  211. <dt id="ipfml.processing.get_LAB_L_SVD_V">
  212. <code class="descclassname">ipfml.processing.</code><code class="descname">get_LAB_L_SVD_V</code><span class="sig-paren">(</span><em>image</em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/ipfml/processing.html#get_LAB_L_SVD_V"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#ipfml.processing.get_LAB_L_SVD_V" title="Permalink to this definition">¶</a></dt>
  213. <dd><p>Returns V SVD from L of LAB Image information</p>
  214. <table class="docutils field-list" frame="void" rules="none">
  215. <col class="field-name" />
  216. <col class="field-body" />
  217. <tbody valign="top">
  218. <tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><strong>image</strong> – PIL Image or Numpy array</td>
  219. </tr>
  220. <tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body">V matrix of SVD compression</td>
  221. </tr>
  222. </tbody>
  223. </table>
  224. <p>Example:</p>
  225. <div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="gp">&gt;&gt;&gt; </span><span class="kn">from</span> <span class="nn">PIL</span> <span class="k">import</span> <span class="n">Image</span>
  226. <span class="gp">&gt;&gt;&gt; </span><span class="kn">from</span> <span class="nn">ipfml</span> <span class="k">import</span> <span class="n">processing</span>
  227. <span class="gp">&gt;&gt;&gt; </span><span class="n">img</span> <span class="o">=</span> <span class="n">Image</span><span class="o">.</span><span class="n">open</span><span class="p">(</span><span class="s1">&#39;./images/test_img.png&#39;</span><span class="p">)</span>
  228. <span class="gp">&gt;&gt;&gt; </span><span class="n">V</span> <span class="o">=</span> <span class="n">processing</span><span class="o">.</span><span class="n">get_LAB_L_SVD_V</span><span class="p">(</span><span class="n">img</span><span class="p">)</span>
  229. <span class="gp">&gt;&gt;&gt; </span><span class="n">V</span><span class="o">.</span><span class="n">shape</span>
  230. <span class="go">(200, 200)</span>
  231. </pre></div>
  232. </div>
  233. </dd></dl>
  234. <dl class="function">
  235. <dt id="ipfml.processing.get_LAB_L_SVD_s">
  236. <code class="descclassname">ipfml.processing.</code><code class="descname">get_LAB_L_SVD_s</code><span class="sig-paren">(</span><em>image</em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/ipfml/processing.html#get_LAB_L_SVD_s"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#ipfml.processing.get_LAB_L_SVD_s" title="Permalink to this definition">¶</a></dt>
  237. <dd><p>Returns s (Singular values) SVD from L of LAB Image information</p>
  238. <table class="docutils field-list" frame="void" rules="none">
  239. <col class="field-name" />
  240. <col class="field-body" />
  241. <tbody valign="top">
  242. <tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><strong>image</strong> – PIL Image or Numpy array</td>
  243. </tr>
  244. <tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body">vector of singular values</td>
  245. </tr>
  246. </tbody>
  247. </table>
  248. <p>Example:</p>
  249. <div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="gp">&gt;&gt;&gt; </span><span class="kn">from</span> <span class="nn">PIL</span> <span class="k">import</span> <span class="n">Image</span>
  250. <span class="gp">&gt;&gt;&gt; </span><span class="kn">from</span> <span class="nn">ipfml</span> <span class="k">import</span> <span class="n">processing</span>
  251. <span class="gp">&gt;&gt;&gt; </span><span class="n">img</span> <span class="o">=</span> <span class="n">Image</span><span class="o">.</span><span class="n">open</span><span class="p">(</span><span class="s1">&#39;./images/test_img.png&#39;</span><span class="p">)</span>
  252. <span class="gp">&gt;&gt;&gt; </span><span class="n">s</span> <span class="o">=</span> <span class="n">processing</span><span class="o">.</span><span class="n">get_LAB_L_SVD_s</span><span class="p">(</span><span class="n">img</span><span class="p">)</span>
  253. <span class="gp">&gt;&gt;&gt; </span><span class="nb">len</span><span class="p">(</span><span class="n">s</span><span class="p">)</span>
  254. <span class="go">200</span>
  255. </pre></div>
  256. </div>
  257. </dd></dl>
  258. <dl class="function">
  259. <dt id="ipfml.processing.rgb_to_LAB_L_bits">
  260. <code class="descclassname">ipfml.processing.</code><code class="descname">rgb_to_LAB_L_bits</code><span class="sig-paren">(</span><em>image</em>, <em>interval</em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/ipfml/processing.html#rgb_to_LAB_L_bits"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#ipfml.processing.rgb_to_LAB_L_bits" title="Permalink to this definition">¶</a></dt>
