what is ColorWeightLUT and DepthWeightLUT in the code?

[dogdogdod]

When I studied the code ,I didn`t understand what is ColorWeightLUT and DepthWeightLUT in the code?If you see this problem , can you tell me .

[wliusjtu]

When I studied the code ,I didn`t understand what is ColorWeightLUT and DepthWeightLUT in the code?If you see this problem , can you tell me .

This is a lookup table for computing the weight, this could reduce computational cost, please refer to our C++ code for more details.