Investigating the past using remote sensing techniques

Themistocleous, Kyriacos

doi:10.1117/12.2600227

Cited by 3 publications

(6 citation statements)

References 8 publications

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“…The history of the Church of Panayia Karmiotissa originated when Carmelite friars settled in Cyprus during the 3 rd Crusade [1]. However, it is unknown exactly when the monastery was established and when the church was built [26].…”

Section: Resultsmentioning

confidence: 99%

“…The digital documentation of the church included laser scanning, in combination with the images acquired through UAV and SLR cameras that were processed through photogrammetry that created a digital BIM model of the church. The methodology used to document the church included a photogrammetric survey [1,9] using different methods of acquiring images of the exterior and interior of the church. Ground control points (GCPs) were first placed inside and outside of the church in order to acquire topographic coordinates and reference the geometry of the building.…”

Section: Methodsmentioning

confidence: 99%

“…The Carmelite monastery in the Limassol region at Polemidia was established, according to different sources, anytime between the middle of the 13th century A.D. to the start of the 14th century A.D [1]. The monastery was likely abandoned in 1570, following the Ottoman Invasion.…”

Section: Study Areamentioning

confidence: 99%

“…Innovative digital applications provide researchers with powerful tools for the digital acquisition, storage, conservation, recreation, reconstruction, and representation of cultural heritage sites, monuments and objects [1]. Recent developments in photogrammetry technology provide a simple and cost-effective method of generating relatively accurate 3D models from 2D images [2][3][4].…”

Section: Introductionmentioning

confidence: 99%

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HBIM for cultural heritage: the case study of Panayia Karmiotissa Church

Themistocleous

Ιωαννίδης²,

Tryfonos³

et al. 2022

Earth Resources and Environmental Remote Sensing/Gis Applications XIII

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HBIM (Heritage Building Information Modelling) is used for the documentation of the Church of Panayia Karmiotissa, near Limassol, Cyprus. The HBIM model is based on the geometric information obtained by digital documentation of the monument. Using laser scanning and Structure for Motion photogrammetric techniques, exterior images were collected using a drone with a 20MP camera and the interior images were taken using an SLR 20 MP camera. Ground control points were used both externally and internally to geo-reference the images using SfM photogrammetry. A Z+F latest technology 3D laser scanner was utilized to scan both the exterior and interior of the church. The images were used in order to create a 3D reconstruction of the Church and used photogrammetry to generate a point cloud of the church and a 3D surface texture model with ortho-images. Following, the data generated by the laser scanner and photogrammetry was processed to create a 3D model to document the church using Heritage Building Information Modeling (HBIM). The main objective of this case study was to create an HBIM model of the Church of Panayia Karmiotissa to digitally register and holistically to document the monument. HBIM is an important tool for the multidisciplinary area of conservators, architects and in general engineer activities, as it provides virtual details that are useful for monitoring, preservation and restoration.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Study Areamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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HBIM for cultural heritage: the case study of Panayia Karmiotissa Church

Themistocleous

Ιωαννίδης²,

Tryfonos³

et al. 2022

Earth Resources and Environmental Remote Sensing/Gis Applications XIII

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“…In order to illuminate the interior of the church, multiple lighting sources were used to project uniform lighting on the wall surfaces. The camera was fixed in place by a 3D axis hand-held gimbal to stabilize the camera and avoid blurry images [8]. The exterior of the church was photographed using a 6 meter telescopic pole with the camera fixed on top of the pole.…”

Section: Photogrammetrymentioning

confidence: 99%

The use of digital twin models to document cultural heritage monuments

Themistocleous

Evagorou²,

Mettas³

et al. 2022

Earth Resources and Environmental Remote Sensing/Gis Applications XIII

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A digital twin model can be defined as a connection between a virtual model and its real-life counterpart, by providing an interactive virtual environment that represents the real world. The use of digital twin models in cultural heritage enables better decision-making about preventive maintenance, heritage management, and interpretation, as well as accurate digital documentation. In cultural heritage, digital twin models are important in order to convey the real-life experience of the space through an accurate and detailed virtual representation. The use of a realistic virtual environment depends on the theory that people perceive and respond to virtual environments in the same manner as the real world. Therefore, a very realistic virtual environment is expected to create the emotion in the person as they would have achieved in the physical site. In this study, a digital twin model was created using Structure for Motion photogrammetry and a depth camera mapping system and compared to a model generated using laser scanning. The use of in-depth camera mapping utilizes panoramic image walkthroughs by facilitating panoramic image views by rendering an overview of the space. The use of digital twin models in cultural heritage provides a 4th dimension in space by providing additional semantic and geometric information to the user.

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Identification and forecasting of coastal erosion using aerial and UAV images

Themistocleous

2023

Ninth International Conference on Remote Sensing and Geoinformation of the Environment (RSCy2023)

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This study seeks to establish a methodology in order to determine the rate of coastal erosion using temporal aerial and UAV images. Part of the methodology focuses on forecasting coastal erosion and mapping Posidonia oceanica. Initial results indicate that there may be a correlation between coastal erosion and other related dynamics, such as the presence of Posidonia oceanica. UAV images acquired using UAVS in the Spyros Beach area near Larnaca, Cyprus were compared with aerial photos provided by the Lands and Surveys Department of the Government of Cyprus in order to estimate coastal erosion. In this study, the results indicate that, instead of coastline erosion, the coastline is actually expanding at a constant rate over the forecasted period. The beach nourishment observed may be related to the reduction of Posidonia oceanica. This reduction of the Posidonia oceanica forms a natural breaker between the shoreline and the sea, leading to a reduction of wave energy which thereby results in an enhanced accumulation of sand at the beach.

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Investigating the past using remote sensing techniques

Cited by 3 publications

References 8 publications

HBIM for cultural heritage: the case study of Panayia Karmiotissa Church

HBIM for cultural heritage: the case study of Panayia Karmiotissa Church

The use of digital twin models to document cultural heritage monuments

Identification and forecasting of coastal erosion using aerial and UAV images

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