The Theory And Technology Of Integration Of Map Production And Spatial Data Capturing

At present,the map-makers have two main works:map production and spatial data capturing. This paper's purpose is to integrate them and to gain both of map and spatial data in one production process for getting twice the result with half the effort. In this paper,the author discusses systematically the theory and the key technology of integration of map production and spatial data capturing. The main content and results of this research are detailed as following:1. The theoretical research on digital mapping.The author puts forward to the concepts of Static and Dynamic Digital Mapping,and addresses their characteristic and methods,considers that map production and spatial data capturing are static. After analyzing and study two transitions of Map to Spatial Data and Spatial Data to Map,the author thinks the spatial data capturing is a loss map information process,and for map production firstly symbolize from spatial data,then reinforce the map information. The Map Production Model (MPM) is the summary of all kinds of map production. The integration model is the best model in MPM and it infers that "Spatial Data First,Map Second " is the production process. It summarizes four models as well as nine instances,which often occur in the process of digital mapping.2. The key technology in the integration model.The map symbolization is the first key in this model. The spatial data can be compiled through map symbols. For publishing paper map,some approaches,for examples,area feature symbolization,feature covering,making mask and so on,are accomplished on the process. It is the second key that spatial attribute database management is applied in digital mapping. When a user adds or changes a feature,its attribute and symbol will be changed together. These ensure map production,while spatial data capturing or updating. Study application methods of the multi-sources data in map production,including sort of sources,data collection,and data processing,in order to updating the map and spatial data in one platform. Put forward the new sort of spatial data error based on production. The artificial operation error is the main affection part on spatial data quality. Spatial data visualization is the best method of checking data. Discuss the method of map data to apart-color EPS file,it fits to map publish of mass data,mix vector and grid data and multi-special color data.3. The application of the integration model. With this model we design and program the Digital Mapping System of 1:250,000 joint operations map,and this system has been applied widely in the military mapping field,for 1:250,000 joint operations map production and updating 1:250,000 map database. This is the best validation about the integration model.