说明：  本函数的处理结果是将生长后的区域表示为黑色像素，未生长区域表示为白色像素。 区域生长一般包含三个比较重要的问题： 1. 种子点的选取 2. 生长准则 3. 终止条件 可以认为，这三个问题需要具体分析，而且每个问题解决的好坏直接关系到 区域生长的结果。
(this function is the outcome of the Regional Growth said black pixels, not growth for the region said a white pixel. Regional growth typically includes three more important questions : 1. Seed selection two points. Growth criteria 3. termination conditions can believe that this issue needs three specific analysis, Each issue is resolved will have a direct bearing on the outcome of regional growth.)