Deep convolutional recurrent neural network with transfer learning for hyperspectral image classification

Bing Liu; Xuchu Yu; Anzhu Yu; Gang Wan

doi:10.1117/1.JRS.12.026028

11 June 2018 Deep convolutional recurrent neural network with transfer learning for hyperspectral image classification

Bing Liu, Xuchu Yu, Anzhu Yu, Gang Wan

Author Affiliations +

Journal of Applied Remote Sensing, Vol. 12, Issue 2, 026028 (June 2018). https://doi.org/10.1117/1.JRS.12.026028

Abstract

The deep learning methods have recently been successfully explored for hyperspectral image classification. However, it may not perform well when training samples are scarce. A deep transfer learning method is proposed to improve the hyperspectral image classification performance in the situation of limited training samples. First, a Siamese network composed of two convolutional neural networks is designed for local image descriptors extraction. Subsequently, the pretrained Siamese network model is reused to transfer knowledge to the hyperspectral image classification tasks by feeding deep features extracted from each band into a recurrent neural network. Indeed, a deep convolutional recurrent neural network is constructed for hyperspectral image classification by this way. Finally, the entire network is tuned by a small number of labeled samples. The important characteristic of the designed model is that the deep convolutional recurrent neural network provides a way of utilizing the spatial–spectral features without dimension reduction. Furthermore, the transfer learning method provides an opportunity to train such deep model with limited labeled samples. Experiments on three widely used hyperspectral datasets demonstrate that the proposed transfer learning method can improve the classification performance and competitive classification results can be achieved when compared with state-of-the-art methods.

Citation Download Citation

Bing Liu, Xuchu Yu, Anzhu Yu, and Gang Wan "Deep convolutional recurrent neural network with transfer learning for hyperspectral image classification," Journal of Applied Remote Sensing 12(2), 026028 (11 June 2018). https://doi.org/10.1117/1.JRS.12.026028

Received: 9 March 2018; Accepted: 23 May 2018; Published: 11 June 2018

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