Question on triangular kernel for LNCC

[mathpluscode]

Subject of the issue

https://github.com/DeepRegNet/DeepReg/blob/main/deepreg/model/loss/image.py#L88

The triangular filters are of shape (kernel_size-1, kernel_size-1, kernel_size-1, ch, 1) unlike the other two cases.
My question is simply, is this intended or not :) @acasamitjana

[acasamitjana]

Hey, I'm back on track now, sorry for the delay.
It was not intended, we should increase padding +1 on the right of each dimension.

[mathpluscode]

sure, once after #568 we can fix it

or you fix it in main, i will fix it in my branch, both are ok ^^