三维地形快速可视化方法研究

Research on Visualization and Real-time Rendering of Three-Dimension Terrain Surface

地形三维可视化及其实时绘制技术一直以来都是空间信息应用领域的研究热点。本文以三维地形的实时可视化为研究目标,分析了基于离散高程点的不规则三角网构建的基本理论与方法,提出了一种改进的内插规则格网到DEM算法,并通过具体试验验证了该方法的可行性和有效性。

The technique of visualization and real-time rendering of three-dimensional （3D） terrain surface has always been a hot research issue in the field of GIS. This essay analyzes the fundamental theory and approaches of building Triangulated Irregular Network （TIN） based on discrete elevation data and getting Regular Square Grid via interpolating TIN, proposes a new idea for interpolating Regular Square Grid and proves the feasibility and the efficiency of this approach through detailed experiments.