Hello! Thank you for your implementation! Right now I'm working on converting output density to PNG slices like it's done in the instant-ngp repo - link. These slices are used to generate a point cloud.
In instant-ngp they have a threshold=2.5 as default, so the final equation for png slices looks like slices=(density - 2.5) * 32 + 128.5 and then slices are clipped into the range from 0 to 255. So I'm curious about this 2.5 threshold and how to properly calculate it in your implementation. Do you have any tips on how to threshold density correctly?
Hi you can still use 2.5 in nerfacc. I'm not sure if there is a way to properly calculate this threshold as it relates to your network and ray marching step size. Generally 2 ~ 5 works fine.
Hello! Thank you for your implementation! Right now I'm working on converting output density to PNG slices like it's done in the instant-ngp repo - link. These slices are used to generate a point cloud.
In instant-ngp they have a threshold=2.5 as default, so the final equation for png slices looks like
slices=(density - 2.5) * 32 + 128.5
and then slices are clipped into the range from 0 to 255. So I'm curious about this 2.5 threshold and how to properly calculate it in your implementation. Do you have any tips on how to threshold density correctly?