Next Article in Journal
Spatiotemporal Distribution of Nonseismic Landslides during the Last 22 Years in Shaanxi Province, China
Previous Article in Journal
Utilizing BIM and GIS for Representation and Visualization of 3D Cadastre
Open AccessArticle

Method for 3D City Building Continuous Transformation Based on an Improved LOD Topological Data Structure

by Siyi Li 1,2, Wenjing Li 1,2,*, Zhiyong Lin 3 and Shengjie Yi 1
1
College of Resource and Environmental Engineering, Wuhan University of Science and Technology, Wuhan 430081, Hubei, China
2
Key Laboratory of Rock Mechanics in Hydraulic Structural Engineering, Ministry of Education, Wuhan 430081, Hubei, China
3
School of Remote Sensing and Information Engineering, Wuhan University, Wuhan 430079, Hubei, China
*
Author to whom correspondence should be addressed.
ISPRS Int. J. Geo-Inf. 2019, 8(11), 504; https://doi.org/10.3390/ijgi8110504
Received: 23 September 2019 / Revised: 30 October 2019 / Accepted: 31 October 2019 / Published: 8 November 2019
A 3D city model is an intuitive tool that is used to describe cities. Currently, level-of-detail (LOD) technology is used to meet different visual demands for 3D city models by weighting the rendering efficiency against the details of the model. However, when the visual demands change, the “popping” phenomenon appears when making transformations between different LOD models. We optimized this popping phenomenon by improving the data structure that focuses on 3D city building models and combined it with the facet shift algorithm based on minimal features. Unlike generating finite LOD models in advance, the proposed continuous LOD topology data structure is able to store the changes between different LOD models. By reasonably using the change information, continuous LOD transformation becomes possible. The experimental results showed that the continuous LOD transformation based on the proposed data structure worked well, and the improved data structure also performed well in memory occupation. View Full-Text
Keywords: topological data structure; 3D city buildings; level-of-detail; continuous transformation topological data structure; 3D city buildings; level-of-detail; continuous transformation
Show Figures

Figure 1

MDPI and ACS Style

Li, S.; Li, W.; Lin, Z.; Yi, S. Method for 3D City Building Continuous Transformation Based on an Improved LOD Topological Data Structure. ISPRS Int. J. Geo-Inf. 2019, 8, 504.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop