A new image quality assessment criterion is suggested on the basis of the statistical features of the gray - level histogram of images to control the iterative procedure of the proposed image enhancement algorithm 同時為了結(jié)束迭代增強,基于圖像灰度直方圖分布的統(tǒng)計特性,提出了一種客觀的圖像質(zhì)量評價指標。