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《Geomatics World》 2008-03
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Data Generalization Based Updating Method in Digital Environment

ZHAO Ren-liang1, CHEN Jun1, WANG Dong-hua1, SHANG Yao-ling1, WANG Zhong-xiang1, AI Ting-hua2 (1. National Geomatics Center of China, Beijing 100044, China; 2. School of Resource and Environment Science, Wuhan University, Wuhan 430079, China)  
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.
【Fund】： 国家自然科学基金资助项目(40620130438)
【CateGory Index】： P208
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