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I compute the distance from an object (Chessboard) using OpenCv and my camera parameters using those steps:

findChessboardCorners

solvePnP

->Distance

The distance I get is between two points: the chessboard and the camera. My question is where is the origine of my camera?

I know perfectly about my Chessboard but not my camera in terms of reference.

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  • $\begingroup$ Have you calibrated your camera? and what the reference point for calibration? $\endgroup$ – MimSaad Apr 13 '17 at 14:01
  • $\begingroup$ @MimSaad Yes I calibrated my camera and the reference point is the corner of the chessboard $\endgroup$ – ROS_OPENCV Apr 13 '17 at 14:06
  • $\begingroup$ Ok, so you have distance of checkerboard from the camera? $\endgroup$ – MimSaad Apr 13 '17 at 14:09
  • $\begingroup$ @MimSaad Yes exactly $\endgroup$ – ROS_OPENCV Apr 13 '17 at 14:11
  • $\begingroup$ if by distance you euclidean distance, then infinite number of x,y and z's can be the solution. Or you mean depth (ie only Z)? $\endgroup$ – MimSaad Apr 13 '17 at 14:17

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