how to use sun3d for depth refinement ?

[Fromandto]

I read this from slidingShapes supplementary material

"To refine the depth, the RMRC data set uses the code from [1] to obtain a better depth map,
integrating from other frames."

I wonder if there's a single function for depth refinement in this git or i have to build a refinement function by myself .

if anyone knows, pls kindly answer this issue, thanks in advance