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Full-Level Domain Adaptation for Building Extraction in Very-High-Resolution Optical Remote-Sensing Images

Peng, Daifeng, Guan, Haiyan, Zang, Yufu, Bruzzone, Lorenzo·2022·IEEE Transactions on Geoscience and Remote Sensing

Abstract

Convolutional neural networks (CNNs) have achieved tremendous success in computer vision tasks, such as building extraction. However, due to domain shift, the performance of the CNNs drops sharply on unseen data from another domain, leading to poor generalization. As it is costly and time-consuming to acquire dense annotations for remote-sensing (RS) images, developing algorithms that can transfer knowledge from a labeled source domain to an unlabeled target domain is of great significance. To this end, we propose a novel full-level domain adaptation network (FDANet) for building extraction by combining image-, feature-, and output-level information effectively. At the input level, a simple Wallis filter method is employed to transfer source images into target-like ones whereby alleviating radiometric discrepancy and achieving image-level alignment. To further reduce domain shift, adversarial learning is used to enforce feature distribution consistency constraints between the source and target images. In this way, feature-level alignment can be embedded effectively. At the output level, a mean-teacher model is introduced to enforce transformation-consistent constraint for the target output so that the regularization effect is enhanced and the uncertain predictions can be suppressed as much as possible. To further improve the performance, a novel self-training strategy is also employed by using pseudo labels. The effectiveness of the proposed FDANet is verified on three divers…

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Crossref · 10.1109/tgrs.2021.3093004

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  • Current pseudo-labeling approaches empirically choose a confidence threshold or set a fixed proportion for sample collection, which is hard to guarantee the accuracy of pseudo-labels assigned by the prediction model to its unknown domain.

    “The current approaches are empirically choosing a confidence threshold (Xu et al., 2020, Peng et al., 2021) or setting a fixed proportion for sample collection (Tong et al., 2020, Zhang et al., 2021a, Yan et al., 2019, Wang et al., 2022), which is hard to guarantee the accuracy of pseudo-labels assigned by the prediction model to its unknown domain.”

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Metadata

Authors
Peng, D., Guan, H., Zang, Y., & Bruzzone, L.
Venue
IEEE Transactions on Geoscience and Remote Sensing
Published
2022
Volume
60
Pages
1-17
ISSN
  • 0196-2892
  • 1558-0644
Cited by
33
References
1
Funders
  • National Natural Science Foundation of China (41801386, 41671454)
  • Natural Science Foundation of Jiangsu Province (BK20180797)
  • Startup Project for Introducing Talent of Nanjing University of Information Science and Technology (2018r029)
  • China Scholarship Council (201908320183)

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