Abstract:While 3D shape representations enable powerful reasoning in many visual and perception applications, learning 3D shape priors tends to be constrained to the specific categories trained on, leading to an inefficient learning process, particularly for general applications with unseen categories. Thus, we propose PatchComplete, which learns effective shape priors based on multi-resolution local patches, which are often more general than full shapes (e.g., chairs and tables often both share legs) and thus enable geometric reasoning about unseen class categories. To learn these shared substructures, we learn multi-resolution patch priors across all train categories, which are then associated to input partial shape observations by attention across the patch priors, and finally decoded into a complete shape reconstruction. Such patch-based priors avoid overfitting to specific train categories and enable reconstruction on entirely unseen categories at test time. We demonstrate the effectiveness of our approach on synthetic ShapeNet data as well as challenging real-scanned objects from ScanNet, which include noise and clutter, improving over state of the art in novel-category shape completion by 19.3% in chamfer distance on ShapeNet, and 9.0% for ScanNet.
| Comments: | Video link: this https URL ; Project page: this https URL ; Accepted to NeurIPS'22 |
| Subjects: | Computer Vision and Pattern Recognition (cs.CV) |
| Cite as: | arXiv:2206.04916 [cs.CV] |
| (or arXiv:2206.04916v2 [cs.CV] for this version) | |
| https://doi.org/10.48550/arXiv.2206.04916 arXiv-issued DOI via DataCite |
Submission history
From: Yuchen Rao [view email]
[v1]
Fri, 10 Jun 2022 07:34:10 UTC (4,432 KB)
[v2]
Wed, 12 Oct 2022 11:50:45 UTC (5,193 KB)