Distortion visualization techniques for 3D coherent sets: A case study of 3D building property units
Distortion visualization techniques for 3D coherent sets: A case study of 3D building property units
复制标题
3D 相干集的畸变可视化技术：3D 建筑属性单元的案例研究
DOI：
10.1016/j.compenvurbsys.2019.101382
复制
发表时间：
2019-11
期刊：
影响因子：
--
通讯作者：
Guo Renzhong
中科院分区：
文献类型：
--
作者：
Ying Shen;Chen Naibin;Li Weiyang;Li Chengpeng;Guo Renzhong
在三维地籍和三维物业管理系统中，大量的建筑物属性对象是相邻的，作为主要的属性单元组装成一个三维连贯的集合。在相干集合的可视化过程中，由于相干集合中各单元之间的空间关系和相对位置关系存在遮挡、模糊、迷宫等问题，给观察和理解相干集合及其单元带来了困难。常用的三维物体观察方法，如旋转和导航，通过调整视角和摄像机视场的位置来获得所需的可视化效果，由于集合内三维物体的相邻关系，使得对相干集合的交互体验和方向控制能力较弱。基于“焦点+语境”理论，提出了一种新的基于两种基本失真方法的先验问题求解方法。该方法首先将相干集离散为单个对象，并根据线性或正交函数改变它们的位置，同时保持它们的相对位置和对偶拓扑关系。为了保持三维相干集的全局上下文感知（拓扑和位置）和焦点三维建筑物属性对象的突出效果，采用三个评价指标来评估相应的失真结果。基于深圳市真实的三维聚类属性的实例研究表明，本文提出的方法不仅可以扩大聚焦目标的可视范围，为被遮挡的聚焦目标建立清晰的视线，而且保持一定的垂直度和接近度，便于理解整体相干物体的空间占有和分布。
In the fields of 3D cadastre and 3D property management system, numerous building property objects are adjacent as primary property units assemble into a 3D coherent set. During visualization process of the coherent set, occlusion, obscure, mazy spatial relationships and relative location relationships among the units of the coherent set cause difficulty in observing and understanding the set and its units. Common 3D objects viewing method, such as rotation and navigation obtaining desired visualization effects through adjusting the view angle and position of the camera's field of view, provides weak interactive experience and orientation control for the coherent set because of the neighbour relationships of the 3D objects inside the set. In this paper, a novel method is proposed to solve the prior problems with two basic distortion methods based on “focus + context” theory. The coherent set is first discretized into individual objects and changed them locations according to linear or orthogonal function, while keeping their relative location and dual topological relationships. To maintain both global context awareness (topology and locations) of 3D coherent set and highlight effect of the focus 3D building property object, three evaluation indexes are adopted to assess the corresponding distortion results. A case study based on the real clustered 3D property in Shenzhen was conducted to evaluate the performance of distortion functions, the result shows that the method proposed in this article can not only expand the visual area of focused object and create a clear line of sight (LOS) to the focal object previously obscured, but also maintain verticality and proximity in some degree to facilitate understand the spatial occupation and distribution of whole coherent objects.
登录
查看更多内容
DOI：
10.3138/carto.43.3.175
发表时间：
2008-10
期刊：
Cartogr. Int. J. Geogr. Inf. Geovisualization
影响因子：
--
作者：
C. Häberling;H. Bär;L. Hurni
通讯作者：
C. Häberling;H. Bär;L. Hurni
DOI：
10.1109/tvcg.2008.132
发表时间：
2008-11
影响因子：
5.2
作者：
Yu-Shuen Wang;Tong-Yee Lee;Chiew-Lan Tai
通讯作者：
Yu-Shuen Wang;Tong-Yee Lee;Chiew-Lan Tai
DOI：
10.1016/j.compenvurbsys.2013.04.003
发表时间：
2013-09
期刊：
Comput. Environ. Urban Syst.
影响因子：
--
作者：
D. Shojaei;M. Kalantari;I. Bishop;A. Rajabifard;A. Aien
通讯作者：
D. Shojaei;M. Kalantari;I. Bishop;A. Rajabifard;A. Aien
DOI：
--
发表时间：
2008
期刊：
--
影响因子：
--
作者：
Joachim Böttger;U. Brandes;O. Deussen;Hendrik Ziezold
通讯作者：
Joachim Böttger;U. Brandes;O. Deussen;Hendrik Ziezold
DOI：
10.1109/infvis.1996.559215
发表时间：
1996-10
期刊：
Proceedings IEEE Symposium on Information Visualization '96
影响因子：
--
作者：
M. Carpendale;D. Cowperthwaite;F. Fracchia
通讯作者：
M. Carpendale;D. Cowperthwaite;F. Fracchia