title: How to detect infrared light with OpenCV
body: <p>I'm trying to use OpenCV to detect IR point using in-built camera. My camera can see infrared light. However I don't have a clue how to distinguish between visible light and IR light.
  After transformation to RGB we can't distinguish, but maybe OpenCV has some methods to do it. </p>
  
  <p>Does anybody know about such OpenCV functions? Or how to do it in other way?</p>
  
  <p>--edit</p>
  
  <p>Is it possible to recognise for example light wavelength using laptop in-build camera ? Or it's just impossible to distinguish between visible and infrared light without using special camera?</p>