DH2015 - Digital Heritage International Congress 2015

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3D Reconstruction with Fisheye Images: Strategies to Survey Complex Heritage Buildings
(IEEE, 2015) Covas, João; Ferreira, Victor; Mateus, Luís; Gabriele Guidi and Roberto Scopigno and Fabio Remondino
Over the last few decades photogrammetry and laser scanning have been frequently considered valuable tools for creating three-dimensional models from which metric and radiometric information can be derived for the survey of cultural heritage buildings, reverse engineering, space exploration and other areas. However reconstructing old heritage buildings digitally may be a challenging task especially when the shape, geometry and volume of these buildings are intrinsically complex therefore requiring specific methods or ad-hoc solutions. Medieval castles are typical constructions that exhibit these kinds of features with inaccessible locations, bridges, wide areas followed by small and limited spaces, battlements, towers and walls occluded by vegetation. This variety of problems can prolong the time required to complete the tasks when using laser scanning or photogrammetry with conventional lenses. In this paper we present a research of use of fisheye lenses in photogrammetry, for capturing medieval castles' geometric and radiometric information of hard to reach places. We conclude that this reduces the total time needed to capture the same amount of information gathered with other instruments, it allows replacing the usage of Unmanned Aerial Vehicles (UAV) in low flight situations, makes the survey connection between areas of a building easier, reduces the total number of images and allows making a general fast survey. The castles illustrated in this paper are the Castle of Sesimbra and the Castle of The Convent of Christ, both in Portugal.
Ceramics and 3D Technology: A Medieval Assemblage from Nemea, Greece
(IEEE, 2015) Athanassopoulos, Effie; Shelton, Kim; Gabriele Guidi and Roberto Scopigno and Juan Barceló
This work in progress reports on the application of 3D laser scanning to the study of medieval pottery from the excavations of the Sanctuary of Zeus at Nemea, Greece. As 3D modeling methods continue to improve, they offer an attractive alternative for artifact documentation, analysis and sharing of data. Here we present some examples and suggest that the advantages of 3D technology over the traditional methods of documentation are significant.
Fusion of 3D Data from Different Image-based and Range-based Sources for Efficient Heritage Recording
(IEEE, 2015) Muñumer, Estibaliz; Lerma, José Luis; Gabriele Guidi and Roberto Scopigno and Fabio Remondino
The rapid proliferation of three-dimensional (3D) data acquisition techniques based either on image-based approaches or on range-based approaches is changing the way cultural heritage is recorded. Independently of the technique selected, low-cost structure-from-motion (SfM) photogrammetric computer vision, stereo-plotting, surveying either with measuring tape, total station or global navigation satellite system (GNSS), up to laser scanning/LiDAR/RADAR, among others, there is a need to fuse efficiently different datasets. This research aims to test the fusion performance of the new 3DVEM - Register GEO software for the recording of a complex sculpture. The fusion of data will consider several point clouds acquired with a terrestrial laser scanner and one high-resolution point cloud generated with SfM software. The registration process is performed to merge all the data in a final homogeneous framework (reference system). The results obtained will be used to create a high-resolution 3D model of the sculpture from the consolidated data.
The Lion's Gate and the Persian Wall in Byblos - Opening the Doors of Digital Representation to the Cultural Heritage of a Resilient City in Lebanon
(IEEE, 2015) Garagnani, Simone; Bravo, Luisa; Madrigal, José Manuel Pagés; Gabriele Guidi and Roberto Scopigno and Pere Brunet
Byblos, modern Jbeil, is a northern Lebanese city considered as one of the oldest continuously inhabited cities since Neolithic times, designated as a UNESCO World Heritage site in 1984. Thus, the archaeological area, strictly surrounded by city boundaries, is the result of several civilizations that came over the centuries producing many layers of architectural buildings now in precarious state of conservation. The recent nomination of Byblos as one of the ''100 Resilient Cities'', a project pioneered by the Rockefeller Foundation, fostered some new intents aimed at the preservation of the urban space and the archaeological site. In order to support a possible valorization strategy, the Lion's Gate at the Persian Wall has been chosen as a case study to experiment how digital photogrammetric modeling of meaningful remains can improve dissemination of cultural legacy to remote visitors and transfer knowledge to town planners. This paper presents the preliminary research, which is supposed to be integrated by some more detailed surveys in the near future, in order to populate a shared web repository in which scholars, tourists and planners will find useful information on the archaeological park.
Mass Customization for Cultural Heritage 3D Models
(IEEE, 2015) Quantin, Matthieu; Hervy, Benjamin; Laroche, Florent; Kerouanton, Jean-Louis; Gabriele Guidi and Roberto Scopigno and Juan Barceló
Digital technologies in the last twenty years have offered cultural heritage (CH) new possibilities in conservation and promotion. 3D digitization has especially become more and more affordable and efficient. This leads to massive digitization projects and increasing amount of CH digital data. As an engineering team working on industrial techniques for reverse engineering, we are deeply affected by this effect. In this paper we propose a way to combine semantic information on top of the acquisition and modeling steps in order to manage heterogeneous historical data. We illustrate our approach with a use case composed of three overlapping historical objects related to Nantes' harbour history.
Sarcophagus of the Spouses Installation - Intersection Across Archaeology, 3D Video Mapping and Holographic Techniques Combined with Immersive Narrative Environments and Scenography
(IEEE, 2015) Fischnaller, Franz; Guidazzoli, Antonella; Imboden, Silvano; Luca, Daniele De; Liguori, Maria Chiara; Russo, Alfonsina; Lucia, Maria Anna De; Cosentino, Rita; Gabriele Guidi and Roberto Scopigno and Pere Brunet
This paper presents the Sarcophagus of the Spouses installation, an audiovisual performance and exhibit combining 3D video mapping, holographic techniques, computer graphics, high definition visualization with 3D reconstruction and digital storytelling embedded in an immersive narrative environment and scenography. The installation is based on the Sarcophagus of the Spouses (Italian: Sarcofago degli Sposi), a terracotta Etruscan masterpiece of 1.14 m high by 1.9 m wide created around 520 BC depicting a married couple in their last hug, now located in the National Etruscan Museum of Villa Giulia, Rome.

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Browsing DH2015 - Digital Heritage International Congress 2015 by Subject "3D modeling"

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