Semantic labeling of high-resolution aerial images using an ensemble of fully convolutional networks

Xiaofeng Sun; Shuhan Shen; Xiangguo Lin; Zhanyi Hu

doi:10.1117/1.JRS.11.042617

5 December 2017 Semantic labeling of high-resolution aerial images using an ensemble of fully convolutional networks

Xiaofeng Sun, Shuhan Shen, Xiangguo Lin, Zhanyi Hu

Author Affiliations +

Journal of Applied Remote Sensing, Vol. 11, Issue 4, 042617 (December 2017). https://doi.org/10.1117/1.JRS.11.042617

Abstract

High-resolution remote sensing data classification has been a challenging and promising research topic in the community of remote sensing. In recent years, with the rapid advances of deep learning, remarkable progress has been made in this field, which facilitates a transition from hand-crafted features designing to an automatic end-to-end learning. A deep fully convolutional networks (FCNs) based ensemble learning method is proposed to label the high-resolution aerial images. To fully tap the potentials of FCNs, both the Visual Geometry Group network and a deeper residual network, ResNet, are employed. Furthermore, to enlarge training samples with diversity and gain better generalization, in addition to the commonly used data augmentation methods (e.g., rotation, multiscale, and aspect ratio) in the literature, aerial images from other datasets are also collected for cross-scene learning. Finally, we combine these learned models to form an effective FCN ensemble and refine the results using a fully connected conditional random field graph model. Experiments on the ISPRS 2-D Semantic Labeling Contest dataset show that our proposed end-to-end classification method achieves an overall accuracy of 90.7%, a state-of-the-art in the field.

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Xiaofeng Sun, Shuhan Shen, Xiangguo Lin, and Zhanyi Hu "Semantic labeling of high-resolution aerial images using an ensemble of fully convolutional networks," Journal of Applied Remote Sensing 11(4), 042617 (5 December 2017). https://doi.org/10.1117/1.JRS.11.042617

Received: 20 March 2017; Accepted: 10 November 2017; Published: 5 December 2017

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