Journal
OPTICS EXPRESS
Volume 30, Issue 11, Pages 18856-18873Publisher
Optica Publishing Group
DOI: 10.1364/OE.452597
Keywords
-
Categories
Funding
- National Natural Science Foundation of China [62173296]
- National Key Research and Development Program of China [2018YFB1700100]
Ask authors/readers for more resources
This paper proposes a pixel-wise residual shrinkage network for photon-efficient imaging from high-noise data. It improves the accuracy and precision of depth estimation by denoising with soft thresholding and pixel-wise classification, and demonstrates superior performance on simulated and real-world datasets.
Single-photon light detection and ranging (LiDAR) has been widely applied to 3D imaging in challenging scenarios. However, limited signal photon counts and high noises in the collected data have posed great challenges for predicting the depth image precisely. In this paper, we propose a pixel-wise residual shrinkage network for photon-efficient imaging from high-noise data, which adaptively generates the optimal thresholds for each pixel and denoises the intermediate features by soft thresholding. Besides, redefining the optimization target as pixel-wise classification provides a sharp advantage in producing confident and accurate depth estimation when compared with existing research. Comprehensive experiments conducted on both simulated and real-world datasets demonstrate that the proposed model outperforms the state-of-the-arts and maintains robust imaging performance under different signal-to-noise ratios including the extreme case of 1:100. (C) 2022 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available