Fast recursive algorithm for two-dimensional Tsallis entropy thresholding method

Recently,a two-dimensional(2-D)Tsallis entropy thresholding method has been proposed as a new method for image segmentation.But the computation complexity of 2-D Tsallis entropy is very large and becomes an obstacle to real time image processing systems.A fast recursive algorithm for 2-D Tsallis entropy thresholding is proposed.The key variables involved in calculating 2-D Tsallis entropy are written in recursive form.Thus,many repeating calculations are avoided and the computation complexity reduces to O(L~2)from O(L~4).The effectiveness of the proposed algorithm is illustrated by experimental results.