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Point Cloud Classification Using Content-Based Transformer via Clustering in Feature Space
Yahui Liu; Bin Tian; Yisheng Lv; Lingxi Li; Fei-Yue Wang
Source PublicationIEEE/CAA Journal of Automatica Sinica
ISSN2329-9266
2024
Volume11Issue:1Pages:231-239
AbstractRecently, there have been some attempts of Transformer in 3D point cloud classification. In order to reduce computations, most existing methods focus on local spatial attention, but ignore their content and fail to establish relationships between distant but relevant points. To overcome the limitation of local spatial attention, we propose a point content-based Transformer architecture, called PointConT for short. It exploits the locality of points in the feature space (content-based), which clusters the sampled points with similar features into the same class and computes the self-attention within each class, thus enabling an effective trade-off between capturing long-range dependencies and computational complexity. We further introduce an inception feature aggregator for point cloud classification, which uses parallel structures to aggregate high-frequency and low-frequency information in each branch separately. Extensive experiments show that our PointConT model achieves a remarkable performance on point cloud shape classification. Especially, our method exhibits 90.3% Top-1 accuracy on the hardest setting of ScanObjectNN. Source code of this paper is available at https://github.com/yahuiliu99/PointConT.
KeywordContent-based Transformer deep learning feature aggregator local attention point cloud classification
DOI10.1109/JAS.2023.123432
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ia.ac.cn/handle/173211/54506
Collection学术期刊_IEEE/CAA Journal of Automatica Sinica
Recommended Citation
GB/T 7714
Yahui Liu,Bin Tian,Yisheng Lv,et al. Point Cloud Classification Using Content-Based Transformer via Clustering in Feature Space[J]. IEEE/CAA Journal of Automatica Sinica,2024,11(1):231-239.
APA Yahui Liu,Bin Tian,Yisheng Lv,Lingxi Li,&Fei-Yue Wang.(2024).Point Cloud Classification Using Content-Based Transformer via Clustering in Feature Space.IEEE/CAA Journal of Automatica Sinica,11(1),231-239.
MLA Yahui Liu,et al."Point Cloud Classification Using Content-Based Transformer via Clustering in Feature Space".IEEE/CAA Journal of Automatica Sinica 11.1(2024):231-239.
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