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deep learning (DL), aerial image semantic segmentation based on deep neural networks (DNNs) has achieved remarkable success in recent years. Nevertheless, the security and robustness of DNNs deserve attention when dealing with safety-critical earth observation tasks. As a typical attack pattern in adversarial machine learning (AML), backdoor attacks intend to embed hidden triggers in DNNs by poisoning training data. The attacked DNNs behave normally on benign samples, but when the hidden trigger is activated, its prediction is modified to a specified target label. In this article, we systematically assess the threat of backdoor attacks to aerial image semantic segmentation tasks. To defend against backdoor attacks and maintain better semantic segmentation accuracy, we construct a novel robust generative adversarial network (RFGAN). Motivated by the sensitivity of human visual systems to global and edge information in images, RFGAN designs the robust global feature extractor (RobGF) and the robust edge feature extractor (RobEF) that force DNNs to learn global and edge features. Then, RFGAN uses robust global and edge features as guidance to obtain benign samples by the constructed generator, and the discriminator to obtain semantic segmentation results. Our method is the first attempt to address the backdoor threat to aerial image semantic segmentation by constructing the robust DNNs model architecture. Extensive experiments on real-world scenes aerial image benchmark datasets demonstrate that the constructed RFGAN can effectively defend against backdoor attacks and achieve better semantic segmentation results compared with the existing state-of-the-art methods.<\/jats:p>","DOI":"10.3390\/rs15102580","type":"journal-article","created":{"date-parts":[[2023,5,16]],"date-time":"2023-05-16T02:27:04Z","timestamp":1684204024000},"page":"2580","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":7,"title":["Robust Feature-Guided Generative Adversarial Network for Aerial Image Semantic Segmentation against Backdoor Attacks"],"prefix":"10.3390","volume":"15","author":[{"given":"Zhen","family":"Wang","sequence":"first","affiliation":[{"name":"School of Information and Navigation, Air Force Engineering University, FengHao East Road, Xi\u2019an 710082, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Buhong","family":"Wang","sequence":"additional","affiliation":[{"name":"School of Information and Navigation, Air Force Engineering University, FengHao East Road, Xi\u2019an 710082, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chuanlei","family":"Zhang","sequence":"additional","affiliation":[{"name":"School of Artificial Intelligence, Tianjin University of Science and Technology, Dagu South Road, Hexi District, Tianjin 300457, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3041-3557","authenticated-orcid":false,"given":"Yaohui","family":"Liu","sequence":"additional","affiliation":[{"name":"School of Surveying and Geo-Informatics, Shandong Jianzhu University, FengMing Road, LiCheng District, Jinan 250101, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jianxin","family":"Guo","sequence":"additional","affiliation":[{"name":"School of Electronic Information, Xijing University, XiJing Road, Chang\u2019an District, Xi\u2019an 710123, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2023,5,15]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Clabaut, \u00c9., Lemelin, M., Germain, M., Bouroubi, Y., and St-Pierre, T. 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