title: Do two images match? Using Emgu CV C#
body: <p>I have two images, I need to get a return that's a bool match. Everything I'm finding is "getting the difference image" which is not what I want. </p>
  
  <pre><code>        Image&lt;Gray, Byte&gt; img1 = new Image&lt;Gray, Byte&gt;(imageURL);
          Image&lt;Gray, Byte&gt; img2 = new Image&lt;Gray, Byte&gt;(imageURL2);
          Image&lt;Gray, Byte&gt; img3 = img2 - img1;
  </code></pre>
  
  <p>I'd also take some sort of percent match return. </p>