虚拟地理环境中发光注记的表示方法研究  

Research on Glowing Annotation Expression Method in Virtual Geographic Environment

作　　者：王丽君 曹亚妮[3] 

机构地区：[1]信息工程大学地理空间信息学院,河南郑州450001 [2]西安测绘总站,陕西西安710054 [3]西安卫星测控中心,陕西西安710054

出　　处：《地矿测绘》2017年第4期1-4,24,共5页Surveying and Mapping of Geology and Mineral Resources

基　　金：国家自然科学基金(41371383)

摘　　要：虚拟地理环境中,注记的清晰表达是重要的一个方面。在视景浏览时,注记可能很快被三维建筑物遮挡隐藏,尤其是道路名称注记;在蜗牛视角中观察时,建筑物遮挡使注记与道路之间的视觉关联丢失。为此,文章介绍了一种发光注记的表示方法,运用3种形式:透明光环注记、发光注记和发光道路,解决了遮挡注记的可见性问题。In the virtual geographical environment, the clear expression of annotation is an important aspect. In the view of the scene ,the annotation may soon be hidden by the 3D building, especially the road annotation. In the view of the snail, the building blockade causes the visual association between the annotation and the road to be lost. Therefore, this paper introduces a method about the glowing annotation expression, which uses three forms, including transparent auraannotation, glowing annotation and road glowing, it is to solve the visibility problem of occlusion annotation.

关 键 词：虚拟地理环境 透明光环注记 发光注记 发光道路 

分 类 号：P208[天文地球—地图制图学与地理信息工程] P209[天文地球—测绘科学与技术]