title: Matching similar images in OpenCV
body: <p>I have two sets of images, {H} and {L}. {H} consists of 512x512 images. {L} consists of all of the images in {H}, but scaled down to 32x32-128x128 and with compression artifacts from lossy compression.</p>
  
  <p>What would be the best way of matching images in {H} to their closest match in {L} using OpenCV?</p>