摘要
3D地形图是一种用三维形式对地形进行可视化表达的数字地图。三维地形图能立体地模拟出地貌特征,可以为用户提供视觉反馈,带来身临其境的感受和体验,让人们能更轻松地对地图进行查看、理解和研究,对三维地理信息的模拟和三维可视化技术研究有着重要意义。运用ArcGIS软件对地图进行场景转换,通过拉伸地形图的海拔高度,对地形图进行三维效果显示,并导入二维矢量数据,制作成具有立体效果的3D地形图。通过对图像灰度值及光影变换关系的研究,运用Photoshop软件对上述数据集进行渲染,使之呈现出三维仿真效果,制作3D地形图,实现3D地形图的可视化。
3D topographic map is a kind of digital map which visually expresses the terrain in three-dimensional form.3D topographic map can simulate geomor phological features stereoscopically,provide visual feedback for users,bring immersive feeling and experience,and make it easier for people to view,understand and study the map.It is of great significance to the research of 3D geographic information simulation and 3D visualization technology.It is suggested to use Arc GIS software to transform the scene of the map,stretch the altitude of the topographic map,display the topographic map with three-dimensional effect,and import two-dimensional vector data to make a 3D topographic map with three-dimensional effect.Through the study of the gray value of the image and the relationship between light and shadow transformation,the above data set is rendered by Photoshop software,which shows the effect of 3D simulation,makes 3D topographic map,and realizes the visualization of 3D topographic map.
出处
《科技创新与应用》
2024年第19期139-142,共4页
Technology Innovation and Application
