基于二阶微观地形因子的可视化增强研究

地形可视化是对地形的直观表达,是人们了解和认识地形的基本途径。通过传统的可视化技术所展现的三维高低起伏效果,相比平面图虽然更容易判读出地形的总体走势,但对地球表面的纹理细节要素的刻画程度却远远不足,无法达到特定工程应用中对地形真实性的需求。因此,本文以黄土丘陵地区原始DEM为主要数据源,通过研究二阶微观地形因子,重点阐述了如何利用二阶微观地形因子增强DEM地形可视化效果,从而达到刻画出该地形正常难以辨别的细小地表单元的目的。

Enhancement Technology Research of Visualization Based on the Binomial Micro Terrain Factors

Terrain visualization is the visual expression of the terrain, is that people know and understand the basic way of terrain.Through traditional visualization technology shows 3 d effect of ups and downs, more easily than plan of the overall trend of terrain, but the terrain texture detail elements of degree is insufficient, cannot reach specific requirements on the reality of terrain in engineering application.This paper, taking the loess hilly region of the original DEM as the main data source, by studying the second-order micro topographic factor, to discriminate terrain texture detail to reflect the terrain normal difficult to distinguish the tiny object unit.To highlight the different terrain characteristic and the detail information.