Application of 3D digital maps in equipment management;

Application of Digital Map to Flood Risk Graph;

MC calculation model of grid units on digital map used in route planning;

Curve watermarking technique for protecting copyright of digital maps;

This paper briefly summarizes the recent development of digitM mapping．It contains detailed introduction of the mappingfoundation of digital maps，production forms，software and their functionality．It also analyzes the recent development of digital map-ping in China.

Implementing of updating digital terrain map in mining subsidence area;

Selection and Rendering of Roam Path on 3D Digital Terrain Map;

To solve this problem, firstly digital terrain map is inputted into"Staging Geodatabase"with"import from CAD"tool offered by ArcGIS, then the data are took out from Staging Geodatabase through the programmed with C# and ArcObjects.

Research on object-oriented data model for digital geological map;

Its purpose is to solve further the problem about the data and criteria for 1∶50 000 digital geological map production through experimental study so as to work out a unifying work process and technical requirements and spread the application of the GIS technique.

A method of selecting coordinate transformation model in map digitization;

A variance analysis method is used to estimate the synthesis variance of coordinate data in map digitization.

Maps as being the most fundamental and essential data sources of database as well as GIS and RS, data precision of map digitization has become a matter of common interest to all related disciplines.

Discussion on the Method of Creating Geographic Data for ARC/INFO Based On Digital Topographic Map;

A study on the data process method of transformation from digital topographic map data to GIS data;

Production operation method of extracting DTM based on digital topographic map