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changwoonchoi / IBL-NeRF

Official implementation of IBL-NeRF: Image-Based Lighting Formulation of Neural Radiance Fields (Computer Graphics Forum, Pacific Graphics 2023)
https://changwoon.info/publications/IBL-NeRF
MIT License
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BRDF_LUT image generate #6

Closed XiaoKangW closed 1 year ago

XiaoKangW commented 1 year ago

Hi, Changwoon,

Thanks for you update the repository! I find there was the BRDF LUT image in data folder, so i want to ask how to generate the the BRDF LUT image, and this image is just used for kitchen dataset or all dataset.

Thanks!

changwoonchoi commented 1 year ago

Hi, thank you for your interest in our work.

BRDF LUT image is the BRDF integration map which stores scale and bias value to the surface's Fresnel response. Thus, the LUT image is identical across all scenes.

The detailed explanation regarding the LUT can be found on the following website. Please refer to it. https://learnopengl.com/PBR/IBL/Specular-IBL