Meaning of the code and it's significance is not explained in the paper

[tmondalvogo]

Hello Dear Author,
Thank you for providing the code. This is helpful to understand the work and to evaluate it. I am having problems in understanding the the functionality of these lines of code :

From the line :

KpSFR/worldcup_train_loader.py

Line 164 in 3d4b796

inter01 = np.intersect1d(lookup_list[0], lookup_list[1])

To the line :

KpSFR/worldcup_train_loader.py

Line 176 in 3d4b796

new_lookup_list[2, remain_ind] = utils.to_torch(non_inter21)

I can understand what operation you are doing in these lines but I can't understand why you are doing these operations and what is the purpose of it

The lookup_list is a 3 x 4 matrix. What is the significance of these 3 rows? that means why are you randomly collecting the 4 warped key points, 3 times, and then after obtaining these 3 vectors (each vector is with 4 values), why are you doing such operations in lines 164 - 176 ?
Such operations or technique is nowhere mentioned in the paper and I am not able to understand why you do it ?

Thank you in advance for your reply