Acceding to traits of right angle of building image , it adopts statistics recognization when first , at late it is structure recognization . ( 4 ) frame and contents of topographic map pattern recognization system are designed ( 4 ) 、提出了地形图模式识别系统的大体框架及组成内容，简单设计出识别子系统的结构。
( 2 ) it negotiated the idea of xp programming . it put forward the process of making unit testing , the method of predigesting the content of it , and the measures of realizing the simple design . ( 3 ) it analyzed the relations of xp team practices ( 2 )讨论了xp编程的思想，给出了进行单元测试的步骤、对单元测试内容的简化方法，为实现简单设计而在消除重复代码上所采取的功能细粒度、创建新方法的措施。
