Laser & Optoelectronics Progress, Volume. 60, Issue 12, 1210012(2023)

Hyperspectral Image Classification Based on Dual-Channel Feature Enhancement

Li Zhao1, Leiquan Wang1, Junsan Zhang1、*, Zhimin Shao2, and Jie Zhu3
Author Affiliations
  • 1College of Computer Science and Technology, China University of Petroleum (East China), Qingdao 266580, Shandong, China
  • 2State Grid Shandong Electric Power Company, Jinan 250003, Shandong, China
  • 3Department of Information Management, the National Police University for Criminal Justice, Baoding 071000, Hebei, China
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    A classification method of hyperspectral images based on dual channel feature enhancement (DCFE) is proposed to solve the problem of how to extract and use the spatial and spectral information of hyperspectral images more fully when the training samples are limited. First, two channels are designed to capture spectral and spatial features, and 3D convolution is used as a feature extractor in each channel. The feature map from the reduced-dimension spectral channel is fused with the feature map of the spatial channel. Finally, the feature map combining spectral and spatial features is input into the attention module, and feature enhancement is achieved by increasing attention to important information while decreasing interference from irrelevant information. The experimental results show that the proposed method has an overall classification accuracy of 96.57%, 98.15%, 98.95%, and 96.83% on four hyperspectral data sets, including Indian Pines (3% training sample), Pavia University (0.5% training sample), Salinas (0.5% training sample), and Botswana (1.2% training sample), respectively. When compared to the other five hyperspectral classification methods, the proposed method has remarkably improved the classification performance.

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    Li Zhao, Leiquan Wang, Junsan Zhang, Zhimin Shao, Jie Zhu. Hyperspectral Image Classification Based on Dual-Channel Feature Enhancement[J]. Laser & Optoelectronics Progress, 2023, 60(12): 1210012

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    Paper Information

    Category: Image Processing

    Received: May. 17, 2022

    Accepted: Jun. 16, 2022

    Published Online: Jun. 5, 2023

    The Author Email: Zhang Junsan (zhangjunsan@upc.edu.cn)

    DOI:10.3788/LOP221628

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