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OpenCV
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<p><a href="http://www.opencv.org">OpenCV</a> is an open source computer vision image and video processing library.</p>
<p>Some pre-defined classifiers can be found <a href="https://github.com/opencv/opencv/tree/master/data">here</a>.</p>
<p>To setup OpenCV with Home Assistant, add the following section to your <code class="highlighter-rouge">configuration.yaml</code> file:</p>
<div class="language-yaml highlighter-rouge"><pre class="highlight"><code><span class="c1"># Example configuration.yaml entry</span>
<span class="s">image_processing</span><span class="pi">:</span>
<span class="pi">-</span> <span class="s">platform</span><span class="pi">:</span> <span class="s">opencv</span>
<span class="s">name</span><span class="pi">:</span> <span class="s">Front Door Faces</span>
<span class="s">source</span><span class="pi">:</span>
<span class="pi">-</span> <span class="s">entity_id</span><span class="pi">:</span> <span class="s">camera.front_door</span>
<span class="s">classifier</span><span class="pi">:</span>
<span class="s">mom</span><span class="pi">:</span> <span class="s">/path/to/classifier.xml</span>
</code></pre>
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<ul>
<li><strong>name</strong> (<em>Required</em>): The name of the OpenCV image processor.</li>
<li><strong>source</strong> array (<em>Required</em>): List of image sources.
<ul>
<li><strong>entity_id</strong> (<em>Required</em>): A camera entity id to get picture from.
<ul>
<li><strong>name</strong> (<em>Optional</em>): This parameter allows you to override the name of your <code class="highlighter-rouge">image_processing</code> entity.</li>
</ul>
</li>
</ul>
</li>
<li><strong>classifier</strong> (<em>Optional</em>): Dictionary of name to path to the classifier xml file. If this field is not provided, a face classifier will be downloaded from OpenCVs Github repo.</li>
</ul>
<p><strong>classifier</strong> may also be defined as a dictionary of names to classifier configurations:</p>
<div class="language-yaml highlighter-rouge"><pre class="highlight"><code> <span class="s">mom</span><span class="pi">:</span>
<span class="s">file</span><span class="pi">:</span> <span class="s">/path/to/classifier/xml</span>
<span class="s">neighbors</span><span class="pi">:</span> <span class="s">4</span>
<span class="s">min_size</span><span class="pi">:</span> <span class="s">(40, 40)</span>
<span class="s">scale</span><span class="pi">:</span> <span class="s">1.1f</span>
</code></pre>
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<ul>
<li><strong>file</strong> (<em>Required</em>): The path to the classifier xml file.</li>
<li><strong>scale</strong> (<em>Optional</em>): The scale to perform when processing, this is a <code class="highlighter-rouge">float</code> value that must be greater than or equal to <code class="highlighter-rouge">1.0</code>, default is <code class="highlighter-rouge">1.1</code>.</li>
<li><strong>neighbors</strong> (<em>Optional</em>): The minimum number of neighbors required for a match, default is <code class="highlighter-rouge">4</code>. The higher this number, the more picky the matching will be; lower the number, the more false positives you may experience.</li>
</ul>
<p>If you would like to see the regions that OpenCV has detected, add this OpenCV camera to your configs <code class="highlighter-rouge">custom_components/camera</code> directory: <a href="https://gist.github.com/Teagan42/bf4b941b34a79a3e184e149ff1efd82f">https://gist.github.com/Teagan42/bf4b941b34a79a3e184e149ff1efd82f</a></p>
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Introduced in release: 0.47
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Source:
<a href='https://github.com/home-assistant/home-assistant/blob/master/homeassistant/components/image_processing/opencv.py'>image_processing/opencv.py</a>
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This is a platform for
<a href='/components/image_processing/'>the Image Processing component</a>.
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<div class='section'>
<h1 class="title delta">Category Image Processing</h1>
<ul class='divided'>
<li>
<a href='/components/image_processing.dlib_face_detect/'>Dlib Face Detect</a>
</li>
<li>
<a href='/components/image_processing.dlib_face_identify/'>Dlib Face Identify</a>
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<a href='/components/image_processing.microsoft_face_detect/'>Microsoft Face Detect</a>
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<a href='/components/image_processing.microsoft_face_identify/'>Microsoft Face Identify</a>
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<li>
<a href='/components/image_processing.openalpr_cloud/'>OpenALPR Cloud</a>
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<li>
<a href='/components/image_processing.openalpr_local/'>OpenALPR Local</a>
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<li>
OpenCV
</li>
<li>
<a href='/components/image_processing.seven_segments/'>Seven segments display</a>
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</ul>
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