IEEE Conference on Visual Analytics Science and Technology最新文献

{"title":"Reality Filtering: A Visual Time Machine in Augmented Reality","authors":"M. Zöllner, A. Pagani, Yulian Pastarmov, H. Wuest, D. Stricker","doi":"10.2312/VAST/VAST08/071-077","DOIUrl":"https://doi.org/10.2312/VAST/VAST08/071-077","url":null,"abstract":"We present Reality Filtering, an application that makes it possible to visualize original content like drawings or paintings of buildings and frescos seamlessly superimposed on reality by using filtered augmented reality. This enables simple and inexpensive applications in the cultural heritage and architecture area. The main idea is that the video stream showing the reality is filtered on the fly to acquire the same presentation style as the virtual objects. This allows for a better integration of original historic content and creates the impression of a virtual time journey. The registration of the virtual objects in the video images is provided by a robust 6DOF tracking framework based on two technologies that work in tandem: an initialization step based on Randomized Trees and a frame-to-frame tracking phase based on KLT. For the initialization, we present the novel concept of temporally distributed computational load (TDCL), which is able to automatically detect and register multiple objects while maintaining a constant video frame rate of 20 frames / sec. For mid- to long-range augmentation a pure 2- dimensional tracking with 3DOF is applicable and leads to significant performance gain. The entire application runs in real time on Ultra Mobile PCs.","PeriodicalId":168094,"journal":{"name":"IEEE Conference on Visual Analytics Science and Technology","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128640063","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Real-time Visualisation of Multiple Time dependent Reconstruction Hypotheses for a Cultural Heritage Site","authors":"S. Laycock, R. Laycock, D. Drinkwater, A. M. Day","doi":"10.2312/VAST/VAST08/093-100","DOIUrl":"https://doi.org/10.2312/VAST/VAST08/093-100","url":null,"abstract":"Virtual environments have commonly been used for the dissemination, education and public awareness of cultural heritage, owing to the medium's ability to provide an engaging and interactive exhibit. However, virtual environments have yet to be fully utilised as a tool to enhance the work flow for the archaeologist. When attempting to understand a particular cultural heritage site, a variety of data sources and technologies are employed, resulting in potentially conflicting hypotheses regarding the development of a site through time. It is particularly challenging to quantify the validity of a hypothesis without viewing it within the spatial and temporal context. This paper presents new interactive techniques for the exploration of such alternative interpretations for a large cultural heritage site. To illustrate the utility of the presented approach interpretations of St. Andrew's Monastic complex, Norwich, UK, are considered. The data set comprises of more than two hundred individual components, totalling in excess of five million triangles, ranging from 1258AD to present day. Techniques are presented to process the three dimensional models and utilise consumer level hardware to visualise it in real-time. All navigation is undertaken with a haptic interface, which aside from scene traversal permits different portions of space to be selected and for the objects occupying that space to be regressed or alternative reconstructions to be presented.","PeriodicalId":168094,"journal":{"name":"IEEE Conference on Visual Analytics Science and Technology","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117261719","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"3D Enhanced Model from Multiple Data Sources for the Analysis of the Cylinder Seal of Ibni-Sharrum","authors":"D. Pitzalis, Paolo Cignoni, M. Menu, G. Aitken","doi":"10.2312/VAST/VAST08/079-084","DOIUrl":"https://doi.org/10.2312/VAST/VAST08/079-084","url":null,"abstract":"In this paper we present the result of the integration of multiple data sources of different 3D acquisition techniques. These acquisitions have been done in order to create a new way to document works of art that have been applied to the \"Cylinder seal of Ibni-Sharrum\". \u0000 \u0000X-ray tomography has been used to reveal the exact position of inclusions and the presence fissure in the mineral structure; optical micro topography gives the prints of the surface of the seal with a unparallelled precision of up to 0.1μm. Finally a lower resolution 3D model obtained via photogrammetry has been used as a starting point where the tomographic and micro topographic data sets have been superimposed and integrated without precision loss. Furthermore, the textures obtained from HDR photographs has been registered and merged onto the high resolution mesh. These methods have pros and cons that will be discussed and the final obtained model will be the sum of all the complementary cons. \u0000 \u0000The final result of this interdisciplinary investigation will help the curator to better describe the fabrication techniques used in order to achieve the final object and a contemporary artist to do a reproduction of the cylinder at a scale of 1000:1.","PeriodicalId":168094,"journal":{"name":"IEEE Conference on Visual Analytics Science and Technology","volume":"107 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116373761","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Color Enhancement for Rapid Prototyping","authors":"Paolo Cignoni, E. Gobbetti, R. Pintus, Roberto Scopigno","doi":"10.2312/VAST/VAST08/009-016","DOIUrl":"https://doi.org/10.2312/VAST/VAST08/009-016","url":null,"abstract":"We propose to exploit the color capabilities of recent rapid prototyping hardware devices to enhance the visual appearance of reproduced objects. In particular, by carefully pre-computing surface shading, we are able to counterbalance the sub-surface scattering (SSS) effects that hinder the perception of fine surface details. As a practical result, we are able to reproduce small scale copies of cultural heritage artifacts with an increased readability of the tiniest features and particulars, without requiring manual post-reproduction interventions or hand painting.","PeriodicalId":168094,"journal":{"name":"IEEE Conference on Visual Analytics Science and Technology","volume":"56 6","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134127361","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Virtual Exploration of Underwater Archaeological Sites: Visualization and Interaction in Mixed Reality Environments","authors":"Mahmoud Haydar, Madjid