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SUN Le, XU Bin, LU Zhenyu. Hyperspectral Image Classification Based on A Multi-scale Weighted Kernel Network[J]. Chinese Journal of Electronics. doi: 10.1049/cje.2021.00.130
Citation: SUN Le, XU Bin, LU Zhenyu. Hyperspectral Image Classification Based on A Multi-scale Weighted Kernel Network[J]. Chinese Journal of Electronics. doi: 10.1049/cje.2021.00.130

Hyperspectral Image Classification Based on A Multi-scale Weighted Kernel Network

doi: 10.1049/cje.2021.00.130
Funds:  This work is supported by the National Natural Science Foundation of China (No.61971233, No.U20B2061)
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  • Author Bio:

    was born in Jiangsu, China, in 1987. He received the B.S. degree from the School of Science, Nanjing University of Science and Technology (NJUST), Nanjing, Jiangsu, China, in 2009, and the Ph.D. degree from the School of Computer Science and Engineering, NJUST, in 2014. From 2015 to 2018, he conducted research in the field of multiimages fusion based on sparse dictionary learning and compressive sensing as a Post-doctor at the School of Electronic and Electrical Engineering, Sungkyunkwan University, Korea. Since 2020, he has been an associate professor with the School of Computer and Science, Nanjing University of Information Science and Technology, Nanjing, China. His research interests include hyperspectral image processing (including unmixing, classification, restoration), sparse representation, compressive sensing, and deep learning.(Email: sunlecncom@163.com)

    was born in Jiangsu, China, in 1994. He received the M.S. degree from the School of Artificial Intelligence, Nanjing University of Information Science and Technology, Nanjing, China. His research interests include hyperspectral image classification, machine learning, and deep learning

    (corresponding author) was born in Guizhou, China, in 1976. He received the B.Sc. degree in electricity and the M.Sc. degree in information and communication from the Nanjing Institute of Meteorology, Nanjing, China, in 1999 and 2002, respectively, and the Ph.D. degree in optics engineering from the Nanjing University of Science and Technology, Nanjing, in 2008. He was a Research Associate with the Department of Mathematics and Statistics, University of Strathclyde, Glasgow, U.K., from 2012 to 2013. He is currently a full Professor with the School of AI, Nanjing University of Information Science and Technology. His current research interests include neural networks, stochastic control, and artificial intelligence

  • Received Date: 2021-04-14
  • Accepted Date: 2021-12-14
  • Available Online: 2021-12-28
  • Recently, many deep learning models have shown excellent performance in hyperspectral image classification. Among them, networks with multiple convolution kernels of different sizes have been proved to achieve richer receptive fields and extract more representative features than those with a single convolution kernel. However, in most networks, different-sized convolution kernels are usually used directly on multi-branch structures, and the image features extracted from them are fused directly and simply. In this paper, to fully and adaptively explore the multiscale information in both spectral and spatail domains of HSI, a novel multi-scale weighted kernel network (MSWKNet) based on an adaptive receptive field is proposed. First, the original HSI cubic patches are transformed to the input features by combining the principal component analysis and one-dimensional (1D) spectral convolution. Then, a three-branch network with different convolution kernels is designed to convolve the input features, and adaptively adjust the size of the receptive field through the attention mechanism of each branch. Finally, the features extracted from each branch are fused together for the task of classification. Experiments on three well-known hyperspectral data sets show that MSWKNet outperforms many deep learning networks in HSI classification.
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