Papers › Unsupervised Non-Rigid Point Cloud Matching through Large Vision Models
Unsupervised Non-Rigid Point Cloud Matching through Large Vision Models
Zhangquan Chen, Puhua Jiang, Ruqi Huang
In this paper, we propose a novel learning-based framework for non-rigid point cloud matching, which can be trained purely on point clouds without any correspondence annotation but also be extended naturally to partial-to-full matching. Our key insight is to incorporate semantic features derived from large vision models (LVMs) to geometry-based shape feature learning. Our framework effectively leverages the structural information contained in the semantic features to address ambiguities arise from self-similarities among local geometries. Furthermore, our framework also enjoys the strong generalizability and robustness regarding partial observations of LVMs, leading to improvements in the regarding point cloud matching tasks. In order to achieve the above, we propose a pixel-to-point feature aggregation module, a local and global attention network as well as a geometrical similarity loss function. Experimental results show that our method achieves state-of-the-art results in matching non-rigid point clouds in both near-isometric and heterogeneous shape collection as well as more realistic partial and noisy data.
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