基于编码特征学习的3D点云语义分割网络

doi:10.16451/j.cnki.issn1003-6059.202304003

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Abstract Now point cloud semantic segmentation is widely applied in various fields such as autonomous driving and virtual reality. However, the current point cloud semantic segmentation algorithms cannot extract relatively complete spatial structure information, and the information for each point is difficult to explain. To address this deficiency, a 3D point cloud semantic segmentation network based on coding feature learning is proposed. Firstly, the local feature encoder is designed based on the introduction of angle information and the enhanced features to learn more complete local spatial structures and alleviate the problem of misclassification of similar objects. Secondly, mixed pooling polymerization module is designed to aggregate rough features and fine features while ensuring the sorting invariance of point cloud. Finally, the multi-scale feature fusion is adopted to fully utilize the different scale features in the encoding layer and achieve accurate semantic segmentation. The experiment on two large benchmark datasets, S3DIS and SemanticKITTI, demonstrates the superiority of the proposed network.

Key words： Point Cloud Semantic Segmentation Local Feature Encoder Mixed Pooling Multi-scale Fusion

Received: 10 February 2023

ZTFLH:

TP 391

Fund:National Key R&D Plan Project(No.2019YFB1309905,2020YFB1712802)

Corresponding Authors: TONG Guofeng, Ph.D., professor. His research interests include computer vision, 3D urban reconstruction and deep learning.

About author:: LIU Yongxu, master student. His research interests include computer vision, laser point cloud processing and deep learning.PENG Hao, Ph.D. candidate. His research interests include computer vision, laser point cloud processing and pattern recognition.SHAO Yuyuan, Ph.D. candidate. His research interests include computer vision, laser point cloud processing and pattern recognition.

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	TONG Guofeng
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Cite this article:

TONG Guofeng,LIU Yongxu,PENG Hao等. 3D Point Cloud Semantic Segmentation Network Based on Coding Feature Learning[J]. Pattern Recognition and Artificial Intelligence, 2023, 36(4): 313-326.

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http://manu46.magtech.com.cn/Jweb_prai/EN/10.16451/j.cnki.issn1003-6059.202304003 OR http://manu46.magtech.com.cn/Jweb_prai/EN/Y2023/V36/I4/313

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