A nonlocal method for image shadow removal. (1st February 2022)

• Record Type: Journal Article
• Authors: Benalia, S.; Hachama, M.
• Is Part Of: Computers & mathematics with applications. Volume 107(2022)
• Page Start: 95
• Page End: 103
• Publication Date: 2022-02-01
• Subjects: Image restoration -- Shadows removal -- Nonlocal differential operators -- Energy minimization; Electronic data processing -- Periodicals; Mathematics -- Data processing -- Periodicals; 510.28541
• DOI: 10.1016/j.camwa.2021.12.023
• Languages: English
• ISSNs: 0898-1221

Abstract

Abstract: This paper proposes a new model for image shadow removal. The model reformulates a recent osmosis model with nonlocal differential operators. This allows to benefit from distant pixels similarities and thus improves restoration results. Some properties of this model are established and discussed, making it suitable for our application. Experimental results show that the nonlocal model obtained very good qualitative and quantitative results compared with state-of-the-art techniques.