Delivering and using 3D models on the web: are we ready?

Scopigno, Roberto; Callieri, Marco; Dellepiane, Matteo; Ponchio, Federico; Potenziani, Marco

doi:10.4995/var.2017.6405

Cited by 54 publications

(53 citation statements)

References 14 publications

(14 reference statements)

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“…Using the DEM product derived in this study we exactly identified relatively flat areas and assigned them with elevation ( Figure 13), which provides quantitative indicators of the development of stepped glacial cirque. Recent developments in web-based 3D technologies have enabled interactive visualisation and analysis of large 3D point clouds which in turn enhances communication of the scientific results to wider audience [62]. These reasons motivated us to generate a stand-alone LiDAR Web portal enabling other researchers, professionals or public to explore the dataset without any need for special skills in computer graphics, geographic information science, installation of a special software or any additional plugins.…”

Section: Applications Of Dem and 3d Point Cloudmentioning

confidence: 99%

Combined Use of Terrestrial Laser Scanning and UAV Photogrammetry in Mapping Alpine Terrain

et al. 2019

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Airborne and terrestrial laser scanning and close-range photogrammetry are frequently used for very high-resolution mapping of land surface. These techniques require a good strategy of mapping to provide full visibility of all areas otherwise the resulting data will contain areas with no data (data shadows). Especially, deglaciated rugged alpine terrain with abundant large boulders, vertical rock faces and polished roche-moutones surfaces complicated by poor accessibility for terrestrial mapping are still a challenge. In this paper, we present a novel methodological approach based on a combined use of terrestrial laser scanning (TLS) and close-range photogrammetry from an unmanned aerial vehicle (UAV) for generating a high-resolution point cloud and digital elevation model (DEM) of a complex alpine terrain. The approach is demonstrated using a small study area in the upper part of a deglaciated valley in the Tatry Mountains, Slovakia. The more accurate TLS point cloud was supplemented by the UAV point cloud in areas with insufficient TLS data coverage. The accuracy of the iterative closest point adjustment of the UAV and TLS point clouds was in the order of several centimeters but standard deviation of the mutual orientation of TLS scans was in the order of millimeters. The generated high-resolution DEM was compared to SRTM DEM, TanDEM-X and national DMR3 DEM products confirming an excellent applicability in a wide range of geomorphologic applications.The general advantage of laser scanning over photogrammetry is in the ability of sampling several kinds of surfaces (e.g., top of vegetation canopy, inter-canopy surfaces, and ground) which are in the line of sight of the laser beam until impermeable surface restrains further penetration of the laser energy. UAV-SfM has become a low-cost alternative to TLS, generating point clouds with comparable accuracies to TLS albeit with the limitation of sampling the top surface in the field of view. Either way, in cases where TLS or UAV-SfM are used separately, data shadows originate in areas which are obscured in the sensor's field of view [23,29] (Figure 1). Complementing the unsampled areas with the surface altitude measurements is possible by sensing the area from multiple positions and different viewing perspectives by changing the location of the sensor. Zhang and Lin [30] provide a systematic overview of the lidar and photogrammetric data fusion. Cawood et al. [7] showed there is no exclusive method for capturing complex 3D geometry in the case study of 3D modelling a large boulder with distinct geological structural features. Combination of TLS and UAV-SfM provided the most satisfying results to capture the geometric complexity of the object of interest for structural analysis. A similar approach of combining different viewing geometry of TLS and photogrammetry was demonstrated in 3D modelling of a historical city by [23]. Planning the data collection in the mentioned studies concerned environments with a relatively easy access for the technology and the surveying pe...

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Section: Applications Of Dem and 3d Point Cloudmentioning

confidence: 99%

Combined Use of Terrestrial Laser Scanning and UAV Photogrammetry in Mapping Alpine Terrain

et al. 2019

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“…Among the software options that can be used to publish 3D models are Sketchfab 1 or p3d.in (Fig. 5), among others (Scopigno, Callieri, Dellepiane, Ponchio & Potenziani, 2017).…”

Section: Virtual Museumsmentioning

confidence: 99%

La arqueología virtual: de la excavación arqueológica a la gestión y socialización del patrimonio. Les cases de la Catedral (Tortosa) y el yacimiento protohistórico de La Cella(Salou), Tarragona

Cots

Vila

Fons

et al. 2018

Virtual archaeol. rev.

