DH2015 - Track 2

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https://diglib.eg.org/handle/10.2312/14459

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Alchemy in 3D - A Digitization for a Journey Through Matter
(IEEE, 2015) Callieri, Marco; Pingi, Paolo; Potenziani, Marco; Dellepiane, Matteo; Pavoni, Gaia; Lureau, Aurelia; Scopigno, Roberto; Gabriele Guidi and Roberto Scopigno and Pere Brunet
In this work, we will present the outcomes of the 3D diagnostic investigations carried out on the painting Alchemy by Jackson Pollock. Thanks to an accurate digitization and a careful processing, we were able to generate a very precise high-resolution 3D model that proved to be useful in different stages of the diagnostic and conservation campaign. The 3D model was integrated in the conservation process, along with the other diagnostic investigations; the geometric data was also used to produce images and video sequences for dissemination purposes. The most interesting aspect of the work, however, was the idea of going beyond photo-realism and the use of the scanner-measured geometry to try to interpret and understand the traces and signs on the surface of the painting, in relation with the gestures and techniques used by Pollock while painting this masterpiece. Combining the knowledge of the curators and the metric data gathered in the digitization, we were able to discover and validate several interesting aspects of the painting, in the direction of trying to better understanding the painting process which was, in the idea of the artist, an essential part of the artwork. The 3D model of the artwork played a central role also in the temporary exhibition created for the dissemination of the conservation and the diagnostic campaign to the museum visitors. This was also done following the idea of using the geometry to explain the gestures, actions and techniques of Jackson Pollock at work. The 3D model was used to create an interactive kiosk, to have the visitors navigate the model and access explanations of relevant geometrical details and to produce a 1:1 physical reproduction to give the public the possibility to physically interact with the artwork.
The Application of Service Orientation on a Mobile AR Platform - A Museum Scenario
(IEEE, 2015) Rattanarungrot, Sasithorn; White, Martin; Jackson, Ben; Gabriele Guidi and Roberto Scopigno and Pere Brunet
Mobile augmented reality has become an influential tool for digital content representation in terms of enhancing users' experience and improving the adaptability and usability of augmented reality applications. In our research, we have developed a service oriented mobile AR architecture for multiple applications, such as a museum interactive or web app. Our solution enhances closed platform mobile AR applications to create more flexible mobile AR clients that efficiently support content acquisition and utilization of third party digital media contents on a real scene. Our example web service framework on a mobile AR client exploits specific museum (e.g. Victoria and Albert Museum) or third party APIs (e.g. Google Maps) to aggregate data from participating web service providers. A typical media API content request is sent to a content provider to obtain a targeted cultural object's associated media contents such as 3D models, images, text, videos and metadata. Acquired contents are then visualized in both VR and AR environments and consumed by mobile users. Other examples of supporting modules include photogrammetry based 3D reconstructions based on available commercial or open source web services and personalization that allow a user to request rich media, e.g. 3D models, and associated metadata, of a targeted cultural object for exploiting in a 'saved museum exhibition'.
Augmented Reality and Storytelling in Heritage - Application to Public Gardens
(IEEE, 2015) Guimaraes, Francisco; Figueiredo, Mauto; Rodrigues, Jose; Gabriele Guidi and Roberto Scopigno and Pere Brunet
Gardens, given its location, history, fauna, flora and environmental scenography, are places that are part of a natural heritage with its own cultural identity. These places are object of preservation, study and dissemination, such as cultural heritage, but in this case with a collection of natural artifacts exhibition alive and dynamic that allows user's natural immersion in the exhibition space. To create a personal user interaction with this natural heritage space is important to capture the story and aesthetics, and find other ways to immerse the user in the space. To that end, this article combines Augmented Reality technologies and concepts of Transmedia Storytelling applied to Gardens as a framework of media-art digital artifact applied to Caloust Gulbenkian Foundation Garden in Lisbon / Portugal.
Color and Hyperspectral Image Segmentation for Historical Documents
(IEEE, 2015) Ciortan, Irina Mihaela; Deborah, Hilda; George, Sony; Hardeberg, Jon Yngve; Gabriele Guidi and Roberto Scopigno and Pere Brunet
Several historical documents from the collection of the National Library of Oslo were acquired using a hyperspectral scanner. While each of the documents has its specific characteristics, requiring different image preprocessing steps, the common goal for all documents is to increase their legibility. The aim of this study is to show the advantage of hyperspectral imaging compared to traditional color imaging, in particular for the task of ink separation using distance-based classification method.
