Appearance-driven conversion of polygon soup building models with level of detail control for 3D geospatial applications
In many 3D applications, building models in polygon-soup representation are commonly used for the purposes of visualization, for example, in movies and games. Their appearances are fine, however geometry-wise, they may have limited information of connectivity and may have internal intersections betw...
| Main Authors: | , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2020
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/138209 |
| _version_ | 1811681004875677696 |
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| author | Chen, Kan Johan, Henry Erdt, Marius |
| author2 | School of Computer Science and Engineering |
| author_facet | School of Computer Science and Engineering Chen, Kan Johan, Henry Erdt, Marius |
| author_sort | Chen, Kan |
| collection | NTU |
| description | In many 3D applications, building models in polygon-soup representation are commonly used for the purposes of visualization, for example, in movies and games. Their appearances are fine, however geometry-wise, they may have limited information of connectivity and may have internal intersections between their parts. Therefore, they are not well-suited to be directly used in 3D geospatial applications, which usually require geometric analysis. For an input building model in polygon-soup representation, we propose a novel appearance-driven approach to interactively convert it to a two-manifold model, which is more well-suited for 3D geospatial applications. In addition, the level of detail (LOD) can be controlled interactively during the conversion. Because a model in polygon-soup representation is not well-suited for geometric analysis, the main idea of the proposed method is extracting the visual appearance of the input building model and utilizing it to facilitate the conversion and LODs generation. The silhouettes are extracted and used to identify the features of the building. After this, according to the locations of these features, horizontal cross-sections are generated. We then connect two adjacent horizontal cross-sections to reconstruct the building. We control the LOD by processing the features on the silhouettes and horizontal cross-sections using a 2D approach. We also propose facilitating the conversion and LOD control by integrating a variety of rasterization methods. The results of our experiments demonstrate the effectiveness of our method. |
| first_indexed | 2024-10-01T03:34:03Z |
| format | Journal Article |
| id | ntu-10356/138209 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T03:34:03Z |
| publishDate | 2020 |
| record_format | dspace |
| spelling | ntu-10356/1382092021-01-28T05:42:46Z Appearance-driven conversion of polygon soup building models with level of detail control for 3D geospatial applications Chen, Kan Johan, Henry Erdt, Marius School of Computer Science and Engineering Fraunhofer Singapore Engineering::Computer science and engineering 3D Geospatial Model Conversion In many 3D applications, building models in polygon-soup representation are commonly used for the purposes of visualization, for example, in movies and games. Their appearances are fine, however geometry-wise, they may have limited information of connectivity and may have internal intersections between their parts. Therefore, they are not well-suited to be directly used in 3D geospatial applications, which usually require geometric analysis. For an input building model in polygon-soup representation, we propose a novel appearance-driven approach to interactively convert it to a two-manifold model, which is more well-suited for 3D geospatial applications. In addition, the level of detail (LOD) can be controlled interactively during the conversion. Because a model in polygon-soup representation is not well-suited for geometric analysis, the main idea of the proposed method is extracting the visual appearance of the input building model and utilizing it to facilitate the conversion and LODs generation. The silhouettes are extracted and used to identify the features of the building. After this, according to the locations of these features, horizontal cross-sections are generated. We then connect two adjacent horizontal cross-sections to reconstruct the building. We control the LOD by processing the features on the silhouettes and horizontal cross-sections using a 2D approach. We also propose facilitating the conversion and LOD control by integrating a variety of rasterization methods. The results of our experiments demonstrate the effectiveness of our method. Accepted version 2020-04-29T02:55:44Z 2020-04-29T02:55:44Z 2020 Journal Article Chen, K., Johan, H., & Erdt, M. (2020). Appearance-driven conversion of polygon soup building models with level of detail control for 3D geospatial applications. Advanced Engineering Informatics, 44, 101049-. doi:10.1016/j.aei.2020.101049 1474-0346 https://hdl.handle.net/10356/138209 10.1016/j.aei.2020.101049 44 en Advanced Engineering Informatics © 2020 Elsevier Ltd. All rights reserved. This paper was published in Advanced Engineering Informatics and is made available with permission of Elsevier Ltd. application/pdf |
| spellingShingle | Engineering::Computer science and engineering 3D Geospatial Model Conversion Chen, Kan Johan, Henry Erdt, Marius Appearance-driven conversion of polygon soup building models with level of detail control for 3D geospatial applications |
| title | Appearance-driven conversion of polygon soup building models with level of detail control for 3D geospatial applications |
| title_full | Appearance-driven conversion of polygon soup building models with level of detail control for 3D geospatial applications |
| title_fullStr | Appearance-driven conversion of polygon soup building models with level of detail control for 3D geospatial applications |
| title_full_unstemmed | Appearance-driven conversion of polygon soup building models with level of detail control for 3D geospatial applications |
| title_short | Appearance-driven conversion of polygon soup building models with level of detail control for 3D geospatial applications |
| title_sort | appearance driven conversion of polygon soup building models with level of detail control for 3d geospatial applications |
| topic | Engineering::Computer science and engineering 3D Geospatial Model Conversion |
| url | https://hdl.handle.net/10356/138209 |
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