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Highlights: Photogrammetric technique saves the real information that emerges and prevents much of it from disappearing, a common occurrence in archaeological excavations. Virtual reconstruction is an effective method of presenting the results in an educational way for the general public. The final product needs to show the result of a scientific hypothesis in an attractive and understandable way. Abstract:This article reports how the new information technologies are used in two practical examples in the field of archaeology from the early stages of excavation up to the reporting of the results. The first example is an urban settlement focused on the process of documentation and recording, the presentation of the archaeological remains and the resulting museum discourse in Tortosa, Tarragona (Spain). The second example is a settlement near the coast with no urban problems or conditions, which is more focused on the diffusion of research results through a variety of virtual communication channels (La Cella, Salou). In this regard, we present a variety of techniques and systems that we apply to achieve our objectives. Photogrammetry is now an essential tool for recording archaeological data because it facilitates fieldwork, provides extremely accurate measurements and considerably increases the quality of the result. It also enables archaeological and heritage research to be socialized and the results target scientific and interpretative analysis. If it is combined with the appropriate software, the remains of artefacts and buildings recovered at the sites, and which in some cases cannot be conserved, can be displayed in 3D. Finally, it can be used to make recreations and virtual interpretations that can present all these archaeological data to a non-specialized public in the form of a virtual museum, an immersive virtual reality experience, or can be applied to improve scientific research, through 3D modelling and virtual experimentation.Keywords: dissemination; 3D reconstruction; virtual recreation; photogrammetry; virtual reality; heritage. Resumen:En este artículo presentamos una metodología de trabajo basada en la aplicación de las nuevas tecnologías de la información y la comunicación en el campo de la arqueología desde las primeras fases de excavación hasta la exposición final de los resultados mediante dos ejemplos prácticos, un yacimiento arqueológico en un contexto urbano, centrado o bien en todo el proceso de documentación y registro o bien en la propia presentación y discurso museístico de los restos arqueológicos en Tortosa, Tarragona (España); y un poblado justo al lado de la costa, sin ninguna problemática urbanística o condicionantes urbanos, centrado más bien en la socialización de los resultados mediante diversos canales de difusión virtuales (La Cella, Salou). En este sentido, presentamos algunas de las técnicas o sistemas utilizados para conseguir estos objetivos: en primer lugar, la fotogrametría se ha convertido en una herramienta imprescindible para el registro de datos arqueológicos (agi...

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“…Por el contrario, el proyecto Epigraphia3D dispone de una web propia en la que visualizar el contenido del catálogo digital (http://www.epigraphia3d.es/); en nuestro caso, queda por resolver la presentación del ciclo escultórico en la web, ya que la web es hoy en día el principal canal de comunicación utilizado para divulgar el conocimiento (Scopigno, Callieri, Dellepiane, Ponchio, & Potenziani, 2017). Aun así, nuestro proyecto, al igual que el de Epigrahipia 3D, tiene como objetivo fundamental aprovechar las ventajas de este nuevo formato virtual para introducir a un público no especialista en el conocimiento de la Arqueología.…”

Section: Otras Aplicaciones Móvilesunclassified

APP 3D: el ciclo escultórico del foro de Torreparedones (Baena, Córdoba)

Merino¹,

Moreno²,

González

2018

Virtual archaeol. rev.

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Lo más destacado: El ciclo escultórico está constituido por dos grupos dinásticos procedentes de Torreparedones. La técnica de registro 3D empleada para la digitalización del ciclo se ha realizado mediante escáner láser. La aplicación móvil permite de forma intuitiva consultar los modelos tridimensionales de todas las esculturas. Resumen:Los últimos estudios realizados en el conjunto escultórico de época romana del yacimiento arqueológico de Torreparedones (Baena, Córdoba), hallados en el pórtico norte del foro y en el área del templo, ponen de relieve el importante valor arqueológico de las esculturas. Estas investigaciones se han centrado en el registro de datos de sus superficies mediante empleo de escáner láser y en el estudio de la policromía original de algunas piezas, las cuales han sido seleccionadas por su relevancia dentro del conjunto. Con los resultados obtenidos en estos trabajos se procedió a realizar un aplicación gratuita, denominada "Ciclo Escultórico de Torreparedones", disponible para el sistema operativo Android. Esta aplicación permite, de forma intuitiva y fácil, consultar los modelos tridimensionales (3D) de las esculturas, además de poder acceder a una visita virtual en 360º de la sala Roma del Museo de Baena, así como a diferentes contenidos multimedia. El objetivo principal de este trabajo es promover el uso de la realidad virtual en el ámbito del patrimonio, facilitando que el visitante establezca una conexión directa entre el museo y el yacimiento arqueológico. La aplicación desarrollada se configura como una plataforma activa, en la cual pueda incorporarse, de manera científica y divulgativa, los nuevos resultados obtenidos de las investigaciones actuales y futuras.Palabras clave: escultura; época romana; escaneado láser; aplicación móvil; catálogo 3D; visita 360° Extended Abstract:The archaeological site of Torreparedones (Baena) is one of the most outstanding Roman sites in the Province of Cordoba, due to not only the structural remains excavated in recent decades, but also the relevance through the relevance of other recovered materials. In recent years, among the recordings made during excavations and in the area of the north portico of the forum and the temple, an important sculptural group from the high imperial time was documented. The sculptural cycle consists of two dynastic groups, which are currently part of the museum exhibition of Baena. The first, found in the area of the gate, consists of a toga, a female figure, a military sculpture and a fragment ideal statue (of the type hüftmantel). The second group, from the temple or near the same area, consists of two male and female seated statues representing: Divus Augustus, Divus Claudius and Diva Augusta (Livia). The latter offers a representation of idealized types, as characters portraits were produced post-mortem once the senate decreed their deification time. Because of the importance of this second group, a three-dimensional (3D) model of each of the pieces has been created. The main objective of this research, with...

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Delivering and using 3D models on the web: are we ready?

Cited by 54 publications

References 14 publications

Combined Use of Terrestrial Laser Scanning and UAV Photogrammetry in Mapping Alpine Terrain

Combined Use of Terrestrial Laser Scanning and UAV Photogrammetry in Mapping Alpine Terrain

La arqueología virtual: de la excavación arqueológica a la gestión y socialización del patrimonio. Les cases de la Catedral (Tortosa) y el yacimiento protohistórico de La Cella(Salou), Tarragona

APP 3D: el ciclo escultórico del foro de Torreparedones (Baena, Córdoba)

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