This paper addresses the problem of regional color transfer from source image to object image based on Gaussian mixture model(GMM). Instead of choosing RGB color space

images are processed in lαβcolor space

which minimizes correlation between the channels. Authors firstpick up color information of the source image to construct a reference color model by adopting GMM

then classify the color samples in object image according to the model and determine the color match between object image and source image. At last

new color transfer formulas are proposed for regional color transfer. Experimental results demonstrate that the proposed algorithm works very well not only on transferring color between two color images but also on colorizing gray image by color transfer from a color image.