In order to reduce memory loads for huge point sets on general pc platforms , we introduce a partition - based out - of - core strategy to balance usage of main and external memories 基本思想:基于外存的技术可以很好解决大模型的存储问题,而基于视点的细节层次控制技术可提供观察者一种很方便的交互控制手段,我们希望分析并结合上述两种技术,实现庞大三维模型在一般机器上的浏览。
When feature point sets are extracted respectively from the two images , correspondence between the point sets is then established by a two - stage matching algorithm . this matching algorithm is based on the alignment metric and < wp = 4 > rmse ( root mean square error ) 对两幅图像分别提取广义特征点集之后,提出一种基于对齐度准则和根均方误差的两步匹配算法完成同名控制点的建立。
4 - intersection theory in point set topology is cited into time domain and topological relation between several temporal forms are analyzed in detail . besides , the paper uses temporal topological relation to describe cadastral changing process particularly 把点集拓扑学中的四元组理论引用到了时间域中,详细地分析了几种时间形式之间的拓扑关系,用四元组描述的时态拓扑关系对地籍变更过程进行了详细的描述。
Commencing on february 25 , 2008 , the public can bring their used computer equipment to fourteen public collection points , or over 600 collection points set up at the housing estates , commercial and industrial buildings according to a district collection schedule commencing in late march 由二八年二月廿五日开始,市民可以把旧计算机产品交给十四个公众回收站,或由三月底开始按分区收集日期交给超过六百个在屋苑及工商楼宇所设立的回收站。