Such a clever technique

[WanShaw]

How do you think of using np.roll and Identity matrix to achieve the difference in similarity across the picture?
In precompute_BM.py, function get_add_patch_matrix use it.

[Ryanshuai]

Hi WanShaw,
Glad to hear that~
CNN uses a similar technique to calculate the convolution of features.
You can refer to my other repository, https://github.com/Ryanshuai/NumPy_CNN/blob/master/layers/Conv/Conv.py

[WanShaw]

Thank you for your answer!