ABSTRACT

This paper proposes elevation models to promote, evaluate, and compare various terrain representation techniques. Our goal is to increase the reproducibility of terrain rendering algorithms and techniques across different scales and landscapes. We introduce elevation models of varying terrain types, available to the user at no cost, with minimal common data imperfections such as missing data values, resampling artifacts, and seams. Three multiscale elevation models are available, each consisting of a set of elevation grids, centered on the same geographic location, with increasing cell sizes and spatial extents. We also propose a collection of single-scale elevation models of archetypal landforms including folded ridges, a braided riverbed, active and stabilized sand dunes, and a volcanic caldera. An inventory of 78 publications with a total of 155 renderings illustrating terrain visualization techniques guided the selection of landform types in the elevation models. The benefits of using the proposed elevation models include straightforward comparison of terrain representation methods across different publications and better documentation of the source data, which increases the reproducibility of terrain representations.

摘要

本文提出了海拔模型，以促进，评估和比较各种地形表示技术。我们的目标是提高跨不同比例和地形的地形渲染算法和技术的可重复性。我们介绍了各种地形类型的高程模型，这些模型可以免费提供给用户，同时具有最小的常见数据缺陷，例如缺失数据值，重采样伪像和接缝。提供了三个多尺度高程模型，每个模型都包含一组以相同地理位置为中心的高程网格，并随着像元大小和空间范围的增加而增加。我们还提出了原型地形的单个比例高程模型集合，包括折叠的山脊，辫状的河床，活动的和稳定的沙丘以及火山口。78种出版物的清单（共155种效果图）说明了地形可视化技术，指导了在高程模型中选择地形类型。使用建议的高程模型的好处包括不同出版物之间的地形表示方法的直接比较，以及源数据的更好文档，从而提高了地形表示的可重复性。