title: OpenCV: Fingerprint Image and Compare Against Database
body: <p>I have a database of images. When I take a new picture, <strong>I want to compare it against the images in this database and receive a similarity score (using OpenCV).</strong> This way I want to detect, if I have an image, which is very similar to the fresh picture.</p>
  
  <p>Is it possible to create a fingerprint/hash of my database images and match new ones against it?</p>
  
  <p>I'm searching for a alogrithm code snippet or technical demo and not for a commercial solution.</p>
  
  <p>Best,</p>
  
  <p>Stefan</p>