Images captured by outdoor computer vision system degrade in bad weather(e.g.,fog,haze).A fast and effective haze image enhancement method based on Retinex is presented.The edge details of the haze image′s color channels are firstly enhanced by using the Laplacian operator.Then,based on Single-Scale Retinex,a new image enhancement fitting function of center self-adapt adjustment is presented,which enhance the image′s each color channels,increase contrast and reduce color shift of the image.Taking contrast,information entropy and arithmetic time into account,it is compared with Histogram Equalization and Multi-Scale Retinex.It proves that this method has the advantages.Experiment results show that this method can effectively remove the haze from the input images,enhance the contrast and keep the color information.