【摘要】 地形数据的三维可视化技术一直是3DGIS领域一项重要的研究技术。从地形实时渲染的需求出发,提出大地坐标系下的多分辨率地形组织模型,并对可视化过程中的坐标空间变换方法进行研究,提出一种适合大区域地形可视化的坐标空间变换方案,使可视化的三维地形场景尽可能真实反映其自然的分布形态,使影像纹理、地物与地形之间进行精确的映射与匹配。更多还原

【Abstract】 Terrain 3D visualization is always a hot research spot in 3DGIS,this paper,with the needs of terrain’s real-time rendering,combined with the multiple solution organization methods of terrain model under geographical coordination system,made a serious research on spatial transformation methods in visualization pipeline,and put forward a resolution on large scale terrain’s transformation.Besides,the methods of precise mapping and matching between image texture,features and terrain was established,so that the visualized terrain 3D scene can reflect their real and natural distribution.更多还原