ipfml.iqa.fr.html 23 KB

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  76. <div class="section" id="module-ipfml.iqa.fr">
  77. <span id="ipfml-iqa-fr"></span><h1>ipfml.iqa.fr<a class="headerlink" href="#module-ipfml.iqa.fr" title="Permalink to this headline">¶</a></h1>
  78. <p>Full-reference Image Quality Assessment (FR-IQA) methods</p>
  79. <p class="rubric">Functions</p>
  80. <table border="1" class="longtable docutils">
  81. <colgroup>
  82. <col width="10%" />
  83. <col width="90%" />
  84. </colgroup>
  85. <tbody valign="top">
  86. <tr class="row-odd"><td><a class="reference internal" href="#ipfml.iqa.fr.mae" title="ipfml.iqa.fr.mae"><code class="xref py py-obj docutils literal notranslate"><span class="pre">mae</span></code></a>(img_true,&nbsp;img_test)</td>
  87. <td>Returns Mean Absolute Error between two Numpy arrays</td>
  88. </tr>
  89. <tr class="row-even"><td><a class="reference internal" href="#ipfml.iqa.fr.ms_ssim" title="ipfml.iqa.fr.ms_ssim"><code class="xref py py-obj docutils literal notranslate"><span class="pre">ms_ssim</span></code></a>(img_true,&nbsp;img_test)</td>
  90. <td>Implemented later..</td>
  91. </tr>
  92. <tr class="row-odd"><td><a class="reference internal" href="#ipfml.iqa.fr.mse" title="ipfml.iqa.fr.mse"><code class="xref py py-obj docutils literal notranslate"><span class="pre">mse</span></code></a>(img_true,&nbsp;img_test)</td>
  93. <td>Returns Mean-Squared Error score between two Numpy arrays</td>
  94. </tr>
  95. <tr class="row-even"><td><a class="reference internal" href="#ipfml.iqa.fr.psnr" title="ipfml.iqa.fr.psnr"><code class="xref py py-obj docutils literal notranslate"><span class="pre">psnr</span></code></a>(img_true,&nbsp;img_test)</td>
  96. <td>Returns the computed Peak Signal to Noise Ratio (PSNR) between two images</td>
  97. </tr>
  98. <tr class="row-odd"><td><a class="reference internal" href="#ipfml.iqa.fr.rmse" title="ipfml.iqa.fr.rmse"><code class="xref py py-obj docutils literal notranslate"><span class="pre">rmse</span></code></a>(img_true,&nbsp;img_test)</td>
  99. <td>Returns Root Mean-Squared Error score between two Numpy arrays</td>
  100. </tr>
  101. <tr class="row-even"><td><a class="reference internal" href="#ipfml.iqa.fr.ssim" title="ipfml.iqa.fr.ssim"><code class="xref py py-obj docutils literal notranslate"><span class="pre">ssim</span></code></a>(img_true,&nbsp;img_test)</td>
  102. <td>Returns the computed Structural Similarity (SSIM) between two images</td>
  103. </tr>
  104. <tr class="row-odd"><td><a class="reference internal" href="#ipfml.iqa.fr.vif" title="ipfml.iqa.fr.vif"><code class="xref py py-obj docutils literal notranslate"><span class="pre">vif</span></code></a>(img_true,&nbsp;img_test)</td>
  105. <td>Implemented later..</td>
  106. </tr>
  107. </tbody>
  108. </table>
  109. <dl class="function">
  110. <dt id="ipfml.iqa.fr.mae">
  111. <code class="descclassname">ipfml.iqa.fr.</code><code class="descname">mae</code><span class="sig-paren">(</span><em>img_true</em>, <em>img_test</em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/ipfml/iqa/fr.html#mae"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#ipfml.iqa.fr.mae" title="Permalink to this definition">¶</a></dt>
  112. <dd><p>Returns Mean Absolute Error between two Numpy arrays</p>
  113. <table class="docutils field-list" frame="void" rules="none">
  114. <col class="field-name" />
  115. <col class="field-body" />
  116. <tbody valign="top">
  117. <tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
  118. <li><strong>img_true</strong> – Image, numpy array of any dimension</li>
  119. <li><strong>img_test</strong> – Image, numpy array of any dimension</li>
  120. </ul>
  121. </td>
  122. </tr>
  123. <tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">Computed MAE score</p>
  124. </td>
  125. </tr>
  126. <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">NumpyShapeComparisonException</span></code> – if shape of images are not the same</p>
  127. </td>
  128. </tr>
  129. </tbody>
  130. </table>
  131. <p class="rubric">Example</p>
  132. <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">ipfml.iqa</span> <span class="k">import</span> <span class="n">fr</span>
