Journal of Geodesy and Geoinformation Science ›› 2020, Vol. 3 ›› Issue (2): 16-25.doi: 10.11947/j.JGGS.2020.0202

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A Road Extraction Method for Remote Sensing Image Based on Encoder-Decoder Network

Hao HE1,Shuyang WANG2,Shicheng WANG1(),Dongfang YANG1,Xing LIU1   

  1. 1. The Rocker Force University of Engineering, The Department of Control Engineering, Xi’an 710025, China
    2. The Rocker Force University of Engineering, The Department of Information Engineering, Xi’an 710025, China
  • Received:2019-07-25 Accepted:2020-01-25 Online:2020-06-20 Published:2020-07-08
  • Contact: Shicheng WANG E-mail:yelvlanshu@163.com
  • About author:Hao HE(1991—), male, PhD candidate, majors in deep learning and computer vision filed.E?mail: hehao209@126.com
  • Supported by:
    National Natural Science Foundation of China(61673017);National Natural Science Foundation of China(61403398);Natural Science Foundation of Shaanxi Province(2017JM6077);Natural Science Foundation of Shaanxi Province(2018ZDXM-GY-039)

Abstract:

According to the characteristics of the road features, an Encoder-Decoder deep semantic segmentation network is designed for the 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 to represent detail information. Secondly, as the road area is a small proportion in remote sensing images, the cross-entropy loss function is improved, which solves the imbalance between positive and negative samples in the training process. Experiments on large road extraction datasets 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 the 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