In the end , this paper has proposed several points about the application of land price dynamic monitoring system in renewal of urban land basic standard price as follows : change of urban land basic standard price expression , establishment of the land price dynamic monitoring system , quantity choice of the land monitoring plots . this paper has discussed these in order to perfect conditions of the renewal of land price dynamic monitoring system in urban land basic standard price as a genuine sustainable way for renewal 本文在最后针对地价动态监测在城镇基准地价中的应用提出了几点说明和建议，包括基准地价表达方式的改变、地价动态监测体系的建立、地价监测点数量的选取等问题，旨在完善地价动态监测手段更新城镇基准地价的环境与条件，使其成熟应用于基准地价更新中，成为一种真正可持续更新的方法。
The prominent features of this algorithm are as follows : correctly dealing with cross and corner by adopting junction recovery process which adjusts the length of tracking step according to the demand ; compressing the amount of data , editing image and drawing new graph more easily by extracting coordinates of the center , radius , start point and end point of circle , avoiding the gap of circular arc ; ensuring the critical points in the image as less as possible . the results show this vectorization algorithm can make good vector images 该算法在处理拐角、交叉区域时，运用了矫正处理流程，通过调整步长以产生正确的矢量；在处理圆和圆弧时，用圆心、半径、圆弧的起点和终点表示，大大减少了图元占用的存储空间，使得对图形的进一步处理更容易，效果更好，同时也解决了圆弧断裂的问题；在提取关键点的过程中，保证了整个图像中尽可能少的关键点数量。
The 00 ( object - oriented ) technique of standard template library with ansi / iso c + + is used in designing the program , and the dynamic access mechanism and the startup with zero content are realized by using the specialization and inheritance object of vector template class as the data container which can change the content itself according to the number of discretization node data of a computing practicality . so , the fact that the use of the static ems memory which is not necessary is avoided 在设计面向对象有限元程序中运用了基于ansi isoc + +标准模板库( stl )的技术，以向量模板类的特化继承对象为变容量数据容器，实现了可按计算实例的离散结点数量动态存取数据的机制和数据容器的零容量启动，从而避免了运算时系统对静态内存空间的超量占用。