  133. <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>
  134. <span class="gp">&gt;&gt;&gt; </span><span class="n">arr1</span> <span class="o">=</span> <span class="n">np</span><span class="o">.</span><span class="n">arange</span><span class="p">(</span><span class="mi">10</span><span class="p">)</span>
  135. <span class="gp">&gt;&gt;&gt; </span><span class="n">arr2</span> <span class="o">=</span> <span class="n">np</span><span class="o">.</span><span class="n">arange</span><span class="p">(</span><span class="mi">5</span><span class="p">,</span> <span class="mi">15</span><span class="p">)</span>
  136. <span class="gp">&gt;&gt;&gt; </span><span class="n">mae_score</span> <span class="o">=</span> <span class="n">fr</span><span class="o">.</span><span class="n">mae</span><span class="p">(</span><span class="n">arr1</span><span class="p">,</span> <span class="n">arr2</span><span class="p">)</span>
  137. <span class="gp">&gt;&gt;&gt; </span><span class="n">mae_score</span>
  138. <span class="go">5.0</span>
  139. </pre></div>
  140. </div>
  141. </dd></dl>
  142. <dl class="function">
  143. <dt id="ipfml.iqa.fr.ms_ssim">
  144. <code class="descclassname">ipfml.iqa.fr.</code><code class="descname">ms_ssim</code><span class="sig-paren">(</span><em>img_true</em>, <em>img_test</em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/ipfml/iqa/fr.html#ms_ssim"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#ipfml.iqa.fr.ms_ssim" title="Permalink to this definition">¶</a></dt>
  145. <dd><p>Implemented later..</p>
  146. </dd></dl>
  147. <dl class="function">
  148. <dt id="ipfml.iqa.fr.mse">
  149. <code class="descclassname">ipfml.iqa.fr.</code><code class="descname">mse</code><span class="sig-paren">(</span><em>img_true</em>, <em>img_test</em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/ipfml/iqa/fr.html#mse"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#ipfml.iqa.fr.mse" title="Permalink to this definition">¶</a></dt>
  150. <dd><p>Returns Mean-Squared Error score between two Numpy arrays</p>
  151. <table class="docutils field-list" frame="void" rules="none">
  152. <col class="field-name" />
  153. <col class="field-body" />
  154. <tbody valign="top">
  155. <tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
  156. <li><strong>img_true</strong> – Image, numpy array of any dimension</li>
  157. <li><strong>img_test</strong> – Image, numpy array of any dimension</li>
  158. </ul>
  159. </td>
  160. </tr>
  161. <tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">Computed MSE score</p>
  162. </td>
  163. </tr>
  164. <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">NumpyShapeComparisonException</span></code> – if shape of images are not the same</p>
  165. </td>
  166. </tr>
  167. </tbody>
  168. </table>
  169. <p class="rubric">Example</p>
  170. <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">ipfml.iqa</span> <span class="k">import</span> <span class="n">fr</span>
  171. <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>
  172. <span class="gp">&gt;&gt;&gt; </span><span class="n">arr1</span> <span class="o">=</span> <span class="n">np</span><span class="o">.</span><span class="n">arange</span><span class="p">(</span><span class="mi">10</span><span class="p">)</span>
  173. <span class="gp">&gt;&gt;&gt; </span><span class="n">arr2</span> <span class="o">=</span> <span class="n">np</span><span class="o">.</span><span class="n">arange</span><span class="p">(</span><span class="mi">5</span><span class="p">,</span> <span class="mi">15</span><span class="p">)</span>
  174. <span class="gp">&gt;&gt;&gt; </span><span class="n">mse_score</span> <span class="o">=</span> <span class="n">fr</span><span class="o">.</span><span class="n">mse</span><span class="p">(</span><span class="n">arr1</span><span class="p">,</span> <span class="n">arr2</span><span class="p">)</span>
  175. <span class="gp">&gt;&gt;&gt; </span><span class="n">mse_score</span>
  176. <span class="go">25.0</span>
  177. </pre></div>
  178. </div>
  179. </dd></dl>
  180. <dl class="function">
  181. <dt id="ipfml.iqa.fr.psnr">
