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《Geospatial Information》 2012-01
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Topographic Map Scanning Digitization and Precision Analysis Based on CASS7.0

CHEN Nan  
The topographic map scanning digitization is an important acquisition method for GIS data,which has become the mainstream of the map digitization.This article Introduced the scanning digitization's basic principle and the implementation process and with 1:500 existing topographic map for data sources,using professional software CASS7.0 realized the whole production process of the map scanning digitization.It discussed the scanning digital mapping the main error sources and analysed the calibration accuracy and precision of vector in the process of scanning and digitizing.
【Fund】: 国家自然科学基金资助项目(41071265);; 高等学校博士学科点专项科研基金课题(20105122110006)
【CateGory Index】: P208
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