Point Cloud Classification Using Content-Based Transformer via Clustering in Feature Space

doi:10.1109/JAS.2023.123432

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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
刊名	IEEE/CAA Journal of Automatica Sinica
	2024
卷号	11 期号:1 页码:231-239
关键词	Content-based Transformer deep learning feature aggregator local attention point cloud classification
ISSN号	2329-9266
DOI	10.1109/JAS.2023.123432
英文摘要	Recently, 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.
内容类型	期刊论文
源URL	[http://ir.ia.ac.cn/handle/173211/54506]
专题	自动化研究所_学术期刊_IEEE/CAA Journal of Automatica Sinica
推荐引用方式 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.