How to use warpPerspective for a single coordinate of Mat

Question

I successfully found the homography matrix between 2 images using:

Mat H = findHomography(mpts_2, mpts_1, RANSAC, 1, outlier_mask);

Now, with the given Mat HI wan't to find the transformation for the four corner points of an image. So how can I get the transformation for these points using warpPerspective()?!? Or do I have to use the transform() function?

I need the transformation of this points to get the intersection of the warped image with the original image. Thanks in advance for you efforts...

Answer 1

I think you are interested in perspectiveTransform(...) . It is analogous to warpPerspective(...) only it operates on vectors, not on an entire image.