1 College of Intelligence and Computing, Tianjin University
2 Medical School, Nanjing University
†Equal contribution * Corresponding author
Fig 1. We contribute a framework for estimating human poses and shapes from lensless measurements. The first five columns show the experimental results on various datasets (captured by our lensless imaging system), and the last two columns show the experimental results on real scenes.
Human pose and shape (HPS) estimation with lensless imaging is not only beneficial to privacy protection but also can be used in covert surveillance scenarios due to the small size and simple structure of this device. However, this task presents significant challenges due to the inherent ambiguity of the captured measurements and lacks effective methods for directly estimating human pose and shape from lensless data. In this paper, we propose the first end-to-end framework to recover 3D human poses and shapes from lensless measurements to our knowledge. We specifically design a multi-scale lensless feature decoder to decode the lensless measurements through the optically encoded mask for efficient feature extraction. We also propose a double-head auxiliary supervision mechanism to improve the estimation accuracy of human limb ends. Besides, we establish a lensless imaging system and verify the effectiveness of our method on various datasets acquired by our lensless imaging system.
Fig 2. Overview of the proposed framework. A measurement M is passsed through a Multi-Scale Lensless Feature Decoder to get spatial characteristics at different scales. These feature maps are fed into the regressor for human pose and shape estimation. Also these feature maps are fed into the Double-Head Auxiliary Supervision, in order to improve the accuracy of the estimation.
Haoyang Ge, Qiao Feng, Hailong Jia, Xiongzheng Li, Xiangjun Yin, You Zhou, Jingyu Yang, Kun Li. "LPSNet: End-to-End Human Pose and Shape Estimation with Lensless Imaging". In Proc. CVPR, 2024.
@inproceedings{ge2024LPSNet,
title = {LPSNet: End-to-End Human Pose and Shape Estimation with Lensless Imaging},
author = {Ge, Haoyang and Feng, Qiao and Jia, Hailong and Li, Xiongzheng and Yin, Xiangjun and Zhou, You and Yang, Jingyu and Li, Kun},
booktitle={Proceedings of the IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR)},
year={2024},
}