this method first decomposes the skeleton into its meaningful component ( such as branch and loop ) set, then vectorizes each components to simple structure elements ( such as straight line segments and circles ) and finally arrange them into an attributed relation graph 該算法首先將骨架分解為它的有意義分量(如分支和環(huán))集,然后將各分量矢量化為簡單的結(jié)構(gòu)基元(如直線段和圓),最后將它們組織到一個屬性關系圖之中。