说明：  可实现，实用，迭代法（新创新），基于改进的迭代法图像分割算法（源码）， 核心思想：先添加高斯噪声，然后新迭代分割算法，最后显示自动计算的阈值。
(Can realize, practical, the iterative method (new innovation), the iterative method based on improved image segmentation algorithm (source), core ideas: first add gaussian noise, then new iteration segmentation algorithmFinally，finally shows the threshold automatic calculation. )