About 3D deformable convolution

[GitHub-TXZ]

what is the role of 2D/deformable_LKA/deformable_2dconvolution.py and 2D/deformable_LKA/deformable_3dconvolution.py ?
Are they python implementation of dcn? If that's the case, why you need to use D3D?

Futhermore, as far as I konwn, D3D process THW data, they don't deform at T. I can't see the any modifications to D3D's dcn library.

So how do you deform at three spatial dimension? I mean, D, H, W. Thank you very much.