{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,10]],"date-time":"2025-10-10T01:33:22Z","timestamp":1760060002492,"version":"build-2065373602"},"reference-count":31,"publisher":"MDPI AG","issue":"8","license":[{"start":{"date-parts":[[2025,7,26]],"date-time":"2025-07-26T00:00:00Z","timestamp":1753488000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Science and Technology Plan Project of Nantong","award":["JC2023023","MS2024016","MSZ2024122","2023B1212060076","62102318","CP2021001","879002","879005","2023XK(B)06"],"award-info":[{"award-number":["JC2023023","MS2024016","MSZ2024122","2023B1212060076","62102318","CP2021001","879002","879005","2023XK(B)06"]}]},{"name":"Social Livelihood Science and Technology Plan of Nantong City","award":["JC2023023","MS2024016","MSZ2024122","2023B1212060076","62102318","CP2021001","879002","879005","2023XK(B)06"],"award-info":[{"award-number":["JC2023023","MS2024016","MSZ2024122","2023B1212060076","62102318","CP2021001","879002","879005","2023XK(B)06"]}]},{"name":"the Project of Guangdong Provincial Key Laboratory of Intelligent Information Processing","award":["JC2023023","MS2024016","MSZ2024122","2023B1212060076","62102318","CP2021001","879002","879005","2023XK(B)06"],"award-info":[{"award-number":["JC2023023","MS2024016","MSZ2024122","2023B1212060076","62102318","CP2021001","879002","879005","2023XK(B)06"]}]},{"name":"National Natural Science Foundation of China, Youth Fund","award":["JC2023023","MS2024016","MSZ2024122","2023B1212060076","62102318","CP2021001","879002","879005","2023XK(B)06"],"award-info":[{"award-number":["JC2023023","MS2024016","MSZ2024122","2023B1212060076","62102318","CP2021001","879002","879005","2023XK(B)06"]}]},{"name":"the Nantong Key Laboratory of Virtual Reality and Cloud Computing","award":["JC2023023","MS2024016","MSZ2024122","2023B1212060076","62102318","CP2021001","879002","879005","2023XK(B)06"],"award-info":[{"award-number":["JC2023023","MS2024016","MSZ2024122","2023B1212060076","62102318","CP2021001","879002","879005","2023XK(B)06"]}]},{"name":"the Electronic Information Master\u2019s project of Nantong Institute of Technology","award":["JC2023023","MS2024016","MSZ2024122","2023B1212060076","62102318","CP2021001","879002","879005","2023XK(B)06"],"award-info":[{"award-number":["JC2023023","MS2024016","MSZ2024122","2023B1212060076","62102318","CP2021001","879002","879005","2023XK(B)06"]}]},{"name":"the Software Engineering Key Discipline Construction project of Nantong Institute of Technology","award":["JC2023023","MS2024016","MSZ2024122","2023B1212060076","62102318","CP2021001","879002","879005","2023XK(B)06"],"award-info":[{"award-number":["JC2023023","MS2024016","MSZ2024122","2023B1212060076","62102318","CP2021001","879002","879005","2023XK(B)06"]}]},{"name":"he Phd project in Nantong Institute of Technology","award":["JC2023023","MS2024016","MSZ2024122","2023B1212060076","62102318","CP2021001","879002","879005","2023XK(B)06"],"award-info":[{"award-number":["JC2023023","MS2024016","MSZ2024122","2023B1212060076","62102318","CP2021001","879002","879005","2023XK(B)06"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Algorithms"],"abstract":"<jats:p>Due to diverse lighting conditions and photo environments, shadows are almost ubiquitous in images, especially document images captured with mobile devices. Shadows not only seriously affect the visual quality and readability of a document but also significantly hinder image processing. Although shadow removal research has achieved good results in natural scenes, specific studies on document images are lacking. To effectively remove shadows in document images, the dark illumination correction network is proposed, which mainly consists of two modules: shadow detection and illumination correction. First, a simplified shadow-corrected attention block is designed to combine spatial and channel attention, which is used to extract the features, detect the shadow mask, and correct the illumination. Then, the shadow detection block detects shadow intensity and outputs a soft shadow mask to determine the probability of each pixel belonging to shadow. Lastly, the illumination correction block corrects dark illumination with a soft shadow mask and outputs a shadow-free document image. Our experiments on five datasets show that the proposed method achieved state-of-the-art results, proving the effectiveness of illumination correction.<\/jats:p>","DOI":"10.3390\/a18080468","type":"journal-article","created":{"date-parts":[[2025,7,28]],"date-time":"2025-07-28T09:53:02Z","timestamp":1753696382000},"page":"468","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Document Image Shadow Removal Based on Illumination Correction Method"],"prefix":"10.3390","volume":"18","author":[{"given":"Depeng","family":"Gao","sequence":"first","affiliation":[{"name":"School of Yonyou Digital and Intelligence, Nantong Institute of Technology, Nantong 226000, China"}]},{"given":"Wenjie","family":"Liu","sequence":"additional","affiliation":[{"name":"School of Software, Northwestern Polytechnical University, Xi\u2019an 710000, China"}]},{"given":"Shuxi","family":"Chen","sequence":"additional","affiliation":[{"name":"School of Yonyou Digital and Intelligence, Nantong Institute of Technology, Nantong 226000, China"}]},{"given":"Jianlin","family":"Qiu","sequence":"additional","affiliation":[{"name":"School of Yonyou Digital and Intelligence, Nantong Institute of Technology, Nantong 226000, China"}]},{"given":"Xiangxiang","family":"Mei","sequence":"additional","affiliation":[{"name":"School of Yonyou Digital and Intelligence, Nantong Institute of Technology, Nantong 226000, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2603-8328","authenticated-orcid":false,"given":"Bingshu","family":"Wang","sequence":"additional","affiliation":[{"name":"School of Software, Northwestern Polytechnical University, Xi\u2019an 710000, China"},{"name":"Guangdong Provincial Key Laboratory of Intelligent Information Processing, Shenzhen University, Shenzhen 518000, China"},{"name":"Shenzhen Key Laboratory of Media Security, Shenzhen University, Shenzhen 518000, China"}]}],"member":"1968","published-online":{"date-parts":[[2025,7,26]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"2319","DOI":"10.1109\/TAI.2023.3321257","article-title":"Appearance enhancement for camera-captured document images in the wild","volume":"5","author":"Zhang","year":"2023","journal-title":"IEEE Trans. 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