title: Detecting mostly empty images using imagemagick
body: <p>I'd like to use imagemagick or graphicsmagick to detect whether an image has basically no content. </p>
  
  <p>Here is an example:</p>
  
  <p><a href="https://i.stack.imgur.com/VuGGo.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/VuGGo.png" alt="example"></a></p>
  
  <p><a href="https://s3-us-west-2.amazonaws.com/idelog/token_page_images/120c6af0-73eb-11e4-9483-4d4827589112_embed.png" rel="nofollow noreferrer">https://s3-us-west-2.amazonaws.com/idelog/token_page_images/120c6af0-73eb-11e4-9483-4d4827589112_embed.png</a></p>
  
  <p>I've scoured Fred's imagemagick scripts, but I can't figure out if there is a way to do this:</p>
  
  <p><a href="http://www.fmwconcepts.com/imagemagick/" rel="nofollow noreferrer">http://www.fmwconcepts.com/imagemagick/</a></p>