问题
I'm using OpenCV 3.2 and I have a Stitcher set up to stitch two images. The stitching works great. But once it is complete I want to be able to determine the mapping from a point in image A to the corresponding point in image B.
I don't care how the images are laid out in the panorama, I just need to be able to transform from (x_A,y_A), the coordinates of a point in image A, to (x_B, y_B), the coordinates of the corresponding point in image B.
How do I get that mapping out of OpenCV using the Stitcher class?
Note: It's also acceptable to tell me how to get the mapping from image A to the panorama and then from the panorama to image B.
Note: Also, if there's a cheaper way where I can just get the mapping and I don't have to invoke the whole Stitcher pipeline, I'd like to know that too.
来源：https://stackoverflow.com/questions/41623700/opencv-how-to-map-between-corresponding-points-of-stitched-images