Web端实景三维注记可视化技术研究

Annotation Visualization Technique Research in Real Scene 3D of Web Client-side

目前Web端对海量三维注记的可视化存在技术难点,基于前后端结合渲染、基于有向距离场的瓦片生成、基于屏幕空间的注记避让等技术,提出了在Web端Cesium框架下高效加载立体注记的解决方案。该方案在某省地理信息三维数据库管理系统三维可视化中取得了良好的应用效果,注记加载效率、易读性和清晰性均优于传统方法,大大提升了Web端实景三维场景下立体注记的可视化表达效果,为实景三维中国建设提供了重要的基础技术支撑。

At present,there are technical difficulties in the visualization of massive 3D annotation on Web client-side.Based on the combination of front and back end rendering,tile generation technology based on directed distance field,annotation avoidance technology based on screen space,we proposed an efficient solution of loading stereo annotations under the Cesium framework in Web client-side.The solution has achieved good application effect in the 3D visualization of geographical information 3D database management system in a province,of which the 3D annotation is more effective,legible and distinct.This solution greatly improves the visualization expression effect of annotations in the real scene 3D inWeb client-side,and provides an important basic technical support for the real scene 3D construction in China.