title: Library to identifying the similarity between 2 image in android
body: <p>Suggestions on the best (preferably easiest way) to compare two images in android.
  The first image is in my SD Card.
  The second image was taken using Camera in android.</p>
  
  <p>How to measure percentage similarity between those 2 images??</p>
  
  <p>Thanks a lot.</p>