  261. <dd><p>Returns only bits from LAB L canal specified into the interval</p>
  262. <table class="docutils field-list" frame="void" rules="none">
  263. <col class="field-name" />
  264. <col class="field-body" />
  265. <tbody valign="top">
  266. <tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
  267. <li><strong>image</strong> – image to convert using this interval of bits value to keep</li>
  268. <li><strong>interval</strong> – (begin, end) of bits values</li>
  269. </ul>
  270. </td>
  271. </tr>
  272. <tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first last">2D Numpy array with reduced values</p>
  273. </td>
  274. </tr>
  275. </tbody>
  276. </table>
  277. <div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="gp">&gt;&gt;&gt; </span><span class="kn">from</span> <span class="nn">PIL</span> <span class="k">import</span> <span class="n">Image</span>
  278. <span class="gp">&gt;&gt;&gt; </span><span class="kn">from</span> <span class="nn">ipfml</span> <span class="k">import</span> <span class="n">processing</span>
  279. <span class="gp">&gt;&gt;&gt; </span><span class="n">img</span> <span class="o">=</span> <span class="n">Image</span><span class="o">.</span><span class="n">open</span><span class="p">(</span><span class="s1">&#39;./images/test_img.png&#39;</span><span class="p">)</span>
  280. <span class="gp">&gt;&gt;&gt; </span><span class="n">bits_Lab_l_img</span> <span class="o">=</span> <span class="n">processing</span><span class="o">.</span><span class="n">rgb_to_LAB_L_bits</span><span class="p">(</span><span class="n">img</span><span class="p">,</span> <span class="p">(</span><span class="mi">2</span><span class="p">,</span> <span class="mi">6</span><span class="p">))</span>
  281. <span class="gp">&gt;&gt;&gt; </span><span class="n">bits_Lab_l_img</span><span class="o">.</span><span class="n">shape</span>
  282. <span class="go">(200, 200)</span>
  283. </pre></div>
  284. </div>
  285. </dd></dl>
  286. <dl class="function">
  287. <dt id="ipfml.processing.rgb_to_LAB_L_low_bits">
  288. <code class="descclassname">ipfml.processing.</code><code class="descname">rgb_to_LAB_L_low_bits</code><span class="sig-paren">(</span><em>image</em>, <em>nb_bits=4</em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/ipfml/processing.html#rgb_to_LAB_L_low_bits"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#ipfml.processing.rgb_to_LAB_L_low_bits" title="Permalink to this definition">¶</a></dt>
  289. <dd><p>Convert RGB Image into Lab L channel image using only 4 low bits values</p>
  290. <table class="docutils field-list" frame="void" rules="none">
  291. <col class="field-name" />
  292. <col class="field-body" />
  293. <tbody valign="top">
  294. <tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
  295. <li><strong>image</strong> – 3D RGB image Numpy array or PIL RGB image</li>
  296. <li><strong>nb_bits</strong> – optional parameter which indicates the number of bits to keep (default 4)</li>
  297. </ul>
  298. </td>
  299. </tr>
  300. <tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first last">2D Numpy array with low bits information kept</p>
  301. </td>
  302. </tr>
  303. </tbody>
  304. </table>
  305. <p>Example:</p>
  306. <div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="gp">&gt;&gt;&gt; </span><span class="kn">from</span> <span class="nn">PIL</span> <span class="k">import</span> <span class="n">Image</span>
  307. <span class="gp">&gt;&gt;&gt; </span><span class="kn">from</span> <span class="nn">ipfml</span> <span class="k">import</span> <span class="n">processing</span>
  308. <span class="gp">&gt;&gt;&gt; </span><span class="n">img</span> <span class="o">=</span> <span class="n">Image</span><span class="o">.</span><span class="n">open</span><span class="p">(</span><span class="s1">&#39;./images/test_img.png&#39;</span><span class="p">)</span>
  309. <span class="gp">&gt;&gt;&gt; </span><span class="n">low_bits_Lab_l_img</span> <span class="o">=</span> <span class="n">processing</span><span class="o">.</span><span class="n">rgb_to_LAB_L_low_bits</span><span class="p">(</span><span class="n">img</span><span class="p">,</span> <span class="mi">5</span><span class="p">)</span>
  310. <span class="gp">&gt;&gt;&gt; </span><span class="n">low_bits_Lab_l_img</span><span class="o">.</span><span class="n">shape</span>
  311. <span class="go">(200, 200)</span>
  312. </pre></div>
  313. </div>
  314. </dd></dl>
  315. <dl class="function">
  316. <dt id="ipfml.processing.rgb_to_grey_low_bits">
