数字环境下的数据缩编更新方法

随着地理空间信息资源建设的不断推进与广泛应用,测绘工作的重心正在由初始的数据生产向数据更新与服务进行转变.在目前实际生产的各种更新方法中,由于利用较大比例尺数据更新较小比例尺数据的经济快速,日益引起了人们的重视.本文从目前空间数据更新生产工程的实际需求出发,分析了综合利用多种现势数据资料缩编更新空间数据库的需求与技术难点,以目前的空间数据的数字化生产工艺为基础,分析探讨了缩编更新的关键技术,实现了适应数字环境下的空问数据缩编更新.根据该方法开发的缩编更新系统--精图(GenTool),在生产中得到了初步应用,并获得了良好的效果.

Data Generalization Based Updating Method in Digital Environment

With the continuous improvement and wide application of geo-spatial information resources construction, the focal point of surveying and mapping is transformed from data producing to data updating and services. In the existed updating method in practical production, the method of updating small scale data using large scale data attracted the people's attention because it is economic and quick. The requirements and technical difficulties of the application of data generalization into spatial database updating using multi present data are analyzed firstly in this paper. And then, the design is outlined and some key technology details are emphasized on based on present spatial data digital production technology. Finally, the practical implementation of spatial data generalization updating in digital environment is introduced. The generalization updating system (GenTool) developed using this method was applied in production and achieved good effect.