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Title: Maintaining semantic information across generic 3D model editing operations
Authors: Yao, Sidan
Ling, Xiao
Nueesch, Fiona
Schrotter, Gerhard
Schubiger, Simon
Fang, Zheng
Ma, Long
Tian, Zhen
Keywords: Engineering::Computer science and engineering
Issue Date: 2020
Source: Yao, S., Ling, X., Nueesch, F., Schrotter, G., Schubiger, S., Fang, Z., . . . Tian, Z. (2020). Maintaining semantic information across generic 3D model editing operations. Remote Sensing, 12(2), 335-. doi:10.3390/rs12020335
Project: NRF2015VSG-AA3DCM001-024
Journal: Remote Sensing
Abstract: Many of today’s data models for 3D applications, such as City Geography Markup Language (CityGML) or Industry Foundation Classes (IFC) encode rich semantic information in addition to the traditional geometry and materials representation. However, 3D editing techniques fall short of maintaining the semantic information across edit operations if they are not tailored to a specific data model. While semantic information is often lost during edit operations, geometry, UV mappings, and materials are usually maintained. This article presents a data model synchronization method that preserves semantic information across editing operation relying only on geometry, UV mappings, and materials. This enables easy integration of existing and future 3D editing techniques with rich data models. The method links the original data model to the edited geometry using point set registration, recovering the existing information based on spatial and UV search methods, and automatically labels the newly created geometry. An implementation of a Level of Detail 3 (LoD3) building editor for the Virtual Singapore project, based on interactive push-pull and procedural generation of façades, verified the method with 30 common editing tasks. The implementation synchronized changes in the 3D geometry with a CityGML data model and was applied to more than 100 test buildings.
ISSN: 2072-4292
DOI: 10.3390/rs12020335
Schools: School of Computer Science and Engineering 
Rights: © 2020 The Authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SCSE Journal Articles

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