Laser & Optoelectronics Progress, Volume. 59, Issue 16, 1611005(2022)
Hyperspectral Image Classification Based on Edge-Preserving Filter and Deep Residual Network
Herein, we proposed a hyperspectral image classification method using an edge-preserving filter and deep residual network due to the characteristics of the strong correlation between hyperspectral image bands, high complexity of spectral and spatial structures, and a limited number of training samples. First, we applied joint bilateral filtering to enhance the edge structure of ground objects and extract high-quality spatial features. The extracted spatial features were fused with spectral features to obtain the spatial-spectral features. Furthermore, we constructed a two-dimensional convolutional neural network and improved the model to a deep residual network model by adding a hop layer connection in the convolutional layer. Then, the model was used to extract the deep spatial-spectral features and input them to the Softmax classifier. We compare the experiment with related state-of-the-art methods on two datasets, and the results show that the proposed method alleviates the overfitting phenomenon in the convolutional neural network classification and considers the important role of the edge structure of ground objects, which significantly improves the classification accuracy of the hyperspectral images.
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Lü Huanhuan, Zhuolu Wang, Hui Zhang. Hyperspectral Image Classification Based on Edge-Preserving Filter and Deep Residual Network[J]. Laser & Optoelectronics Progress, 2022, 59(16): 1611005
Category: Imaging Systems
Received: Jul. 18, 2021
Accepted: Aug. 23, 2021
Published Online: Jul. 22, 2022
The Author Email: Zhang Hui (wangzl2019@126.com)