Abstract: To select the parameter α in decomposed 2D renyi entropy image thresholding segmentation method,a new adaptive method was proposed using particle swarm optimization algorithm,according to the uniformity measure which is an image segmentation evaluation criteria.The experiment results show that the method not only can get the suitable parameter α and desire segmentation result for each image,but also can reduce the computational complexity from O(L⁶) to O(L²),and the computational time of this method is only one-ten-thousandth of the computational time of 2D renyi entropy image thresholding segmentation method with adaptive selection parameter.

Key words: Image segmentation,Decomposition,Renyi entropy,Particle swarm optimization