title: Extract part of a image using openCV
body: <p>I'm new to image processing. I wonder if there is any way to extract the star logo from the image?</p>
  <p><a href="https://i.stack.imgur.com/x8Nbb.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/x8Nbb.png" alt="enter image description here" /></a></p>