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yashbhalgat / HashNeRF-pytorch

Pure PyTorch Implementation of NVIDIA paper on Instant Training of Neural Graphics primitives: https://nvlabs.github.io/instant-ngp/
MIT License
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"coarse and fine network"? #33

Closed Misaliet closed 1 year ago

Misaliet commented 1 year ago

Hi,

I have take a look at your code and the original instant-ngp code, it seems there is a difference about coarse and fine network. I'm not sure if my understanding is correct, so I want to ask and make sure.

The corse and fine network structures in the original nerf do not seem to be used in the instant-ngp. The instant-ngp uses "Occupancy Grids" (Appendix E.2) to sample points to avoid sampling points at empty positions. Your code here is handled differently from instant-ngp, is this understanding correct?

Cheers, Light

yashbhalgat commented 1 year ago

Hi @Misaliet, yes, that's correct.