基于三维地形森林资源数据融合研究.pdf

的相互转换,实现了二维地图与三维地形的有机联动。 4。实现了三维属性数据的获取。通过MapX组件访问二维地图, 获取二维地图乡镇边界、乡村边界、小班边界等边界特征点,通过二维地图与三维地形坐标转化机制,转换所有这些特征点,实现了二维地图属性数据到三维数据的合理转换。 。在三维地形上首先融合了各种基础数据,包括乡镇边界、乡村边界、小班边界等;接着融合了防火队伍、防火物资等森林防火数据,实现其二维三维显示及修改、删除、查询等操作;最后还融合了GPS数据,实现GPS轨迹回放,通过回放为后续过火面积的计算等提供基础。关键词:数据融合,森林资源数据分析,规则网格,三维建模, 纹理映射 RESEARCH AND IMPLEM匝Nn蛆’ION ON FOREST RESOURCE DArA FUSION BASED ON 3DTERRAIN ABSTRACT Though there are numerous forest resources data,in away,one kind offorest resources data can only reflect acertain characteristic ofthe object due tothe existing different means and methods being used to obtain forest resources ,the data fusion toforest resources multi-source data isvery important to plete and accurate information. By using theMapX andOpenGL toolsandtaking theZhejiang province Lin’an city asexperiments region,this research not only built a three—dimensional terrain model,but also studiedandimplemented the forest resources heterogeneous data thispaper,the results achieved mainly inthefollowing aspects: analyzed position,sources andcharacteristicsof forest resources Was the foundation for data fusion and integration. andimplemented theintegration andtheestablishment ofthe forest resources data fusion method based on terrain thispaper,it used the Grid model tobuild the three-dimensional terrain model,took theDEM elevation data as quadrilateral's apex elevationdata,then,aRer the setup of areasonable light parameter and vector calculming method,a quadrilateral waft: constructed by using approximmion essive quadrilateral would generate the up and down 3D terrainwhich achieved arealisticvisionofthe forest resources data. the remote sensing data by 3D terrain texture mapping thecharacteristicsofforest resource data,the two—dimensional map was established by Maplnfo, and three。dimensional window was constructed by the Gauss projec