于八方向链码的边界跟踪代码，其中数组存储的是边界点的矢量方向，存储的是边界点的坐标。-in eight directions chain code border tracking code, which is stored in an array of border points vector direction, Storage is the boundary point coordinates.

于八方向链码的边界跟踪代码，其中数组存储的是边界点的矢量方向，存储的是边界点的坐标。-in eight directions chain code border tracking code, which is stored in an array of border points vector direction, Storage is the boundary point coordinates.