Laser & Optoelectronics Progress, Volume. 60, Issue 16, 1628004(2023)
Road Extraction from Remote Sensing Image Based on an Improved U-Net
Road information extracted from remote sensing images is of great value in urban planning, traffic management, and other fields. However, owing to the complex background, obstacles, and numerous similar nonroad areas, high-quality road information extraction from remote sensing images is still challenging. In this work, we propose HSA-UNet, a road information extraction method based on mixed-scale attention and U-Net, for high-quality remote sensing images. First, an attention residual learning unit, composed of a residual structure and an attention feature fusion mechanism, is used in the coding network to improve the extraction ability of global and local features. Second, owing to roads with the characteristics of large spans, narrowness, and continuous distribution, the attention-enhanced atrous spatial pyramid pooling module is added to the bridge network to enhance the ability of road features extraction at different scales. Experiments were performed on Massachusetts roads dataset, and the results showed that HSA-UNet significantly outperformed D-LinkNet, DeepLabV3+, and other semantic segmentation networks in terms of F1, intersection over union, and other evaluation indicators.
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Zhe He, Yuxiang Tao, Xiaobo Luo, Hao Xu. Road Extraction from Remote Sensing Image Based on an Improved U-Net[J]. Laser & Optoelectronics Progress, 2023, 60(16): 1628004
Category: Remote Sensing and Sensors
Received: Sep. 26, 2022
Accepted: Nov. 24, 2022
Published Online: Aug. 18, 2023
The Author Email: Tao Yuxiang (taoyx@cqupt.edu.cn)