what is compute_sharpness used for in nerf loader?

[neilgogogo]

Thank you very much for your work. It's very impressive.

I have a question about sharpness. what is this function compute_sharpness used for? Can I filter this function?

instant-ngp/src/nerf_loader.cu

Line 598 in 09f3597

compute_sharpness<<<blocks, threads, 0, nullptr>>>(result.sharpness_resolution, result.image_resolution, result.n_images, result.images_data.data(), result.sharpness_data.data());

Kind regards

[Tom94]

Thanks for the kind words! :)

That function is somewhat of an edge detector. We've used it in experiments where we tried importance sampling the NeRF optimization proportional to the image-space sharpness, error, and various combinations thereof -- you can toggle these modes in the GUI.