Abstract: The images collected in night with multiple relighting have color difference,and white balance deviation compensation method is used to realize image smoothing beautification processing and improve the image quality.The traditional method uses circular tracking pixel point feature extraction algorithm,and the color difference compensation effect is not good when the image has white balance deviation.A color differential image smoothing algorithm with multiple relighting was proposed based on white balance deviation compensation.Firstly,image feature extraction and adaptive equalization pre-processing are carried out,white balance color deviation compensation is taken for the image,image blind deconvolution algorithm is taken for image smoothing,and the similarity function of target feature model is used to determine the image color difference feature weigh.Along the gradient direction,the information of image edge is obtained,the feature clustering is used to classify the target space automatically,and the detail features of image are smoothed and beautified to a large extent.The simulation results show that the algorithm can compensate balance deviation,and the image smoothing beautification processing are optimized.It has good image smoothing performance,calculation overhead is less,the detail features smoothing effect of image is the best,and its performance is better than the traditional algorithm.

Key words: White balance,Deviation compensation,Image smoothing,Beautification processing