  182. <code class="descclassname">ipfml.iqa.fr.</code><code class="descname">psnr</code><span class="sig-paren">(</span><em>img_true</em>, <em>img_test</em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/ipfml/iqa/fr.html#psnr"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#ipfml.iqa.fr.psnr" title="Permalink to this definition">¶</a></dt>
  183. <dd><p>Returns the computed Peak Signal to Noise Ratio (PSNR) between two images</p>
  184. <table class="docutils field-list" frame="void" rules="none">
  185. <col class="field-name" />
  186. <col class="field-body" />
  187. <tbody valign="top">
  188. <tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
  189. <li><strong>img_true</strong> – Image, numpy array of any dimension</li>
  190. <li><strong>img_test</strong> – Image, numpy array of any dimension</li>
  191. </ul>
  192. </td>
  193. </tr>
  194. <tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first last">Computed PSNR score</p>
  195. </td>
  196. </tr>
  197. </tbody>
  198. </table>
  199. <p class="rubric">Example</p>
  200. <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">ipfml.iqa</span> <span class="k">import</span> <span class="n">fr</span>
  201. <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>
  202. <span class="gp">&gt;&gt;&gt; </span><span class="n">arr1</span> <span class="o">=</span> <span class="n">np</span><span class="o">.</span><span class="n">arange</span><span class="p">(</span><span class="mi">100</span><span class="p">)</span><span class="o">.</span><span class="n">reshape</span><span class="p">(</span><span class="mi">10</span><span class="p">,</span> <span class="mi">10</span><span class="p">)</span>
  203. <span class="gp">&gt;&gt;&gt; </span><span class="n">arr2</span> <span class="o">=</span> <span class="n">np</span><span class="o">.</span><span class="n">arange</span><span class="p">(</span><span class="mi">5</span><span class="p">,</span> <span class="mi">105</span><span class="p">)</span><span class="o">.</span><span class="n">reshape</span><span class="p">(</span><span class="mi">10</span><span class="p">,</span> <span class="mi">10</span><span class="p">)</span>
  204. <span class="gp">&gt;&gt;&gt; </span><span class="n">psnr_score</span> <span class="o">=</span> <span class="n">fr</span><span class="o">.</span><span class="n">psnr</span><span class="p">(</span><span class="n">arr1</span><span class="p">,</span> <span class="n">arr2</span><span class="p">)</span>
  205. <span class="gp">&gt;&gt;&gt; </span><span class="nb">int</span><span class="p">(</span><span class="n">psnr_score</span><span class="p">)</span>
  206. <span class="go">34</span>
  207. </pre></div>
  208. </div>
  209. </dd></dl>
  210. <dl class="function">
  211. <dt id="ipfml.iqa.fr.rmse">
  212. <code class="descclassname">ipfml.iqa.fr.</code><code class="descname">rmse</code><span class="sig-paren">(</span><em>img_true</em>, <em>img_test</em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/ipfml/iqa/fr.html#rmse"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#ipfml.iqa.fr.rmse" title="Permalink to this definition">¶</a></dt>
  213. <dd><p>Returns Root Mean-Squared Error score between two Numpy arrays</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"><ul class="first simple">
  219. <li><strong>img_true</strong> – Image, numpy array of any dimension</li>
  220. <li><strong>img_test</strong> – Image, numpy array of any dimension</li>
  221. </ul>
  222. </td>
  223. </tr>
  224. <tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">Computed RMSE score</p>
  225. </td>
  226. </tr>
  227. <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">NumpyShapeComparisonException</span></code> – if shape of images are not the same</p>
  228. </td>
  229. </tr>
  230. </tbody>
  231. </table>
  232. <p class="rubric">Example</p>
  233. <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">ipfml.iqa</span> <span class="k">import</span> <span class="n">fr</span>
  234. <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>
  235. <span class="gp">&gt;&gt;&gt; </span><span class="n">arr1</span> <span class="o">=</span> <span class="n">np</span><span class="o">.</span><span class="n">arange</span><span class="p">(</span><span class="mi">10</span><span class="p">)</span>
