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arXiv · 2007.13083

MACU-Net for Semantic Segmentation of Fine-Resolution Remotely Sensed Images

Rui Li·Chenxi Duan·Shunyi Zheng·Ce Zhang·Peter M. Atkinson
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Abstract

Semantic segmentation of remotely sensed images plays an important role in land resource management, yield estimation, and economic assessment. U-Net, a deep encoder-decoder architecture, has been used frequently for image segmentation with high accuracy. In this Letter, we incorporate multi-scale features generated by different layers of U-Net and design a multi-scale skip connected and asymmetric-convolution-based U-Net (MACU-Net), for segmentation using fine-resolution remotely sensed images. Our design has the following advantages: (1) The multi-scale skip connections combine and realign semantic features contained in both low-level and high-level feature maps; (2) the asymmetric convolution block strengthens the feature representation and feature extraction capability of a standard convolution layer. Experiments conducted on two remotely sensed datasets captured by different satellite sensors demonstrate that the proposed MACU-Net transcends the U-Net, U-NetPPL, U-Net 3+, amongst other benchmark approaches. Code is available at https://github.com/lironui/MACU-Net.

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Rui Li, Chenxi Duan, Shunyi Zheng, Ce Zhang, Peter M. Atkinson. 2020-07-26. MACU-Net for Semantic Segmentation of Fine-Resolution Remotely Sensed Images. https://doi.org/10.1109/lgrs.2021.3052886

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