Studying fidelity issues in image enhancement by means of multi-scale retinex with color restoration
Xiangqian He, Tichun Wang, Yuanyuan Jia, Ying Wang, Zhengxiang Xie, Dan-mei Xie · 2016
One of the crucial issue in image quality enhancement is the fidelity issue. There are three fidelity issues to must be studied. The 1stfidelity issue can be called that the information entropy of the enhanced image can not be increase. The 2ndfidelity issue can be called that the constituents of the enhanced image can not be increased. The 3rdfidelity issue can be called that the color relation of the enhanced image can not be changed. MSRCR will be used as an example of an image enhancement method based on the retinex series method. As an example, the three fidelity brought by multi-scale retinex with color restoration (MSRCR), which is one of series methods based on retinex, will be studied in this paper. The study will point out that the MSRCR will result in the three obvious distortions above mentioned.