A Contextualized Educational Museum Experience - Connecting Objects, Places and Themes Through Mobile Virtual Museums
(IEEE, 2015) Graf, Holger; Keil, Jens; Engelke, Timo; Pagano, Alfonsina; Pescarin, Sofia; Gabriele Guidi and Roberto Scopigno and Pere Brunet
This paper presents the results of ongoing work realizing a mobile virtual museum that enables the connection between locally dispersed museums, collections and artefacts. The mobile application interconnects venues, objects and stories for an enhanced user experience and increased learnability inside the museum. It contextualizes information and reveals missing and hidden links between the digital replicas of the objects displayed in four different venues under one storyline. Within this context, we also provide a preliminary evaluation on how the mobile virtual museum could be used as support to indirect formal learning of young visitors, improving memorability.
Development of a Low-Cost Application of Virtual Reality for the Promotion of Cultural Heritage
(IEEE, 2015) Esclapés, Javier; Tejerina, Daniel; Martín, Alejandro; Fabregat, Laia; Gabriele Guidi and Roberto Scopigno and Pere Brunet
This paper shows the state of a research about cultural heritage whose main purpose is to allow the user to move virtually to any place of cultural or architectonic interest that, either for economic or accessibility reasons, is very difficult or impossible to visit.
The Digital ArchiMusic Patterns in Alhambra
(IEEE, 2015) Elrawi, Osama; Gabriele Guidi and Roberto Scopigno and Pere Brunet
This paper is a part of an ongoing research project that is seeking to clarify the interrelationship between the architecture of the Alhambra and Andalusian music at that time. Despite that Alhambra was built long ago before the recent digital age, but it contains some phenomena's that points out to the relationship between 2D and 3D patterns and the type of music at that time. The term ''digital'' was never known at that time, but the basis of digital knowledge did exist, even if tools and equipment's did not. This research paper is seeking to clarify this theoretical basis that proves the interrelationship between architecture and music and to proof that both were stemming from one integrated cosmological source.
Digital Panorama
(IEEE, 2015) Borra, Davide; Gabriele Guidi and Roberto Scopigno and Pere Brunet
In 1787 it was Robert Barker to invent the term Panorama, still used to today all over the world to determine a large view, up until 360 degrees. His show has traveled European cities and the American new frontier, letting visitors enter into far painted cities or ancient history episodes. The Cinema Museum, in the movies archaeology section, digitally proposes the same experience. A small cylindrical cave houses the Digital Panorama, a semi-immersive environment, which creates visual and audio panoramas and back in time journeys into Turin cinema history. The visual-tactile interface design is of note because it has been designed to be equally available both by blind and seeing people, as for the Cinema Museum philosophy a museum for all. This paper illustrates the project critical points, the choices operated during the operating process and the interface reviews.
Digital Study and Web-based Documentation of the Colour and Gilding on Ancient Marble Artworks
(IEEE, 2015) Siotto, Eliana; Palma, Gianpaolo; Potenziani, Marco; Scopigno, Roberto; Gabriele Guidi and Roberto Scopigno and Pere Brunet
Greek and Roman marble artworks have been deeply studied from a typological and stylistic point of view, while there is still a limited knowledge on the pigments, dyes, binders and technical expedients used by Roman artists. In a renewed scientific interest towards the ancient polychromy (colour and gilding), a digital methodological and multidisciplinary approach can provide valuable information to better investigate and understand this fundamental aspect and to get a complete sense on Greek and Roman marble artworks. Following this research direction, the paper proposes a systematic methodological process defined to detect, document and visualize the preserved (and in some cases the digital reconstructed) original colour and gilding on Roman marble sarcophagi (II-IV century AD). The process defines a working pipeline that, starting from the selection of the artefact to study, proposes a set of investigation steps to improve our knowledge of its original painting. These steps include the direct virtual inspection, the archaeological and historical research, the on-site scientific investigation by multispectral imaging, spectroscopic and elemental analysis (eventually supported by micro-invasive techniques performed in laboratory), the accurate polychrome surface acquisition by colour calibrated 2D images. All the data produced are integrated with a high-resolution 3D model to support enhanced analysis and comparison and to create a digital 3D polychrome reconstruction by virtual painting. Finally, all those data are also made accessible on the web by using a cutting edge platform for visual media publication and interactive 3D visualization. This systematic and multidisciplinary process was tested on the so-called 'Annona sarcophagus’' (Museo Nazionale Romano - Palazzo Massimo, inv. no. 40799).