  317. <code class="descclassname">ipfml.processing.</code><code class="descname">rgb_to_grey_low_bits</code><span class="sig-paren">(</span><em>image</em>, <em>nb_bits=4</em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/ipfml/processing.html#rgb_to_grey_low_bits"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#ipfml.processing.rgb_to_grey_low_bits" title="Permalink to this definition">¶</a></dt>
  318. <dd><p>Convert RGB Image into grey image using only 4 low bits values</p>
  319. <table class="docutils field-list" frame="void" rules="none">
  320. <col class="field-name" />
  321. <col class="field-body" />
  322. <tbody valign="top">
  323. <tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
  324. <li><strong>image</strong> – 3D RGB image Numpy array or PIL RGB image</li>
  325. <li><strong>nb_bits</strong> – optional parameter which indicates the number of bits to keep (default 4)</li>
  326. </ul>
  327. </td>
  328. </tr>
  329. <tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first last">2D Numpy array with low bits information kept</p>
  330. </td>
  331. </tr>
  332. </tbody>
  333. </table>
  334. <p>Example:</p>
  335. <div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="gp">&gt;&gt;&gt; </span><span class="kn">from</span> <span class="nn">PIL</span> <span class="k">import</span> <span class="n">Image</span>
  336. <span class="gp">&gt;&gt;&gt; </span><span class="kn">from</span> <span class="nn">ipfml</span> <span class="k">import</span> <span class="n">processing</span>
  337. <span class="gp">&gt;&gt;&gt; </span><span class="n">img</span> <span class="o">=</span> <span class="n">Image</span><span class="o">.</span><span class="n">open</span><span class="p">(</span><span class="s1">&#39;./images/test_img.png&#39;</span><span class="p">)</span>
  338. <span class="gp">&gt;&gt;&gt; </span><span class="n">low_bits_grey_img</span> <span class="o">=</span> <span class="n">processing</span><span class="o">.</span><span class="n">rgb_to_grey_low_bits</span><span class="p">(</span><span class="n">img</span><span class="p">,</span> <span class="mi">5</span><span class="p">)</span>
  339. <span class="gp">&gt;&gt;&gt; </span><span class="n">low_bits_grey_img</span><span class="o">.</span><span class="n">shape</span>
  340. <span class="go">(200, 200)</span>
  341. </pre></div>
  342. </div>
  343. </dd></dl>
  344. <dl class="function">
  345. <dt id="ipfml.processing.rgb_to_mscn">
  346. <code class="descclassname">ipfml.processing.</code><code class="descname">rgb_to_mscn</code><span class="sig-paren">(</span><em>image</em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/ipfml/processing.html#rgb_to_mscn"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#ipfml.processing.rgb_to_mscn" title="Permalink to this definition">¶</a></dt>
  347. <dd><p>Convert RGB Image into Mean Subtracted Contrast Normalized (MSCN)</p>
  348. <table class="docutils field-list" frame="void" rules="none">
  349. <col class="field-name" />
  350. <col class="field-body" />
  351. <tbody valign="top">
  352. <tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><strong>image</strong> – 3D RGB image Numpy array or PIL RGB image</td>
  353. </tr>
  354. <tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body">2D Numpy array with MSCN information</td>
  355. </tr>
  356. </tbody>
  357. </table>
  358. <p>Example:</p>
  359. <div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="gp">&gt;&gt;&gt; </span><span class="kn">from</span> <span class="nn">PIL</span> <span class="k">import</span> <span class="n">Image</span>
  360. <span class="gp">&gt;&gt;&gt; </span><span class="kn">from</span> <span class="nn">ipfml</span> <span class="k">import</span> <span class="n">processing</span>
  361. <span class="gp">&gt;&gt;&gt; </span><span class="n">img</span> <span class="o">=</span> <span class="n">Image</span><span class="o">.</span><span class="n">open</span><span class="p">(</span><span class="s1">&#39;./images/test_img.png&#39;</span><span class="p">)</span>
  362. <span class="gp">&gt;&gt;&gt; </span><span class="n">img_mscn</span> <span class="o">=</span> <span class="n">processing</span><span class="o">.</span><span class="n">rgb_to_mscn</span><span class="p">(</span><span class="n">img</span><span class="p">)</span>
  363. <span class="gp">&gt;&gt;&gt; </span><span class="n">img_mscn</span><span class="o">.</span><span class="n">shape</span>
  364. <span class="go">(200, 200)</span>
  365. </pre></div>
  366. </div>
  367. </dd></dl>
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