GCH 2019 - Eurographics Workshop on Graphics and Cultural Heritage

Permanent URI for this collection

https://diglib.eg.org/handle/10.2312/2632818

Browse

Now showing 1 - 7 of 7

Augmented Reality (AR) Maps for Experiencing Creative Narratives of Cultural Heritage
(The Eurographics Association, 2019) Echavarria, Karina Rodriguez; Dibble, Laurie; Bracco, Aurelie; Silverton, Edward; Dixon, Sophie; Rizvic, Selma and Rodriguez Echavarria, Karina
This research investigates how communities can meaningfully connect with Cultural Heritage through creative and digital experiences. It also explores how entry barriers can be lowered for a wider set of audiences to increase their participation in such experiences. For this, the research investigates the use of creative and narrative-based approaches, given the potential for stories to illuminate different viewpoints and interpretations of Cultural Heritage. The paper's main technical contribution is a novel approach for re-telling communities' narratives linked to people, objects, sites and events in the urban landscape as told by the community. The research proposed the novel concept of Augmented Reality (AR) Maps, which are physical maps with augmented digital narratives and delivered through Immersive Web technology. This concept is proposed as a means to document and disseminate the narratives in a way which can enhance the public understanding and appreciation of objects and sites in their communities. The approach has been tested with 32 children in local primary school in the city of Brighton and Hove (UK) in order to understand its suitability for community engagement. The significance of the research is that it demonstrates the potential of both creative and digital approaches for enabling meaningful engagement with the Cultural Heritage, while improving the well-being of the participants as well as their sense of community and place.
An Automatic Approach for the Classification of Ancient Clay Statuettes Based on Heads Features Recognition
(The Eurographics Association, 2019) Scalas, Andreas; Vassallo, Valentina; Mortara, Michela; Spagnuolo, Michela; Hermon, Sorin; Rizvic, Selma and Rodriguez Echavarria, Karina
In recent years, quantitative approaches based on mathematical theories and ICT tools, known under the terms of digital, computational, and virtual archaeology, are more and more involved in the traditional archaeological research. In this paper, we apply shape analysis techniques to 3D digital replicas of archaeological findings to support their interpretation. In particular, our study focuses on a collection of small terracotta figurines from the ancient sanctuary of Ayia Irini, Cyprus, and it aims at re-analysing the material utilising a quantitative approach. We experiment state of the art techniques (meshSIFT and DBSCAN) to cluster statuettes according to the similarity of their heads, to investigate their production process.
Crack Detection in Single- and Multi-Light Images of Painted Surfaces using Convolutional Neural Networks
(The Eurographics Association, 2019) Dulecha, Tinsae Gebrechristos; Giachetti, Andrea; Pintus, Ruggero; Ciortan, Irina; Villanueva, Alberto Jaspe; Gobbetti, Enrico; Rizvic, Selma and Rodriguez Echavarria, Karina
Cracks represent an imminent danger for painted surfaces that needs to be alerted before degenerating into more severe aging effects, such as color loss. Automatic detection of cracks from painted surfaces' images would be therefore extremely useful for art conservators; however, classical image processing solutions are not effective to detect them, distinguish them from other lines or surface characteristics. A possible solution to improve the quality of crack detection exploits Multi-Light Image Collections (MLIC), that are often acquired in the Cultural Heritage domain thanks to the diffusion of the Reflectance Transformation Imaging (RTI) technique, allowing a low cost and rich digitization of artworks' surfaces. In this paper, we propose a pipeline for the detection of crack on egg-tempera paintings from multi-light image acquisitions and that can be used as well on single images. The method is based on single or multi-light edge detection and on a custom Convolutional Neural Network able to classify image patches around edge points as crack or non-crack, trained on RTI data. The pipeline is able to classify regions with cracks with good accuracy when applied on MLIC. Used on single images, it can give still reasonable results. The analysis of the performances for different lighting directions also reveals optimal lighting directions.
Experiencing Art by Means of 3D Printed Replicas: Enriching the Interpretation of Pot Oiseau
