The research and implementation of light compensation algorithm in color facial image

In order to improve the face recognition rate under complex light conditions and address the phenomenon such as white and color distortion, low contrast, which might be produced while using retinex algorithm to process face images, this paper proposes a new and multi-scale retinex with color restoration algorithm for light compensation of color images. On the basis of studying of MSRCR theory, we introduce the fast Fourier algorithm into the original algorithm to make the speed faster than that of the traditional method. Experimental results prove that the contrasts, brightness, hidden details of images are enhanced by using the improved algorithm. This paper describes the principle and implementation method of the algorithm and at the same time compares it with histogram equalization, Gamma transform methods through experiments. Results of experiments show that good effects can be produced while using the algorithm for light compensation of color images.