Complete point clouds using intra- and inter-level cross-resolution aggregation with CRA-PCN
Complete point clouds using intra- and inter-level cross-resolution aggregation with CRA-PCN
CRA-PCN: Point Cloud Completion with Intra- and Inter-level Cross-Resolution Transformers
arXiv paper abstract https://arxiv.org/abs/2401.01552
arXiv PDF paper https://arxiv.org/pdf/2401.01552.pdf
Point cloud completion is an indispensable task ... due to incompleteness caused by occlusion, limited sensor resolution, etc. ... one of the key ... feature extraction operations with explicit cross-resolution aggregation.
... present Cross-Resolution Transformer that efficiently performs cross-resolution aggregation with local attention mechanisms.
With the help of ... recursive designs, the proposed operation can capture more scales of features than common aggregation operations, which is beneficial for capturing fine geometric characteristics.
... Cross-Resolution Transformer can perform intra- or inter-level cross-resolution aggregation by switching inputs.
... integrate two forms of Cross-Resolution Transformers into one up-sampling block for point generation, and following the coarse-to-fine manner, ... construct CRA-PCN to incrementally predict complete shapes with stacked up-sampling blocks.
... method outperforms state-of-the-art methods by a large margin on several widely used benchmarks ...
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