title: ImageMagick chop to remove whitespace rows in image
body: <p>Trying to remove white space rows in an image:</p>
  
  <p><a href="https://i.stack.imgur.com/Nrnea.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Nrnea.png" alt="enter image description here"></a></p>
  
  <p>I tried :</p>
  
  <pre><code>convert image_name.png -chop 110x170 + 240x300 chopped.png
  </code></pre>
  
  <p>as pixels 110-170 and 240-300 need to be cut. 
  The resulting image should retain all sub images with little white space.
  I am very open to suggestions, also beyond imagemagic, as long as it can be done in the terminal and to multiple image batches.</p>