rectifyStereoImages output looks twisted.

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SANG GYU LEE
SANG GYU LEE 2018-8-22
回答： Subhash Variya 2021-6-27
Hi, I have implemented rectifyStereoImages, but the result looks weird. Please look at the images attached. fig1 and 2 are the original files used. Here is my script.
left = webcam(3);
right = webcam(1);
I1 = snapshot(left);
figure(1)
imshow(I1);
I2 = snapshot(right);
figure(2)
imshow(I2);
[J1,J2]=rectifyStereoImages(I1,I2,stereoParams,'OutputView','full');
figure(3)
imshow(cat(3,J1(:,:,1),J2(:,:,2:3)),'InitialMagnification',50);

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回答（2 个）

Astha Singh
Astha Singh 2018-8-31
Hi Sang,
You probably need to fine-tune the 'stereoParams' that you are using.
Most likely that is what is causing the anomaly.
I tried uncalibrated rectification using the two images that you have provided and was able to produce the following rectified image -
You can try this method using the MATLAB Documentation link - Uncalibrated Stereo Image Rectification.
Hope this helps!
  1 个评论
SANG GYU LEE
SANG GYU LEE 2018-8-31
编辑：SANG GYU LEE 2018-8-31
Astha! Thank you very much for your comment! My goal is to get the disparity map and the depth (distance) from a camera to an object. I saw the instruction about uncalibrated rectification for stereo vision, but I am not quite sure how https://www.mathworks.com/help/vision/examples/uncalibrated-stereo-image-rectification.html and https://www.mathworks.com/help/vision/examples/depth-estimation-from-stereo-video.html are used together.
So assuming that I have the raw images taken from two cameras, should I do the uncalibrated rectification first -> crop the overlapping parts from the two images -> run stereoCameraCalibrator? If so, doesn't uncalibrated rectification affect the depth value?

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Subhash Variya
Subhash Variya 2021-6-27
Hello SANG, i have the same problem. do you have the solution now?

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