三维测绘数据的减余转换与共享发布  

Reducing Redundancy Conversion of 3D Mapping Data for Sharing and Distribution

作　　者：李永强[1] 盛业华[1] 江水[1] 洪鸣[2] 

机构地区：[1]南京师范大学虚拟地理环境教育部实验室地理科学学院,南京210097 [2]南京理工大学计算机系,南京210007

出　　处：《地球信息科学》2007年第3期52-56,共5页Geo-information Science

摘　　要：本文提出一种适合三维测绘数据的共享转换与发布的基本流程:数据采集,预处理,初建模,格式转化,再加工,发布。其中原始数据的预处理是重要的一步,作者对重复点,零长度线,零面积面进行了简单删除操作,从而有利于简化数据方便后续处理与展示。最后作者利用共享数据结构对各种通用数据格式进行转换发布,并对各种格式作了简要分析与比较。This paper provides a kind of method to share, convert and distribute 3D mapping data, which includes data collection, pre-process, pre-modeling, file format conversion, reprocessing and distribution. The pre-process is an important step of the whole process. The duplicate points, non-length edges, and non-area faces are deleted to reduce the redundant data for 3D showing. The distribution and sharing in order to let later work easier to do and make the data suitable for 3D mapping data should use the general engineer format, on the basis of the auto-collection using software to do further edition will finish a high quality and high effective digit production. So at last the data are distributed in 5 data file formats by the sharing data structure.

关 键 词：三维建模数据 删减冗余数据 数据格式转换 共享发布 

分 类 号：P208[天文地球—地图制图学与地理信息工程]