很齐全的VC示例，根据书本例子编写。介绍了数学形态学中结构元素为4连通或8连通的3×3邻域时腐蚀、膨胀运算的快速算法。区域采用线段编码表示，腐蚀与膨胀运算在当前线段与其相邻的上下线段之间通过逻辑运算实现。 -In this paper, a fast algorithm of mathematical morphology erosion and dilation operation for 3×3 neighborhood structuring element with 4-connecti