(The Eurographics Association, 2019) Samaroudi, Myrsini; Echavarria, Karina Rodriguez; Rizvic, Selma and Rodriguez Echavarria, Karina
Digitally fabricated artefacts or 3D replicas have the potential to enrich the interpretation of cultural assets by enhancing visitors' engagement with collections. However, it is still not well understood how replicas work as interpretative means and what are the actual visitors' attitudes towards them. The contribution of this paper is the development and evaluation of a 3D replica within a realistic interpretative scenario. This research deploys a case study focusing on a 3D printed pot representing an ''authentic'' reproduction of a pot made by Pablo Picasso, currently exhibited at the Brighton Museum and Art Gallery. By detailing the research processes and evaluation results, CH professionals can better perceive the dynamics of replicas as interpretative means within realistic situations; understand their positive contributions and weaknesses; and deploy methods and investigation themes, as presented in this paper. In this way, cultural heritage institutions and especially museums can be assisted when introducing replicas to support their audiences. The developments presented in this paper are part of a larger research project which proposes experience designs or experiential frameworks for the provision of 3D replicas to audiences. Our findings highlight that while there is enormous potential, there is also a need to re-educate people on how to engage with cultural heritage through new interpretative frameworks that are less rigid than those traditionally used in museums.
Lens Calibration for Focus Shift Correction in Close-Range Multispectral Imaging
(The Eurographics Association, 2019) Brenner, Simon; Sablatnig, Robert; Rizvic, Selma and Rodriguez Echavarria, Karina
Multispectral imaging has become a popular tool to reveal properties and structures in cultural heritage objects that are hidden to the human observer. One of the inherent problems of multispectral imaging applications is chromatic aberration. Due to an extended spectral range, the effect appears more pronounced than in conventional photography in the visible spectrum. This paper is concerned with longitudinal chromatic aberrations, i.e. shifts of the focal plane along the principal axis of the camera, as they are hard to correct in post-processing and should be avoided during acquisition. To this end, a calibration scheme to measure the wavelength- and distance-dependent focal shift behavior of a given camera/lens system is proposed, which allows for a mechanical compensation at acquisition time. The approach is demonstrated on a multispectral imaging system for historical manuscript analysis. We show that the application of this compensation approach enables the acquisition of in-focus images in non-visible wavelengths using a lens optimized for the visible spectrum only.
Seismic Simulation on Virtual Reality
(The Eurographics Association, 2019) Fita, Josep Lluis; Besuievsky, Gonzalo; Patow, Gustavo; Rizvic, Selma and Rodriguez Echavarria, Karina
Virtual Reality has been used in Cultural Heritage for providing immersive experiences of recreated and static environments to the final user. However, there is a lack of virtual reality applications for recreating natural phenomena like earthquakes in combination with structural simulations over ancient masonry buildings. In this paper, we describe a solution affordable for all kind of users and designed for running on low-cost devices, where users can have an immersive experience in a virtual environment, where the structural and seismic simulation affects a historical building.
Virtual Reality Experience of Sarajevo War Heritage
(The Eurographics Association, 2019) Rizvic, Selma; Boskovic, Dusanka; Okanovic, Vensada; Kihic, Ivona Ivkovic; Sljivo, Sanda; Rizvic, Selma and Rodriguez Echavarria, Karina
Sarajevo War Tunnel can not be visited any more. It was closed just after the war due to the airport runway security. A small part (20m) can be seen in the Tunnel Museum. The only way to experience passing through this object, crucial for Sarajevo survival during the war, is Virtual Reality (VR). The paper describes the Sarajevo War Tunnel VR project, a virtual cultural heritage application combining VR storytelling about the Sarajevo siege with the VR simulation of the tunnel crossing. The user experience evaluation shows the potential of VR technologies in presentation of dark heritage.

Browse

Browsing GCH 2019 - Eurographics Workshop on Graphics and Cultural Heritage by Subject "Applied computing"

Results Per Page

Sort Options