Study on Forest Fire Prevention Three-Dimensional Background Database
Aijun Xu 1, Yongshun Li 2 and Danfeng Wang 1
1School of Information Engineering, Zhejiang Forestry University, Lin’an, Zhejiang, 311300, China
2The Real Estate Surveying & Mapping Office, Kaituo, Hangzhou, Zhejiang, 310003, China
Abstract. The forest fire prevention background database is the data set which contains all the related data of forest fire prevention, mainly including each kind of attribute data, the spatial data as well as the remote sensing image data. It is a very important basis for the forest fire prevention direction. By researching the three-dimensional background database building method, the paper introduces the forest fire prevention three-dimensional background database creation method which uses MapX and OpenGL as the development tools, mainly study the following fields in the MapX and OpenGL environment: three dimensional terrain modeling method in forest fire prevention background database creation, texture mapping method, two- dimensional and three dimensional linkage, the fusion of the forest resources and fire prevention resources data, the design of the forest fire prevention three dimensional background database and so on. The real three dimensional terrains are established on the basis of the OpenGL, the DEM altitude data, the establishment of the illumination, the normal vector and so on. And the demonstration can be implemented really by integrating the OpenGL texture mapping mechanism and the remote sensing data in the three dimensional terrain. Taking the two-dimensional attribute data of the MapInfo form as a foundation and using the suitable coordinate transformation, the linkage between the two-dimensional map and the three dimensional is achieved.
Keywords: forest fire prevention; three dimension background database; data fusion; coordinate linkage; 3D modelling
In: Wan, Y. et al. (eds) Proceeding of the 8th international symposium on spatial accuracy assessment in natural resources and environmental sciences, World Academic Union (Press).