Enhancing Low-Light Color Image via L0 Regularization and Reweighted Group Sparsity
Classic Retinex model based low-light image enhancement methods ignored the interference of noise, which causes annoying artifacts.In this paper, we propose to estimate the illumination, reflectance and suppress the noise in a whole framework.Instead of using the $L_{1}$ norm to constrain the piece-wise smoothness, we utilize the $L_{0}$ norm to pr