Ask Your Question
0

Determine object world coordinate by two or few cameras

asked 2013-05-06 13:59:01 -0500

Victor1234 gravatar image

I calibrated two cameras and i know it extrinsic parameters, how i can determine world coordinate of object by two frame from them?

edit retag flag offensive close merge delete

1 answer

Sort by ยป oldest newest most voted
4

answered 2013-05-07 03:03:05 -0500

Look at the stereo-vision methods (Google it) or the OpenCV implementation StereoBM or StereoSGBM. You also could look at the samples: cpp/stereo_match.cpp or python2/stereo_match.py or gpu/stereo_match.cpp or gpu/stereo_multi.cpp in the OpenCV trunk.

If you have more than two camera, epipolar geometry can be hard to understand... You could look at the Shape From Silhouettes (the principles) and a lot of details here. It allows you to reconstruct a 3D object from multiple views, which could be a solution for you to find the 3D coordinate.

Otherwise, almost in the same way, you could look at Space Carving which used photometric consistency for objects reconstruction.

edit flag offensive delete link more
Login/Signup to Answer

Question Tools

Stats

Asked: 2013-05-06 13:59:01 -0500

Seen: 573 times

Last updated: May 07 '13