Enabling Social Interaction in the Museum through the Social Display Environment
(IEEE, 2015) Diaz, Paloma; Bellucci, Andrea; Aedo, Ignacio; Gabriele Guidi and Roberto Scopigno and Pere Brunet
Visitors of museums and cultural heritage sites are not different from other types of citizens and, hence, they are getting more and more engaged into a participatory culture that encourages them to play an active role and not only acting as information consumers. In this paper we describe a technological platform that makes it possible to enable such proactive behavior by supporting social storytelling and interaction in the domain of cultural heritage sites. The platform development was inspired by a workshop run with cultural heritage professionals and students who identified social interaction as a key feature of an enhanced experience with cultural objects.
Engaging and Shared Gesture-based Interaction for Museums - The Case Study of K2R International Expo in Rome
(IEEE, 2015) Fanini, Bruno; D'Annibale, Enzo; Demetrescu, Emanuel; Pagano, Alfonsina; Ferdani, Daniele; Gabriele Guidi and Roberto Scopigno and Pere Brunet
This paper presents a full life-cycle production and standardized workflow to deploy a shared and engaging gesturebased experience within a museum, connecting two different natural interaction applications. The research presented in this paper is specifically focused on Admotum and Holoint, two gesture-based applications developed for the V-Must.net in occasion of ''Keys to Rome'' international exhibition on Roman Culture. The workflow described here includes 3D content production, application design, development and integration within flexible museum setups, together with evaluation activities to explore more on the user's' educational benefits and the potential of such collaborative museum experience.
Engaging Community Members with Digitally Curated Social Media Content at an Arts Festival
(IEEE, 2015) Shih, Patrick C.; Han, Kyungsik; Carroll, John; Gabriele Guidi and Roberto Scopigno and Pere Brunet
Capturing, uploading, and presenting social media content online have become the standard way for people to share their experiences with friends, family members, and others. In this paper, we describe our effort to extract, aggregate, and visualize, in a smartphone app, real-time and historical hyperlocal social media discussions and photos created at a regional arts festival that attracted over 100,000 visitors over a period of 5 days. Participants reported that the resulting content enriched their festival experience, and that it helped to create a social scaffold encouraging them to further engage and interact with others both physically and virtually through sharing even more user-contributed content.
Environment Map Based Lighting for Reflectance Transformation Images
(IEEE, 2015) Ludwig, Michael; Meyer, Gary; Gabriele Guidi and Roberto Scopigno and Pere Brunet
Environment map based lighting has proven to be an effective technique in simulations and real time rendering for adding realism and conveying complex illumination to the viewer. We present a novel algorithm for using environment maps to light and render polynomial texture maps. The technique is demonstrated with reflectance transformation images stored using both polynomial texture maps and hemispherical harmonics. The limitations of employing hemispherical harmonics in this context are discussed.
The Etruscans and the Afterlife - An Engaging Exhibition with Accurate Scientific, Technological and Communicative Requirements
(IEEE, 2015) Guidazzoli, Antonella; Imboden, Silvano; Luca, Daniele De; Liguori, Maria Chiara; Verri, Luigi; Bellavia, Giovanni; Russo, Alfonsina; Lucia, Maria Anna De; Cosentino, Rita; Gabriele Guidi and Roberto Scopigno and Pere Brunet
The communication of museums, with the aim to engage and attract a wider audience, is undergoing a radical change, seeking in ICT a help. The joint exhibition ''The Etruscans and the Afterlife'', hosted by the National Etruscan Museum of Villa Giulia and the Museum of the History of Bologna - Genus Bononiae - presents a strong commitment towards a renewed communicational effort of this kind, merging a traditional display of archaeological findings and spectacular technological applications. The paper presents the three digital applications developed by VisitLab Cineca for the exhibition: a projection show combining 3D architectural mapping, with 10 coordinated projectors, and a holographic projection of the Sarcophagus of the Spouses; the holographic projection of the bronze vase called ''Situla della Certosa''; a Computer Graphics short movie, ''Ati at the discovery of Veii''.
Exploring the Past with Google Cardboard
(IEEE, 2015) Fabola, Adeola; Miller, Alan; Fawcett, Richard; Gabriele Guidi and Roberto Scopigno and Pere Brunet
Combining digital reconstruction with mobile technologies has the potential of enriching visitors experience to historic sites. Through designing a mobile App with Google Cardboard it is possible to use technology already in peoples' pockets to provide immersive on-site exploration of historic sites. This paper looks at our experience in developing such a mobile App which acts as a digital guided tour of the remains of St Andrews Cathedral. The App brings together traditional media such as audio, images, panoramas, 3D video and 4 Steradian (or 360°) video with a mobile smartphone and Google Cardboard to provide a tour of one of Scotland's most important historic sites. The mobile App is available from both Google Play and iTunes, providing direct delivery to a potential audience of millions. It complements the location-aware mediaeval St Andrews App, which provides a guided tour to the town of St Andrews as a whole. In the absence of Google Cardboard the App is still useful providing both visual content and audio commentary on this historic monument.
