what is the difference between camera calibration and rectified

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

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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".

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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 ( 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 ( 2021-04-03 12:30:04 -0500 )edit

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