How to implant a global virtual terrain environment with multi-resolution has caught attention of many scholars,the management algorithm for massive texture data is always one of the key techniques for three-dimension terrain simulation.
建立具有多分辨率、海量数据的大规模虚拟地形场景越来越受到人们的关注,海量纹理数据的管理与生成算法是三维地景仿真的关键技术之一。
参考来源 - 一种面向对象的全球多分辨率纹理数据的预处理方法的研究It becomes possible that digital railway plan be used,which based on 3D terrain environment for the introduction of virtual reality and the wide application of digital photogrammetric survey.
虚拟现实技术的引入和数字摄影测量技术的广泛应用，使得基于三维虚拟地形环境的数字铁路选线成为可能。
参考来源 - 数字铁路选线系统的研究及实现·2,447,543篇论文数据，部分数据来源于NoteExpress
虚拟地形环境构建技术改变了矿山资源勘查传统方式，实现了虚拟找矿与勘探。
Virtual geological environment of mine has changed the traditional methods of prospecting for mine.
对虚拟森林环境的建模技术进行深入探讨，主要内容包括虚拟地形的构建和林木的几何重建技术。
We deeply discuss the techniques on geometric modeling. Under the condition of simulating virtual forest landscape, the primary landscapes are terrain and the tree.
实验结果证明，该算法在基本保持视觉效果不变的情况下，极大地提高了虚拟地形场景的绘制速度。
The experiment results indicate that this scheme may attain a much higher frame rate in rendering the virtual terrain scene, as well as maintain the visual quality.
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