{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,31]],"date-time":"2026-03-31T13:50:25Z","timestamp":1774965025781,"version":"3.50.1"},"reference-count":64,"publisher":"MDPI AG","issue":"7","license":[{"start":{"date-parts":[[2024,3,29]],"date-time":"2024-03-29T00:00:00Z","timestamp":1711670400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"National Natural Science Founation of China","award":["U23B2006"],"award-info":[{"award-number":["U23B2006"]}]},{"name":"National Natural Science Founation of China","award":["BZ2023046"],"award-info":[{"award-number":["BZ2023046"]}]},{"name":"National Natural Science Founation of China","award":["BE2022065-2"],"award-info":[{"award-number":["BE2022065-2"]}]},{"name":"National Natural Science Founation of China","award":["62071233"],"award-info":[{"award-number":["62071233"]}]},{"name":"National Natural Science Founation of China","award":["BK20211570"],"award-info":[{"award-number":["BK20211570"]}]},{"name":"Jiangsu Provincial Innovation Support Program","award":["U23B2006"],"award-info":[{"award-number":["U23B2006"]}]},{"name":"Jiangsu Provincial Innovation Support Program","award":["BZ2023046"],"award-info":[{"award-number":["BZ2023046"]}]},{"name":"Jiangsu Provincial Innovation Support Program","award":["BE2022065-2"],"award-info":[{"award-number":["BE2022065-2"]}]},{"name":"Jiangsu Provincial Innovation Support Program","award":["62071233"],"award-info":[{"award-number":["62071233"]}]},{"name":"Jiangsu Provincial Innovation Support Program","award":["BK20211570"],"award-info":[{"award-number":["BK20211570"]}]},{"name":"Jiangsu Provincial Key Research and Development Program","award":["U23B2006"],"award-info":[{"award-number":["U23B2006"]}]},{"name":"Jiangsu Provincial Key Research and Development Program","award":["BZ2023046"],"award-info":[{"award-number":["BZ2023046"]}]},{"name":"Jiangsu Provincial Key Research and Development Program","award":["BE2022065-2"],"award-info":[{"award-number":["BE2022065-2"]}]},{"name":"Jiangsu Provincial Key Research and Development Program","award":["62071233"],"award-info":[{"award-number":["62071233"]}]},{"name":"Jiangsu Provincial Key Research and Development Program","award":["BK20211570"],"award-info":[{"award-number":["BK20211570"]}]},{"name":"National Natural Science Founation of China","award":["U23B2006"],"award-info":[{"award-number":["U23B2006"]}]},{"name":"National Natural Science Founation of China","award":["BZ2023046"],"award-info":[{"award-number":["BZ2023046"]}]},{"name":"National Natural Science Founation of China","award":["BE2022065-2"],"award-info":[{"award-number":["BE2022065-2"]}]},{"name":"National Natural Science Founation of China","award":["62071233"],"award-info":[{"award-number":["62071233"]}]},{"name":"National Natural Science Founation of China","award":["BK20211570"],"award-info":[{"award-number":["BK20211570"]}]},{"name":"Jiangsu Provincial Natural Science Foundation of China","award":["U23B2006"],"award-info":[{"award-number":["U23B2006"]}]},{"name":"Jiangsu Provincial Natural Science Foundation of China","award":["BZ2023046"],"award-info":[{"award-number":["BZ2023046"]}]},{"name":"Jiangsu Provincial Natural Science Foundation of China","award":["BE2022065-2"],"award-info":[{"award-number":["BE2022065-2"]}]},{"name":"Jiangsu Provincial Natural Science Foundation of China","award":["62071233"],"award-info":[{"award-number":["62071233"]}]},{"name":"Jiangsu Provincial Natural Science Foundation of China","award":["BK20211570"],"award-info":[{"award-number":["BK20211570"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>Weakly supervised object detection (WSOD) aims to predict a set of bounding boxes and corresponding category labels for instances with only image-level supervisions. Compared with fully supervised object detection, WSOD in remote sensing images (RSIs) is much more challenging due to the vast foreground-related context regions. In this paper, we propose a progressive image-level and instance-level feature refinement network to address the problems of missing detection and part domination for WSOD in RSIs. Firstly, we propose a multi-label attention mining loss (MAML)-guided image-level feature refinement branch to effectively allocate the computational resources towards the most informative part of images. With the supervision of MAML, all latent instances in images are emphasized. However, image-level feature refinement further expands responsive gaps between the informative part and other sub-optimal informative ones, which results in exacerbating the problem of part domination. In order to alleviate the above-mentioned limitation, we further construct an instance-level feature refinement branch to re-balance the contributions of different adjacent candidate bounding boxes according to the detection task. An instance selection loss (ISL) is proposed to progressively boost the representation of salient regions by exploring supervision from the network itself. Finally, we integrate the image-level and instance-level feature refinement branches into a complete network and the proposed MAML and ISL functions are merged with class classification and box regression to optimize the whole WSOD network in an end-to-end training fashion. We conduct experiments on two popular WSOD datasets, NWPU VHR-10.v2 and DIOR. All the experimental results demonstrate that our method achieves a competitive performance compared with other state-of-the-art approaches.<\/jats:p>","DOI":"10.3390\/rs16071203","type":"journal-article","created":{"date-parts":[[2024,3,29]],"date-time":"2024-03-29T06:33:16Z","timestamp":1711693996000},"page":"1203","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":12,"title":["Weakly Supervised Object Detection for Remote Sensing Images via Progressive Image-Level and Instance-Level Feature Refinement"],"prefix":"10.3390","volume":"16","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7444-3459","authenticated-orcid":false,"given":"Shangdong","family":"Zheng","sequence":"first","affiliation":[{"name":"School of Computer Science, Nanjing University of Posts and Telecommunications, Nanjing 210023, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7162-0202","authenticated-orcid":false,"given":"Zebin","family":"Wu","sequence":"additional","affiliation":[{"name":"School of Computer Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5499-3728","authenticated-orcid":false,"given":"Yang","family":"Xu","sequence":"additional","affiliation":[{"name":"School of Computer Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4841-6051","authenticated-orcid":false,"given":"Zhihui","family":"Wei","sequence":"additional","affiliation":[{"name":"School of Computer Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China"}]}],"member":"1968","published-online":{"date-parts":[[2024,3,29]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"5013","DOI":"10.1109\/JSTARS.2023.3277588","article-title":"Object-Centric Masked Image Modeling-Based Self-Supervised Pretraining for Remote Sensing Object Detection","volume":"16","author":"Zhang","year":"2023","journal-title":"IEEE J. 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