@ARTICLE{xu2023expanding,
  author={Zhenyu Xu and Yuehua Li and Shiqiang Zhu and Yuxiang Sun},
  journal={IEEE Robotics and Automation Letters}, 
  title={Expanding Sparse LiDAR Depth and Guiding Stereo Matching for Robust Dense Depth Estimation}, 
  year={2023},
  volume={8},
  number={3},
  pages={1479-1486},
  doi={10.1109/LRA.2023.3240093}}