期刊
APPLIED MATHEMATICAL MODELLING
卷 66, 期 -, 页码 305-321出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.apm.2018.09.022
关键词
Retinex; Illumination; Reflection; Hyper-Laplacian; Alternating direction method of multipliers
资金
- National Science Foundation of China [61772003, 61876203]
- Fundamental Research Funds for the Central Universities [ZYGX2016J132]
- Science Strength Promotion Programme of UESTC
Retinex aims at estimating real reflectance images by removing the effect of illumination. We propose a nonconvex variational model for Retinex with novel priors for reflectance and illumination. Based on the statistics of the gradients of reflectance and illumination, we use the hyper-Laplacian prior to characterize the gradients of reflectance, and the hybrid hyper-Laplacian and Tikhonov prior to characterize the gradients of illumination. An efficient alternating direction method of multipliers (ADMM) is developed to solve the proposed model. Extensive numerical experiments show that the proposed method is comparable to the state-of-the-art methods quantitatively and qualitatively. (C) 2018 Elsevier Inc. All rights reserved.
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