An adaptive weight value-based multi-scale retinex algorithm for color image enhancement

There are limited dynamic range problems when real world scenes are captured from a digital camera and displayed on monitors.Retinex is one of the most popular theories for dynamic range compression, color constancy and color rendition.However, there still exist some problems, such as hue shift and excessive noise, especially for those images including large bright areas and dark regions.In order to solve these problems,an adaptive weight value-based multi-scale retinex algorithm is proposed in this paper. Compared to other methods, visual experiments and data evaluation show that the proposed algorithms can achieve better performance for color image enhancement and noise suppression simultaneously. What is more, there is no need for color correction phase in the proposed algorithm, which makes it more efficient and convenient to apply.