1. 提取被分割图像所在的小的区域块。 2. 对小区域中的图像进行边缘提取 3. 用膨胀腐蚀算法对图像进行分割 -1. Extract divided image area where the small block. 2. For residential domain image edge detection 3. With the expansion of corrosion of the image segmentation algorithm