Laser & Optoelectronics Progress, Volume. 60, Issue 14, 1415003(2023)

Point Cloud Classification Method Based on Graph Convolution and Multilayer Feature Fusion

Sheng Tian* and Anyang Long
Author Affiliations
  • School of Civil and Transportation, South China University of Technology, Guangzhou 510641, Guangdong, China
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    A point cloud classification method based on graph convolution and multilayer feature fusion is proposed to solve the problem that the existing deep learning point cloud classification methods are insufficient for local feature mining and to improve the quality of feature fusion at different levels. First, the K-neighborhood graph is constructed, the improved edge function is used to extract more fine-grained edge features, and the aggregation method based on attention mechanism is used to obtain more representative local features. Next, the multilayer feature fusion module adjusts the channel weight of the intermediate features, introduces residual connection to fuse the features of different levels, and deepens the information transmission between the network layers. The experimental results using the standard public dataset ModelNet40 show that the proposed method exhibits better classification performance than other point cloud classification methods. The proposed method is robust and has an overall classification accuracy of 93.2%.

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    Sheng Tian, Anyang Long. Point Cloud Classification Method Based on Graph Convolution and Multilayer Feature Fusion[J]. Laser & Optoelectronics Progress, 2023, 60(14): 1415003

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    Paper Information

    Category: Machine Vision

    Received: Jun. 28, 2022

    Accepted: Aug. 29, 2022

    Published Online: Jul. 25, 2023

    The Author Email: Tian Sheng (shitianl@scut.edu.cn)

    DOI:10.3788/LOP221933

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