Experimental results show that adopting this new method to search for the minimum can obtain the absolute minimum,and using the optimal value to segment the image can separate the object from the background and get the satisfactory results.

• 实验结果表明采用这种新方法来搜索谷值可以得到全局极小值；用于分割图像可以把目标从背景中分离出来；并取得了满意的结果.