Level of detail (LoD) geometric analysis of relief mapping employing 3D modeling via UAV images in cultural heritage studies

Ergun, Bahadir; Sahin, Cumhur; Bilucan, Furkan

doi:10.1186/s40494-023-01041-z

Cited by 4 publications

(2 citation statements)

References 44 publications

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“…Reducing micro details can result in the regression of the produced model to a lower level (e.g. LoD2 instead of LoD3) impacting its accuracy (Ergun et al, 2023). Certainly, regardless of the underlying reasons, difficulties in image matching have a direct impact on the triangulation phase, where camera parameters are employed to create a point cloud from the tie points.…”

Section: Discussionmentioning

confidence: 99%

Performance Analysis of a Drone Development Kit-derived Digital Elevation Model

DOĞRULUK,

YALÇIN

2023

International Journal of Environment and Geoinformatics

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Surface modeling constitutes is a crucial aspect in numerous engineering inquiries and earth observation endeavors. In contemporary times, the acquisition of geospatial data essential for the digital representation of local regions is increasingly facilitated through drone-based methodologies, supplanting conventional terrestrial data gathering techniques. The market presently hosts a plethora of cost-effective, "ready-to-fly" unmanned aerial vehicles (UAVs), offering users the capability to generate photogrammetric outputs, including high geometric precision Digital Elevation Models (DEMs). Moreover, modularly structured drone development kits, designed for multifarious applications, are readily accessible for purchase. These drone kits offer an economically advantageous platform that users can customize to suit their specific needs. Nevertheless, the geometric precision of DEMs created using these kits hinges upon the capabilities of the imaging and navigation systems, in addition to the stabilization of the platform during autonomous flight. In this study, using a drone development kit and a commercial drone, simultaneous image acquisition was performed for the same study area and two different DEMs were produced. The efficacy of the DEM generated using the drone development kit was assessed through a comparative analysis with the DEM obtained from a commercial drone. In addition, geometric accuracy assessment was conducted for both DEMs using ground control points. The findings reveal the usability of drone development kits in precision DEM production, as well as their limitations.

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Section: Discussionmentioning

confidence: 99%

Performance Analysis of a Drone Development Kit-derived Digital Elevation Model

DOĞRULUK,

YALÇIN

2023

International Journal of Environment and Geoinformatics

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“…The levelof-detail display methods include the Level of Detail (LOD), Hierarchical Level of Detail (HLOD), and Nanite methods. The LOD method is typically used to describe the degree of detail in the presentation of an object at different distances or scales and represents an important concept in the fields of computer graphics and Ves [11]. This method aims to achieve the best possible realism and visual quality while maintaining a high performance by dynamically adjusting the level of detail of objects in a VE.…”

Section: Multiscale Methods In Vesmentioning

confidence: 99%

Study on Multiscale Virtual Environment Construction and Spatial Navigation Based on Hierarchical Structure

Chen,

Li,

et al. 2024

IJGI

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Multiscale virtual environments (MSVEs) allow the integration of elements and environments at different scale levels into a unified space, which facilitates researchers’ perception, understanding, and experimental research of complex geospatial spaces. Although there have been several methods for achieving multiscale effects in virtual environments (VEs), they cannot assist users in constructing more complete spatial cognitive maps and presenting multiscale information efficiently. This study proposes a hierarchical-structure-based MSVE construction method, which can effectively integrate multiscale information and ensure that the richness of details of information is gradually enhanced with the progression of the hierarchical structure. In addition, a spatial navigation study is conducted, considering the relationship between users’ perspective changes and spatial cognition, and the effects of users’ perspective changes on their spatial cognition in an MSVE are explored. A multiscale virtual wetland environment covering four levels is constructed to conduct a case study of a virtual environment of a wetland of Poyang Lake. The research results show that the proposed method is feasible. Moreover, the spatial navigation based on the change in the hierarchical perspective is in line with the spatial cognitive habits of users, which can satisfy the cognitive needs of users from the macro-region to specific wetland landscapes.

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CityGML Grotto ADE for modelling niches in 3D with semantic information

Yang,

Hou,

Fan

2024

Herit Sci

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The regions of East Asia, as well as South Asia and the Middle East are rich in cultural heritage of grottoes where a large number of Buddhist niches exist. Three-dimensional (3D) semantic modelling enriches 3D geometric models with an understanding of the historical and cultural value of cultural heritage, facilitating interoperability and analysis beyond mere visualization. 3D models with semantic information act as essential digital infrastructure for heritage management, knowledge dissemination and simulation analysis in cultural heritage. However, due to the lack of standardized data model for the grotto domain, it is difficult to exchange information, share knowledge and the advancement of spatial analysis and simulation. In order to fill the above-mentioned gap, this study develops a data model for niches as a CityGML Application Domain Extension (ADE) based on the CityGML 3.0 standard. In this ADE, niche components and their attributes are defined on two semantic levels, i.e., niche structural component and niche component member. A famous niche in China belonging to the World Heritage was selected as a case study to demonstrate the integration of geometries, semantics and attributes, illustrating that the extended ADE module complies with the CityGML 3.0 standard. This study provides novel insights into the 3D semantic modelling of niches as well as expands the applications scope of CityGML standard within the cultural heritage sector.

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Level of detail (LoD) geometric analysis of relief mapping employing 3D modeling via UAV images in cultural heritage studies

Cited by 4 publications

References 44 publications

Performance Analysis of a Drone Development Kit-derived Digital Elevation Model

Performance Analysis of a Drone Development Kit-derived Digital Elevation Model

Study on Multiscale Virtual Environment Construction and Spatial Navigation Based on Hierarchical Structure

CityGML Grotto ADE for modelling niches in 3D with semantic information

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