title: Detecting an object on the image based on geometrical form
body: <p>I have a basic understanding in image processing and now studying in-depth the "Digital Image Processing" book by Gonzales.</p>
  
  <p>When image given and object of interest approximated form is known (e.g. circle, triangle),
  what is the best algorithm / method to find this object on image?</p>
  
  <p>The object can be slightly deformed, so brute force approach will not help.</p>