StereoRectifyUncalibrated not accepting same array as FindFundamentalMat

Question

I've used FindFundamentalMat with a CvMat I've created from the points generated by FindChessboardCorners. The documentation specifies that StereoRectifyUncalibrated can use the same format of corresponding points as FindFundamentalMat.

However, when I try to use StereoRectifyUncalibrated, I get the following error:

OpenCV Error: Assertion failed (CV_IS_MAT(_points1) && CV_IS_MAT(_points2) && (_points1->rows == 1 || _points1->cols == 1) && (_points2->rows == 1 || _points2->cols == 1) && CV_ARE_SIZES_EQ(_points1, _points2)) in cvStereoRectifyUncalibrated, file /home/moos/prog/opencv/OpenCV-2.1.0/src/cv/cvcalibration.cpp, line 2539 

It seems that the array of points for StereoRectifyUncalibrated should be 1 dimensional, but how can I then specify x and y coordinates for the corresponding points?

Previously I did:

cv.FindFundamentalMat(points1,points2,F,method=cv.CV_FM_RANSAC,param1=1.,param2=cv.CV_FM_8POINT)
cv.Save("F.xml",F);
cv.StereoRectifyUncalibrated(points1,points2,F,(320,240),H1,H2,threshold=5)

The error occurred at StereoRectifyUncalibrated(not at FindFundamentalMat).

Then I tried :

cv.StereoRectifyUncalibrated(points1[1],points2[1],F,(320,240),H1,H2,threshold=5)

No error ocurred! But I am not sure if I am doing it right or not.

Answer 1

So following the opencv-users link above, I understood you have to do

points1r = points1.reshape((points1.shape[0] * 2, 1))

before entering it in cv2.StereoRectifyUncalibrated

And it should work.