期刊
REMOTE SENSING
卷 14, 期 7, 页码 -出版社
MDPI
DOI: 10.3390/rs14071563
关键词
3D point clouds; transformer; deep learning; point cloud classification; point cloud segmentation
类别
资金
- National Natural Science Foundation of China [62076070]
In this paper, a transformer-based network for point cloud learning is proposed, which effectively models global and local information and enhances the feature representation through radius-based density features. Extensive evaluation demonstrates the effectiveness and competitive performance of the proposed method in point cloud classification and part segmentation.
Deep point cloud neural networks have achieved promising performance in remote sensing applications, and the prevalence of Transformer in natural language processing and computer vision is in stark contrast to underexplored point-based methods. In this paper, we propose an effective transformer-based network for point cloud learning. To better learn global and local information, we propose a group-in-group relation-based transformer architecture to learn the relationships between point groups to model global information and between points within each group to model local semantic information. To further enhance the local feature representation, we propose a Radius Feature Abstraction (RFA) module to extract radius-based density features characterizing the sparsity of local point clouds. Extensive evaluation on public benchmark datasets demonstrate the effectiveness and competitive performance of our proposed method on point cloud classification and part segmentation.
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