摘要
城市空间信息平台的建设既要考虑宏观上的大区域空间格局分析,也要有微观层上的细节化信息分析,因此产生多尺度空间表达的需要。三维空间数据的多尺度表达,不同于二维数据,不仅要顾及输入数据的粒度特征,还要顾及可视化渲染软件平台的技术特征。鉴于Cesium成为三维空间数据可视化表达的重要平台,本研究基于Cesium系统平台及其三维可视化空间数据渲染基础功能,提出一种城市建筑物三维地图综合及多尺度可视化的方法,基于空间邻近、形状细节特征构建多层次二维数据基础,然后在多分辨率三维视觉感知条件下,实现三维建筑物的多粒度可视化渲染。
The construction of urban spatial information platform should take into account not only macro spatial pattern analysis of wide area,but also micro detailed information analysis,thereby generating the need of multiple-scale spatial expression.The multiple-scale expression of 3D spatial data is different from that of 2D data,considering both the granularity of input data and the technical characteristics of visualized rendering software platforms.Given that Cesium becomes an important platform for the visualized expression of 3D spatial data,this research proposed a method of 3D cartographic generalization and multiple-scale visualization of urban architecture based on Cesium systematic platform and its basic function of rendering visualized 3D spatial data,constructed a multi-layered 2D data foundation based on spatial proximity and detailed characteristics of shape and achieves multi-granularity visualized rendering of 3D buildings under the condition of multi-resolution 3D visual perception.
作者
陈浩
艾廷华
CHEN Hao;AI Tinghua(School of Resource and Environmental Sciences,Wuhan University,Wuhan Hubei 430079,China)
出处
《北京测绘》
2021年第3期312-316,共5页
Beijing Surveying and Mapping
基金
国家自然科学基金(41531180)。
关键词
三维建筑模型
三维制图综合
CESIUM
three-dimensional(3D)building model
three-dimensional(3D)cartographic generalization
Cesium
作者简介
陈浩(1995-),男,广东广州人,硕士在读,研究方向为三维可视化、深度学习与制图综合。E-mail:2018202050080@whu.edu.cn;通讯作者:艾廷华,E-mail:tinghuaai@whu.edu.cn。