  236. <span class="gp">&gt;&gt;&gt; </span><span class="n">arr2</span> <span class="o">=</span> <span class="n">np</span><span class="o">.</span><span class="n">arange</span><span class="p">(</span><span class="mi">5</span><span class="p">,</span> <span class="mi">15</span><span class="p">)</span>
  237. <span class="gp">&gt;&gt;&gt; </span><span class="n">rmse_score</span> <span class="o">=</span> <span class="n">fr</span><span class="o">.</span><span class="n">rmse</span><span class="p">(</span><span class="n">arr1</span><span class="p">,</span> <span class="n">arr2</span><span class="p">)</span>
  238. <span class="gp">&gt;&gt;&gt; </span><span class="n">rmse_score</span>
  239. <span class="go">5.0</span>
  240. </pre></div>
  241. </div>
  242. </dd></dl>
  243. <dl class="function">
  244. <dt id="ipfml.iqa.fr.ssim">
  245. <code class="descclassname">ipfml.iqa.fr.</code><code class="descname">ssim</code><span class="sig-paren">(</span><em>img_true</em>, <em>img_test</em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/ipfml/iqa/fr.html#ssim"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#ipfml.iqa.fr.ssim" title="Permalink to this definition">¶</a></dt>
  246. <dd><p>Returns the computed Structural Similarity (SSIM) between two images</p>
  247. <table class="docutils field-list" frame="void" rules="none">
  248. <col class="field-name" />
  249. <col class="field-body" />
  250. <tbody valign="top">
  251. <tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
  252. <li><strong>img_true</strong> – Image, numpy array of any dimension</li>
  253. <li><strong>img_test</strong> – Image, numpy array of any dimension</li>
  254. </ul>
  255. </td>
  256. </tr>
  257. <tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first last">Computed SSIM score</p>
  258. </td>
  259. </tr>
  260. </tbody>
  261. </table>
  262. <p class="rubric">Example</p>
  263. <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">ipfml.iqa</span> <span class="k">import</span> <span class="n">fr</span>
  264. <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>
  265. <span class="gp">&gt;&gt;&gt; </span><span class="n">arr1</span> <span class="o">=</span> <span class="n">np</span><span class="o">.</span><span class="n">arange</span><span class="p">(</span><span class="mi">100</span><span class="p">)</span><span class="o">.</span><span class="n">reshape</span><span class="p">(</span><span class="mi">10</span><span class="p">,</span> <span class="mi">10</span><span class="p">)</span>
  266. <span class="gp">&gt;&gt;&gt; </span><span class="n">arr2</span> <span class="o">=</span> <span class="n">np</span><span class="o">.</span><span class="n">arange</span><span class="p">(</span><span class="mi">5</span><span class="p">,</span> <span class="mi">105</span><span class="p">)</span><span class="o">.</span><span class="n">reshape</span><span class="p">(</span><span class="mi">10</span><span class="p">,</span> <span class="mi">10</span><span class="p">)</span>
  267. <span class="gp">&gt;&gt;&gt; </span><span class="n">ssim_score</span> <span class="o">=</span> <span class="n">fr</span><span class="o">.</span><span class="n">ssim</span><span class="p">(</span><span class="n">arr1</span><span class="p">,</span> <span class="n">arr2</span><span class="p">)</span>
  268. <span class="gp">&gt;&gt;&gt; </span><span class="nb">int</span><span class="p">(</span><span class="n">ssim_score</span><span class="p">)</span>
  269. <span class="go">0</span>
  270. </pre></div>
  271. </div>
  272. </dd></dl>
  273. <dl class="function">
  274. <dt id="ipfml.iqa.fr.vif">
  275. <code class="descclassname">ipfml.iqa.fr.</code><code class="descname">vif</code><span class="sig-paren">(</span><em>img_true</em>, <em>img_test</em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/ipfml/iqa/fr.html#vif"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#ipfml.iqa.fr.vif" title="Permalink to this definition">¶</a></dt>
  276. <dd><p>Implemented later..</p>
  277. </dd></dl>
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