title: How to detect if two images are similar?
body: <blockquote>
    <p><strong>Possible Duplicate:</strong><br>
    <a href="https://stackoverflow.com/questions/25977/how-can-i-measure-the-similarity-between-two-images">How can I measure the similarity between two images?</a>  </p>
  </blockquote>
  
  
  
  <p>how to check if <strong>two images are similar</strong>, not the same, but similar?</p>
  
  <p>Like <strong>color counting</strong> or <strong>bytes</strong> or <strong>something equals</strong>?</p>
  
  <p>In C#.</p>
  
  <p>I need make a tool that recognize duplicate photos on pc.</p>
  
  <p>thanks.</p>