title: Compare 2 cv::Mat
body: <p>I have 2 cv::Mat array (with same size), and when I want to compare them (if identical), I used cv::compare</p>
  
  <pre><code>cv::compare(mat1,mat2,dst,cv::CMP_EQ);
  </code></pre>
  
  <p>Is there any function that return true/false?</p>