Acta Geodaetica et Cartographica Sinica ›› 2019, Vol. 48 ›› Issue (3): 330-338.doi: 10.11947/j.AGCS.2019.20180005

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An road extraction method for remote sensing image based on Encoder-Decoder network

HE Hao1, WANG Shicheng1, YANG Dongfang1, WANG Shuyang2, LIU Xing1   

  1. 1. The Rocket Force University of Engineering, The Department of Control Engineering, Xi'an 710025, China;
    2. The Rocket Force University of Engineering, The Department of Information Engineering, Xi'an 710025, China
  • Received:2018-01-08 Revised:2018-11-15 Online:2019-03-20 Published:2019-04-10
  • Supported by:
    The National Nature Science Foundation of China (Nos. 61403398;61673017);The General Project of Shaanxi Nature Science Foundation (No. 2017JM6077)

Abstract: According to the characteristics of the road features, an Encoder-Decoder deep semantic segmentation network is designed for road extraction of remote sensing images. Firstly, as the features of the road target are rich in local details and simple in semantic features, an Encoder-Decoder network with shallow layers and high resolution is designed to improve the ability of representing detail information. Secondly, as the road area is small proportion in remote sensing images, the cross-entropy loss function is improved, which solves the imbalance between positive and negative samples in training process. Experiments on large road extraction dataset show that, the proposed method gets the recall rate 83.9%, precision 82.5% and F1-score 82.9%, which can extract the road targets in remote sensing images completely and accurately. The Encoder-Decoder network designed in this paper performs well in road extraction task and needs less artificial participation, so it has a good application prospect.

Key words: remote sensing, road extraction, deep learning, semantic segmentation, Encoder-Decoder network

CLC Number: