FuNet: A Novel Road Extraction Network with Fusion of Location Data and Remote Sensing Imagery

ISPRS International Journal of Geo-Information

Fang Miao¹  Zhan Gao²  Kai Zhou²  Lei Zhang³  Yan Xie⁴ 

[1] Big Data Research Institute, Chengdu University, Chengdu 610106, China;College of Computer Science, Sichuan University, Chengdu 610065, China;Dacheng Juntu Technology Company Limited, Chengdu 610041, China;Sichuan Provincial Big Data Center, Chengdu 610041, China;

关键词: road extraction;    road connectivity;    remote sensing image;    location data;    data augmentation;    data post-processing;   

DOI  :  10.3390/ijgi10010039

来源: DOAJ

【 摘 要 】

Road semantic segmentation is unique and difficult. Road extraction from remote sensing imagery often produce fragmented road segments leading to road network disconnection due to the occlusion of trees, buildings, shadows, cloud, etc. In this paper, we propose a novel fusion network (FuNet) with fusion of remote sensing imagery and location data, which plays an important role of location data in road connectivity reasoning. A universal iteration reinforcement (IteR) module is embedded into FuNet to enhance the ability of network learning. We designed the IteR formula to repeatedly integrate original information and prediction information and designed the reinforcement loss function to control the accuracy of road prediction output. Another contribution of this paper is the use of histogram equalization data pre-processing to enhance image contrast and improve the accuracy by nearly 1%. We take the excellent D-LinkNet as the backbone network, designing experiments based on the open dataset. The experiment result shows that our method improves over the compared advanced road extraction methods, which not only increases the accuracy of road extraction, but also improves the road topological connectivity.

【 授权许可】

Unknown