title: Python- Trying to find image with largest green circle
body: <p>I have been given a file with hundreds of images. Each image contains a single green circle on a white background.
  I need to  determine which image contains the circle with the largest diameter with a python program. 
  Each of these images has the same dimensions, so the answer could also be determined by finding the image with the most amount of green pixels, I believe. I am aware that scipy can handle images, but when I try to run the following code:</p>
  
  <pre><code>from scipy import misc
  
  image=open("/Users/Myname/Desktop/greencircles/image_0.png", "r")
  misc.imread(image)
  </code></pre>
  
  <p>...It gives the error "module" has no attribute "imread"
  A I going about this in the right direction? I have searched for solutions for a while now to no avail.</p>
  
  <p>Thanks for any advice!</p>