说明：  局部迭代规格化程序，规格化能使图像中的显著区域变得更加显著，不显著区域收到更强的抑制，这样就有效抑制了背景和噪声
(Iterative partial standardized procedures, standardized images can significantly more significant region, no significant inhibition of the region received more, so that the effective suppression of background and noise)