A Fulldome Interactive Visitor Experience - A Novel Approach to Delivering Interactive Virtual Heritage Experiences to Group Audiences in Full Dome Projection Spaces, Evaluated Through Spatial Awareness and Emotional Response
(IEEE, 2015) Tredinnick, John; Richens, Paul; Gabriele Guidi and Roberto Scopigno and Pere Brunet
The National Trust is experimenting with the use of portable fulldome projection spaces as a means of engaging its visitors with virtual reality reconstructions of the cultural heritage it holds. To date dome technology has been used to successfully deliver non-interactive presentations to hundreds of visitors across three of its properties, however these have not made full use of the interactive elements of the game engine technology that is used to display the virtual scenes. We propose a possible approach to delivering multiplayer interactive experiences that are tailored for both the heritage audience and the fulldome medium. This is to be tested through a public engagement at Cheltenham Science Festival 2015.
A Hand-held 3D-Printed Box Projector - Study for a Souvenir from a Mixed-Reality Experience
(IEEE, 2015) Rossi, Daniele; Gabriele Guidi and Roberto Scopigno and Pere Brunet
The most recent developments in digital technology have given rise to an increasingly close, articulate, and profitable contamination between reality and virtuality, creating a completely new mixed-reality experience in which enjoying cultural goods becomes mediated by technology and translated into something technological. The memory of a mixed-reality event usually ends with the simple audio-visual recording of the event, which is later shared privately or on social networks. Our aim is to illustrate a quick, low-cost procedure to create portable reproductions of spatial augmented reality experienced in urban spaces. The idea of the souvenir grows out of a desire to connect the memory of a site-specific cultural exhibit to the architectural heritage that frames it and serves as a background. We define the technical/operational framework for realizing a hand-held 3D-printed box projector based on the use of a smartphone and Pepper's ghost effect.
Heritage Move. A Natural and Lightweight Navigation Schema for Low-Cost, Non-Stationary Immersive Virtual Environments
(IEEE, 2015) Olbrich, Manuel; Keil, Jens; Makiela, Thomas; Gabriele Guidi and Roberto Scopigno and Pere Brunet
Experiencing 3D models of historical reconstructions and places is still an active issue considering the wide variety of displaying and interaction devices for immersive Virtual Reality. Moreover, as standards are missing, the sheer endless possibilities to map e.g. gestural input and other input reads to particular needs in navigation and selection, leave an open field of finding the right balance between functionality, usability (especially in an exhibition context), and user experience. In our paper we focus on creating a low-cost, fully immersive and nonstationary Virtual Reality setup, based on novel HMD and sensing devices that allow users to intuitively experience such virtual environments. Our approach enables users to freely walk around inside the virtual space, while keeping them physically inside a limited interaction and sensing space. Our contribution addresses challenges of balancing between system mobility and tracking, freedom of interaction, limited physical spaces and immersion. The goal is to keep position and interaction tracking and display technologies economically and technically affordable for the use in the museum context.
High-Quality Point Based Rendering Using Fast Single Pass Interpolation
(IEEE, 2015) Schütz, Markus; Wimmer, Michael; Gabriele Guidi and Roberto Scopigno and Pere Brunet
We present a method to improve the visual quality of point cloud renderings through a nearest-neighbor-like interpolation of points. This allows applications to render points at larger sizes in order to reduce holes, without reducing the readability of fine details due to occluding points. The implementation requires only few modifications to existing shaders, making it eligible to be integrated in software applications without major design changes.
Illumination Compensation for High-resolution Multispectral Image Mosaicing of Herritage Paintings
(IEEE, 2015) Duliu, Alexandru; Jakob, Vogel; Serafima, Sister; Lasser, Tobias; Navab, Nassir; Gabriele Guidi and Roberto Scopigno and Pere Brunet
When investigating artworks, having the ability to examine the reflectance spectra at every image pixel can us give insight into the materials and pigments used in its creation. Multispectral imaging is a great tool to perform this task, however, when acquiring images with a multispectral camera, in addition to the reflectance spectra, the surface interaction with the illumination is also captured. This hampers quantitative measurements of the surface. We introduce a novel multispectral imaging system and illumination compensation approach, that mitigates the influence of illumination on image formation. We showcase the performance of our system by producing highresolution multispectral mosaic images (low or high dynamic range) of artworks dated from the beginning of the XIX-th century, to the present day.

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