First Assessments on Heritage Science Oriented Image-Based Modeling Using Low-Cost Modified and Mobile Cameras

Adamopoulos, Efstathios; Rinaudo, Fulvio; Bovero, Alessandro

doi:10.5194/isprs-archives-xlii-2-w17-23-2019

Cited by 10 publications

(8 citation statements)

References 13 publications

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“…Therefore, it is thought that Zephyr software underperformed in generating a 3D model for the shrine. The similar result has been reported by by Adamopoulos et al (2019) in a study conducted to evaluate low-cost imaged-based modeling. It was concluded that even though 3D Zephyr was use similar algorithms with Agisoft Metashape, it was not able to reconstruct all datasets.…”

Section: D Model With 3d Zephyr Freesupporting

confidence: 89%

Analysis of Documentation Opportunities of Cultural Heritage Samples With Terrestrial Photogrametry Methods

Bilici

Uçar

Akay

et al. 2021

Turkish Journal of Forest Science

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Nowadays, as in many sectors, natural and cultural resources face the danger of extinction due to misuse and consumption-oriented life in tourism. Within the framework of the sustainability tourism principle, these resources should be determined, protected, and developed. With the advance technology, the use of photogrammetry offers new methods for surveying natural and cultural resources. In this study, the photographs of two historical sites were taken with a high-resolution handheld camera in order to evaluate the potential of terrestrial photogrammetry approach in the cultural heritage. Then, these photographs were used to develop three-dimensional models of the two sites using two different software-Agisoft Metashape and 3D Zephyr Free. For this study, two important cultural and historical heritages were selected; both located in the center of Giresun province in Turkey. The 3D models of the heritages developed using two software were compared to evaluate the capability of the software. In the evaluation process, 13 photographs for the historical door and 50 photographs for the shrine were used to generate 3D models. According to the evaluation of the models, it was observed that the model generated for the front surface of the Public Garden door provided more detailed and accurate results in both software. When these two programs are compared for the shrine, Agisoft Metashape produced a better 3D model than 3D Zephyr. The results also showed that the photographs obtained from a low-cost handheld camera could provide highly accurate and precise data for documentation of historical and cultural heritages.

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Section: D Model With 3d Zephyr Freesupporting

confidence: 89%

Analysis of Documentation Opportunities of Cultural Heritage Samples With Terrestrial Photogrametry Methods

Bilici

Uçar

Akay

et al. 2021

Turkish Journal of Forest Science

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“…The spatial resolution of thermography cameras is significantly lower than optical cameras [120]. Recently, affordable thermal camera models have come into the market, including smartphone-adjustable low-resolution instruments [121,122]. However, these inexpensive cameras provide lower accuracy, which makes them unusable for some applications.…”

Section: Infrared Thermographymentioning

confidence: 99%

Close-Range Sensing and Data Fusion for Built Heritage Inspection and Monitoring—A Review

Adamopoulos

Rinaudo

2021

Remote Sensing

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Built cultural heritage is under constant threat due to environmental pressures, anthropogenic damages, and interventions. Understanding the preservation state of monuments and historical structures, and the factors that alter their architectural and structural characteristics through time, is crucial for ensuring their protection. Therefore, inspection and monitoring techniques are essential for heritage preservation, as they enable knowledge about the altering factors that put built cultural heritage at risk, by recording their immediate effects on monuments and historic structures. Nondestructive evaluations with close-range sensing techniques play a crucial role in monitoring. However, data recorded by different sensors are frequently processed separately, which hinders integrated use, visualization, and interpretation. This article’s aim is twofold: i) to present an overview of close-range sensing techniques frequently applied to evaluate built heritage conditions, and ii) to review the progress made regarding the fusion of multi-sensor data recorded by them. Particular emphasis is given to the integration of data from metric surveying and from recording techniques that are traditionally non-metric. The article attempts to shed light on the problems of the individual and integrated use of image-based modeling, laser scanning, thermography, multispectral imaging, ground penetrating radar, and ultrasonic testing, giving heritage practitioners a point of reference for the successful implementation of multidisciplinary approaches for built cultural heritage scientific investigations.

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“…For this reason, the reflectance images were acquired with as homogeneous illumination conditions as possible. In addition, the utilization of low-cost cameras allowed increased versatility during acquisition [46]; however, extracting suitable radiometric information from the spectral images in order to perform any quantitative processing requires spatial and radiometric corrections [35]. True color (RGB) images were acquired with a commercial off-the-shelf (COTS) P30 smartphone (Huawei Technologies Group Co. Ltd., Shenzhen, China) with a camera employing a complementary metal-oxide semiconductor (CMOS) 40 MP Exmor RS IMX600y sensor (3648 × 2736 pixels resolution in RAW capturing mode, 1.01 µm pixel pitch).…”

Section: Multiband Image Acquisitionmentioning

confidence: 99%

Combining Multiband Imaging, Photogrammetric Techniques, and FOSS GIS for Affordable Degradation Mapping of Stone Monuments

Adamopoulos

Rinaudo

2021

Buildings

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The detailed documentation of degradation constitutes a fundamental step for weathering diagnosis and, consequently, for successful planning and implementation of conservation measures for stone heritage. Mapping the surface patterns of stone is a non-destructive procedure critical for the qualitative and quantitative rating of the preservation state. Furthermore, mapping is employed for the annotation of weathering categories and the calculation of damage indexes. However, it is often a time-consuming task, which is conducted manually. Thus, practical methods need to be developed to automatize degradation mapping without significantly increasing the diagnostic process’s cost for conservation specialists. This work aims to develop and evaluate a methodology based on affordable close-range sensing techniques, image processing, and free and open source software for the spatial description, annotation, qualitative analysis, and rating of stone weathering-induced damage. Low-cost cameras were used to record images in the visible, near-infrared, and thermal-infrared spectra. The application of photogrammetric techniques allowed for the generation of the necessary background, that was elaborated to extract thematic information. Digital image processing of the spatially and radiometrically corrected images and image mosaics enabled the straightforward transition to a spatial information environment simplifying the development of degradation maps. The digital thematic maps facilitated the rating of stone damage and the extraction of useful statistical data.

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First Assessments on Heritage Science Oriented Image-Based Modeling Using Low-Cost Modified and Mobile Cameras

Cited by 10 publications

References 13 publications

Analysis of Documentation Opportunities of Cultural Heritage Samples With Terrestrial Photogrametry Methods

Analysis of Documentation Opportunities of Cultural Heritage Samples With Terrestrial Photogrametry Methods

Close-Range Sensing and Data Fusion for Built Heritage Inspection and Monitoring—A Review

Combining Multiband Imaging, Photogrammetric Techniques, and FOSS GIS for Affordable Degradation Mapping of Stone Monuments

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