By calculating nonextensive Tsallis entropy of two dimensional histogram of image

one can obtain intensity information of long-range correlation within image as well as denoising.A novel two dimensional Tsallis entropy criterion is proposed

aiming at those images presenting local long-range correlations

such as infrared ones and nondestructive test ones

in which object and background can be considered as two independent parts and information integrity of them can be maximized reserved by the proposed method.Experimental results show that the proposed method is more sensitive to nonextensive parameter q than that considering global long-range correlation

therefore

local long-range correlation hypothesis can be described quantitatively.