Number of MatchPairs

[alien19]

Hello @cvcore, I have an enquiry concerning the number of MatchPairs returned from the size of the pairlist here

I have read in the paper of Fast and Accurate Image Matching with Cascade Hashing for 3D Reconstruction that after selecting the top k candidates, Euclidean distance is calculated and perform Lowe's ratio test.

After the top k candidates are found, we can find the two nearest neighbors among them according to the Euclidean distance, and matches that pass Lowe's ratio test will be accepted.

But I couldn't figure out where this is placed in the code in order to know on what basis we get the number of the matches.

thanks in advance.