Laser & Optoelectronics Progress, Volume. 57, Issue 8, 081010(2020)
Hyperspectral Image Classification Based on Multiple Features and an Improved Autoencoder
In this study, we propose a hyperspectral image classification algorithm based on multiple features and the improved stacked sparse autoencoder network to solve the problems of insufficient feature utilization and less training samples. The low-dimensional data structures of the hyperspectral images can be obtained using manifold learning, and the local binary pattern (LBP) features with spatial information and extended multi-attribute profiles (EMAP) features can be extracted from the hyperspectral images. Further, Active learning is used to query and label highly characteristic unlabeled samples. Then, the samples fusing space spectrum joint information are used to train the stacked active sparse autoencoder neural network; these samples are subsequently classified using the Softmax classifier. The overall classification accuracy of the Indian pines dataset was 98.14%, whereas the overall classification accuracy of the Pavia U dataset was 97.24%. The experimental results prove that the proposed algorithm has a high classification accuracy and can appropriately classify the boundary points.
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Qian Zhang, Anguo Dong, Rui Song. Hyperspectral Image Classification Based on Multiple Features and an Improved Autoencoder[J]. Laser & Optoelectronics Progress, 2020, 57(8): 081010
Category: Image Processing
Received: Jul. 15, 2019
Accepted: Sep. 10, 2019
Published Online: Apr. 3, 2020
The Author Email: Zhang Qian (326585766@qq.com)