title: What is depth information among an image?
body: <p>Given pixel location (x,y) in an image, how to get the depth information of this pixel? </p>
  
  <p>In other words, I just obtain (x,y) location of a 3D point in the image plane using projection matrix and now I want to obtain a depth map. What pixel values should I take to obtain such depth map?</p>
  
  <p>NB : I am trying to follow this code :
   !(<a href="https://github.com/balcilar/DenseDepthMap" rel="nofollow noreferrer">https://github.com/balcilar/DenseDepthMap</a>)</p>