The paper researches the storage of line vector data based on quad-tree architecture, solves the problems of line vector data dividing and sparse and recovers the cracks between different LOD(lever of detail).

The B-spline curve-fitting algorithm is widely used in reversible compression of vector curve data and its mathematic expression.

This dissertation has emphatically researched the correlative theory and technique about controlling the quality of contour vector data, and developed a suit of practical checking system combining with the actual needs.

Spatial matching error analysis of vector data for landuse change surveying based on RS;

Study of vector data symbolization method based on vector-raster technique;

Overlay analysis on forest resource vector data for Maoershan Experimental Forest Farm,northeastern China.;

This paper researches into how to use the computer vision to measure cereal about the attribute of its geometry,color and luster,and then proposes to set up the standard vector database of cereal.

This paper presents a method for building the vector database directly from the digital line graph(DLG) in AutoCAD, on the basis of graph element format investigation and geographic information collection of DLG.

This paper analyzes the key technologies in the construction of the of image database,vector database,place-name database,discusses the method for the comprehensive application of the foundational geographical database in the E-government map system.