I hope to do knnMatch in a small Window instead of the whole image.
For example, if I know the picture is up side down, I can just match the keypoint in the bottom part, but not the whole image.
How can I do knnMatch in this way?
1 | initial version |
I hope to do knnMatch in a small Window instead of the whole image.
For example, if I know the picture is up side down, I can just match the keypoint in the bottom part, but not the whole image.
How can I do knnMatch in this way?