By modeling orthogonal bandelets coefficients in each quad-tree subsquare as Generalized Gaussian Distribution model,a calculation formula for adaptive local subsquarewise threshold is derived under the Bayesian frame,and the best range of the parameter needed to calculate subsquarewise threshold is found out.On these basis,a subsquarewise threshold denoising algorithm for natural images is proposed in bandelets domain.Owing to making full use of local statistic information of the image,the visual effect an...