map digitizingの例文

• Map digitizing data quality control method
• At present , the theory and application of topographical mapping system is quite mature . more of them reached the criterion of topographical map and the requirement of map digitizing . however , the deeper application and conversion of digital map to gis are ignored
• Topographical maps are the principal frame form of gis , and realization map digitizing and offering gis basic spatial data is one of the important research fields in surveying and gis , which is also necessity of development of science and technology . based on building gis - oriented topographical mapping system theories , this themes apply the advanced objectarx technology , aim at topographical mapping and exporting to gis , and resolve several key problems , such as symbols analysis and building , dtm and contour line automatic drawing , topographical map adjoining , digital image rectifying etc . and it offers models and arithmetic , realizing the general functions of gis - oriented topographical mapping system
• Characteristic and application of gis firstly . secondly it introduced the designing frame of uiims , achieving of the sub - - function and the pattem of the application . it emphasizes on the principle of the map digitizing , the foundation of the data model and encoding means , the construction of the topology data structure , the theory of different format data convertion