Question about forward matching.

[needsee]

Congratulation for your great work!
I have several questions about bidirectional matching:
1、How do you perform bipartite matching between the points on the reference mask Pr and the patch-level features of target image Zt. As the dimension of the reference mask is 3256192 and the dimension of the patch feature is 7681612.
2、How to solve the problem of having more points than patch features(192 patch) using bipartite matching in forward matching? The number of Pr is much greater than the number of patch feature, how to evaluate the similarity of the Pr and Zt？
3、Could you elaborate on the implementation process and implementation details of forward matching or the bidirectional matching？

[needsee]

As the dimension of the reference mask is 3x256x192 and the dimension of the patch feature is 768x16x12.