High-quality cartographic roads on high-resolution DEMs
High-quality cartographic roads on high-resolution DEMs
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DOI：
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发表时间：
2011
期刊：
影响因子：
5.3
通讯作者：
Michael Vaaraniemi;Marc Treib;Rüdiger Westermann
中科院分区：
文献类型：
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作者：
Michael Vaaraniemi;Marc Treib;Rüdiger Westermann
在三维地理信息系统中，如何高效、高质量地绘制以矢量数据表示的复杂道路网和高分辨率的数字高程模型（DEM）是一个重要的问题。与纸质地图一样，理想的道路地图表示方法是使用圆形帽和突出的清晰可辨的颜色。另一方面，遥感技术的进步导致DEM的规模和分辨率爆炸式增长，使得制图道路的整合非常具有挑战性。在这项工作中，我们调查的技术集成到一个地形渲染器能够处理高分辨率的数据集这样的道路。我们评估现有的方法叠加矢量数据到DEM的适用性，我们适应两种方法，通过添加分析计算的圆帽在道路段的两端绘制的地图道路。我们比较这两种方法的性能和质量方面，我们概述了应用领域中的任何一种方法是可取的。
The efficient and high quality rendering of complex road networks—given as vector data—and high-resolution digital elevation models (DEMs) poses a significant problem in 3D geographic information systems. As in paper maps, a cartographic representation of roads with rounded caps and accentuated clearly distinguishable colors is desirable. On the other hand, advances in the technology of remote sensing have led to an explosion of the size and resolution of DEMs, making the integration of cartographic roads very challenging. In this work we investigate techniques for integrating such roads into a terrain renderer capable of handling high-resolution data sets. We evaluate the suitability of existing methods for draping vector data onto DEMs, and we adapt two methods for the rendering of cartographic roads by adding analytically computed rounded caps at the ends of road segments. We compare both approaches with respect to performance and quality, and we outline application areas in which either approach is preferable.