title: Finding the center of circles in an image
body: <p>I'm fairly new to programming and need to write a program that will find the center of 4 discs (circles) that are located in each corner of a square image.</p>
  
  <p>I don't know the exact coordinates of the discs but have a very good approximation of them. How can I go about finding the location of the centers of each of the 4 discs?</p>