There are two repositories containing the respective codes for -
(1) Optical flow under nighttime (CycleFlowGAN_NighttimeFlow)
(2) Depth from stereo under nighttime (CycleStereoGAN_NighttimeDepth).
Please cite the paper if you find any of the codes useful:
@article{sharma2019depth,
title={Depth Estimation in Nighttime using Stereo-Consistent Cyclic Translations},
author={Sharma, Aashish and Tan, Robby T and Cheong, Loong-Fah},
journal={arXiv preprint arXiv:1909.13701},
year={2019}
}