Is there a Matlab version of the OpenCV function initUndist​ortRectify​Map()?

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Yuval Levental
Yuval Levental on 10 Nov 2020
Commented: ft28 on 15 Jun 2022 at 12:19
I need the undistortion and rectification transformation maps for a project.

Accepted Answer

Yuval Levental
Yuval Levental on 15 Nov 2020
Answering my own question. There isn't such a function, but finding the (x, y) bounds and Homography matrices from ComputeRectificationParams.m, then using the Homography and undistortion equations, then using interp2 to move forward gives accurate rectification. See for details.
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ft28 on 15 Jun 2022 at 12:19
Hi Yuval, I am also looking for the mapx and mapy calculation like in OpenCV cvInitUndistortRectifyMap().
How did you solve that with using homography matrix and x,y bounds?
I received these information by using paramStruct = toStruct(stereoParams) and get H1, H2, XBounds, YBounds, but dont have any idea how to proceed now. Do you have any code to share?

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More Answers (1)

Debasish Samal
Debasish Samal on 13 Nov 2020
The rectifyStereoImages function returns undistorted and rectified versions of the input images using the stereo parameters. I think, this is what you are looking for. Please refer to the documentation of the same to know more about the function.
  1 Comment
Yuval Levental
Yuval Levental on 13 Nov 2020
Hello, I know about this function, but I need something that specifically returns the x and y transformation maps.
For instance, the Undistortion block outputs coordinates (u,v) at
Is there a similar command in Matlab?

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