title: 10m air pistol target detection
body: <p>I want to detect <a href="https://en.wikipedia.org/wiki/10_meter_air_pistol#/media/File:10_meter_air_pistol_target.svg" rel="nofollow noreferrer">10m air pistol target</a> from many perspectives and fixed distance. Perspectives will be from -30˚ to 30˚.</p>
  
  <p>After detection, I want to fix perspective. So that means I want to get 4 corners points which could be used for fixing perspective. </p>
  
  <p>I am using <a href="http://www.acme-firearms.com.au/Shooting%20Targets/krueger-paper-shooting-ISSF-targets/3000.jpg" rel="nofollow noreferrer">standard target</a> for testing purpose.</p>
  
  <p>I have a little experience of OpenCV. So I'll be glad if someone gave me right approach.</p>