标題: Distortion visualization techniques for 3D coherent sets: A case study of 3D building property units

作者: Ying, S (Ying, Shen); Chen, NB (Chen, Naibin); Li, WY (Li, Weiyang); Li, CP (Li, Chengpeng); Guo, RZ (Guo, Renzhong)

來源出版物: COMPUTERS ENVIRONMENT AND URBAN SYSTEMS  卷: 78  文獻号: UNSP 101382  DOI: 10.1016/j.compenvurbsys.2019.101382  出版年: NOV 2019  

摘要: 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.

入藏号: WOS:000488137100006

語言: English

文獻類型: Article

作者關鍵詞: 3D cadastre; Distortion visualization; Coherent objects; Orthogonality; Proximity; Sight accessibility

地址: [Ying, Shen; Chen, Naibin; Li, Weiyang; Li, Chengpeng; Guo, Renzhong] Wuhan Univ, Sch Resource & Environm Sci, Wuhan 430079, Hubei, Peoples R China.

[Ying, Shen] Wuhan Univ, Minist Educ, Key Lab Geog Informat Syst, Wuhan 430079, Hubei, Peoples R China.

[Guo, Renzhong] Shenzhen Univ, Res Inst Smart City, Shenzhen 518060, Peoples R China.

[Ying, Shen; Guo, Renzhong] Minist Land & Resources, Key Lab Urban Land Resources Monitoring & Simulat, Shenzhen 518034, Peoples R China.

通訊作者地址: Ying, S (通訊作者)，Wuhan Univ, Sch Resource & Environm Sci, Wuhan 430079, Hubei, Peoples R China.

電子郵件地址: shy@whu.edu.cn

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