Given two mat: mat1 and mat2, I extracted SIFT key points: kps1 and kps2, then I computed the descriptors: desc1 and desc2.
I want to know if I do a Flann match against these two descriptors, what will happen if they have different number of descriptors in them?
For what I experienced, it seems the number of matches will always be the same as the number of descriptors in desc1, the query descriptor.