Two-Dimensional Shape Analysis of Complex Geometry Based on Photogrammetric Models of Iconostases
Three-dimensional digitization technologies have been proved as reliable methods for detailed and accurate spatial data collection from existing cultural heritage. In addition, the point segmentation techniques are particularly relevant for contour detection and classification of the unstructured po...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-07-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/11/15/7042 |
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| author | Isidora Đurić Ratko Obradović Ivana Vasiljević Nebojša Ralević Vesna Stojaković |
| author_facet | Isidora Đurić Ratko Obradović Ivana Vasiljević Nebojša Ralević Vesna Stojaković |
| author_sort | Isidora Đurić |
| collection | DOAJ |
| description | Three-dimensional digitization technologies have been proved as reliable methods for detailed and accurate spatial data collection from existing cultural heritage. In addition, the point segmentation techniques are particularly relevant for contour detection and classification of the unstructured point cloud. This paper describes an approach to obtain 2D CAD-like visualizations of complex geometry from photogrammetric models so that the detected contours of particular object elements can be used for 2D shape analysis. The work process uses the point clouds derived from photogrammetric models to create the plane visualization of the object’s geometry by segmenting points based on the verticality geometric feature. The research presented is on the case studies of iconostases as the specific art and architectural elements of the Christian Orthodox church that can be appreciated only in situ. To determine relations between the characteristics of the particular shapes and the iconostases’ style origins, the mathematical method of shape analysis was applied. This study aims to numerically describe the stylistic characteristics of the shapes of the main parts of the iconostasis concerning the artistic period to which it belongs to. The concept was based on the consideration of global shape descriptors and associated shape measurements which were used to analyze and classify the stylistic characteristics of the iconostases. The methodology was applied to the representative examples of three iconostases from the Baroque and Classicism art movements. The results illustrated that the proposed methods and techniques, with certain improvements, could be helpful for CAD visualization and shape analysis of complex geometry. |
| first_indexed | 2024-03-10T09:18:58Z |
| format | Article |
| id | doaj.art-915c6fe89f71472b9d2cca220a4eb728 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T09:18:58Z |
| publishDate | 2021-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-915c6fe89f71472b9d2cca220a4eb7282023-11-22T05:23:35ZengMDPI AGApplied Sciences2076-34172021-07-011115704210.3390/app11157042Two-Dimensional Shape Analysis of Complex Geometry Based on Photogrammetric Models of IconostasesIsidora Đurić0Ratko Obradović1Ivana Vasiljević2Nebojša Ralević3Vesna Stojaković4Department of Fundamental Disciplines, Faculty of Technical Sciences, University of Novi Sad, 21000 Novi Sad, SerbiaDepartment of Fundamental Disciplines, Faculty of Technical Sciences, University of Novi Sad, 21000 Novi Sad, SerbiaDepartment of Fundamental Disciplines, Faculty of Technical Sciences, University of Novi Sad, 21000 Novi Sad, SerbiaDepartment of Fundamental Disciplines, Faculty of Technical Sciences, University of Novi Sad, 21000 Novi Sad, SerbiaDepartment of Architecture and Urban Planning, Faculty of Technical Sciences, University of Novi Sad, 21000 Novi Sad, SerbiaThree-dimensional digitization technologies have been proved as reliable methods for detailed and accurate spatial data collection from existing cultural heritage. In addition, the point segmentation techniques are particularly relevant for contour detection and classification of the unstructured point cloud. This paper describes an approach to obtain 2D CAD-like visualizations of complex geometry from photogrammetric models so that the detected contours of particular object elements can be used for 2D shape analysis. The work process uses the point clouds derived from photogrammetric models to create the plane visualization of the object’s geometry by segmenting points based on the verticality geometric feature. The research presented is on the case studies of iconostases as the specific art and architectural elements of the Christian Orthodox church that can be appreciated only in situ. To determine relations between the characteristics of the particular shapes and the iconostases’ style origins, the mathematical method of shape analysis was applied. This study aims to numerically describe the stylistic characteristics of the shapes of the main parts of the iconostasis concerning the artistic period to which it belongs to. The concept was based on the consideration of global shape descriptors and associated shape measurements which were used to analyze and classify the stylistic characteristics of the iconostases. The methodology was applied to the representative examples of three iconostases from the Baroque and Classicism art movements. The results illustrated that the proposed methods and techniques, with certain improvements, could be helpful for CAD visualization and shape analysis of complex geometry.https://www.mdpi.com/2076-3417/11/15/7042cultural heritagedigitizationphotogrammetry2D visualizationpoint cloudsegmentation |
| spellingShingle | Isidora Đurić Ratko Obradović Ivana Vasiljević Nebojša Ralević Vesna Stojaković Two-Dimensional Shape Analysis of Complex Geometry Based on Photogrammetric Models of Iconostases Applied Sciences cultural heritage digitization photogrammetry 2D visualization point cloud segmentation |
| title | Two-Dimensional Shape Analysis of Complex Geometry Based on Photogrammetric Models of Iconostases |
| title_full | Two-Dimensional Shape Analysis of Complex Geometry Based on Photogrammetric Models of Iconostases |
| title_fullStr | Two-Dimensional Shape Analysis of Complex Geometry Based on Photogrammetric Models of Iconostases |
| title_full_unstemmed | Two-Dimensional Shape Analysis of Complex Geometry Based on Photogrammetric Models of Iconostases |
| title_short | Two-Dimensional Shape Analysis of Complex Geometry Based on Photogrammetric Models of Iconostases |
| title_sort | two dimensional shape analysis of complex geometry based on photogrammetric models of iconostases |
| topic | cultural heritage digitization photogrammetry 2D visualization point cloud segmentation |
| url | https://www.mdpi.com/2076-3417/11/15/7042 |
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