Question about patch selection

[JeiminJeon]

Hello! Thank you for the great work.
I have some confusion about the patch selection process.
In section 3.3 of the paper, it is stated that it is important to select patches dynamically for each image instance.
However, it seems that there is no patch selection process differently for each instance (in section 3.4 - Solving Patch Dependency Across Layers in Patch Dim & in base_model.py).
I am wondering which point I misunderstood.
Thank you.