ROS Resources: Documentation | Support | Discussion Forum | Index | Service Status | ros @ Robotics Stack Exchange
Ask Your Question

what is the difference between camera calibration and rectified

asked 2021-04-02 11:08:37 -0500

john-le gravatar image

I want understanding about camera calibration vs rectified image or video data.

edit retag flag offensive close merge delete

1 Answer

Sort by ยป oldest newest most voted

answered 2021-04-02 12:38:15 -0500

Camera calibration, as the name suggests, will try to solve for the intrinsics of the camera which could be distortions due to the lens, skew, etc. This link has good resources about camera calibration. After the calibration process, rectification matrices and intrinsic matrices are generated. You then have to apply these matrices to every new image to correct them. A corrected image is called rectified image.
So to answer your question, calibration is a "process" and a rectified image is the "outcome".

edit flag offensive delete link more


can i do monocular camera to process to calibration then to rectified outcome? also the stereo camera, which one is better to use?

john-le gravatar image john-le  ( 2021-04-03 02:35:37 -0500 )edit

Yes, you can calibrate monocular cameras as well as stereo cameras. Both will involve a similar process but in the case of stereo cameras, you will have an additional step to triangulate the relative location of the stereo pair.
Choice between monocular and stereo depends on your application. If you can get by with a single camera then why use a pair? You can keep processing to a minimum. On the other hand, if you feel that depth information (from a stereo pair) can improve your results and you can afford the processing then you should use stereo cameras.

Akhil Kurup gravatar image Akhil Kurup  ( 2021-04-03 12:30:04 -0500 )edit

Question Tools



Asked: 2021-04-02 11:08:37 -0500

Seen: 765 times

Last updated: Apr 02 '21