Maidi, D. Roussel, M. Mallem, P. Drap, Kim Bale, P. Chapman","doi":"10.2312/VAST/VAST08/141-148","DOIUrl":"https://doi.org/10.2312/VAST/VAST08/141-148","url":null,"abstract":"This paper describes the ongoing developments in Photogrammetry and Mixed Reality for the Venus European project (Virtual ExploratioN of Underwater Sites, http://www.venus-project.eu). The main goal of the project is to provide archaeologists and the general public with virtual and augmented reality tools for exploring and studying deep underwater archaeological sites out of reach of divers. These sites have to be reconstructed in terms of environment (seabed) and content (artifacts) by performing bathymetric and photogrammetric surveys on the real site and matching points between geolocalized pictures. The base idea behind using Mixed Reality techniques is to offer archaeologists and general public new insights on the reconstructed archaeological sites allowing archaeologists to study directly from within the virtual site and allowing the general public to immersively explore a realistic reconstruction of the sites. Both activities are based on the same VR engine but drastically differ in the way they present information. General public activities emphasize the visually and auditory realistic aspect of the reconstruction while archaeologists activities emphasize functional aspects focused on the cargo study rather than realism which leads to the development of two parallel VR demonstrators. This paper will focus on several key points developed for the reconstruction process as well as both VR demonstrators (archaeological and general public) issues. The first developed key point concerns the densification of seabed points obtained through photogrammetry in order to obtain high quality terrain reproduction. The second point concerns the development of the Virtual and Augmented Reality (VR/AR) demonstrators for archaeologists designed to exploit the results of the photogrammetric reconstruction. And the third point concerns the development of the VR demonstrator for general public aimed at creating awareness of both the artifacts that were found and of the process with which they were discovered by recreating the dive process from ship to seabed.","PeriodicalId":168094,"journal":{"name":"IEEE Conference on Visual Analytics Science and Technology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130614088","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Heritage Pieces Integration in Autonomous Augmented Reality Systems: Key problems and Solutions","authors":"Alberto Martín, E. Pérez, S. Salamanca, P. Merchán, A. Adán","doi":"10.2312/VAST/VAST08/133-140","DOIUrl":"https://doi.org/10.2312/VAST/VAST08/133-140","url":null,"abstract":"Nowadays virtual reality users and professionals demand a growing quality and a higher degree of realism in development and applications. Among these technologies augmented reality systems stand out due to their complexity and possibilities, having open current problems from the digitalization process to the accurate insertion of digital information in the reality. This paper is addressed to present solutions to key problems that arise in these environments which the 3D Computer Vision and Robotics (UCLM) group has been working on over the last two years. The final objective is to extend and complete the real visual information perceived by the user superimposing three-dimensional information synthesized with a high degree of realism. Our research is focused on two aspects that converge towards the same objective. The first objective is to carry out a reverse engineering process on valuable heritage pieces with the aim of obtaining complete and realistic models. This is a field where current technology itself is not capable of yielding a complete and satisfactory answer. Here we present solutions to two of the most important issues which many researchers continue working on: automatic filling holes in 3D meshes and color integration in the geometrical model through view fusion techniques. The second objective concerns the problem of the insertion of virtual models in the image captured by one or more cameras. Current display as well as positioning devices solves most of the AR problems in controlled environments. Nevertheless, a more interesting matter, on which notable research efforts are being carried out, are focused on the positioning aspects in external and non controlled environments. In this paper, we describe an efficient solution with low computational cost that allows us to carry out autonomous augmented reality sessions in free environments.","PeriodicalId":168094,"journal":{"name":"IEEE Conference on Visual Analytics Science and Technology","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131841009","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Semantic Web, Digital Libraries and the future of Cultural Heritage","authors":"A. Felicetti, H. Mara","doi":"10.2312/VAST/VAST08/117-123","DOIUrl":"https://doi.org/10.2312/VAST/VAST08/117-123","url":null,"abstract":"This paper provides an overview regarding the application of the Semantic Web oriented technologies we have developed as part of the EPOCH and AMA projects for Cultural Heritage Digital Libraries. We wanted to enhance interoperability among diverse archives and to make disperse digital information available through the web in a standard format. Our toolset includes an application for mapping existing archive schemas to ontology schemas (AMA Mapping Tool), a tool to recursively markup unstructured text documents (AMA Text Tool) and a Semantic Web Database able to store, query and return simple and complex semantic information (MAD). We used the CIDOC-CRM core ontology to define the entities we dealt with and to describe concepts and relations among them.","PeriodicalId":168094,"journal":{"name":"IEEE Conference on Visual Analytics Science and Technology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128423307","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Automatic Reconstruction of Virtual Heritage Sites","authors":"Nuno Rodrigues, Luís Magalhães, João-Paulo Moura, A. Chalmers","doi":"10.2312/VAST/VAST08/039-046","DOIUrl":"https://doi.org/10.2312/VAST/VAST08/039-046","url":null,"abstract":"The virtual reconstruction of heritage sites has been the focus of many projects. These typically involve significant use of manual reconstruction techniques, and thus a great deal of human effort to create the virtual structures. Also, often, there is not sufficient physical evidence to recreate these structures precisely as they may have been in the past. \u0000 \u0000To address these issues a domain specific modelling method for the automatic generation of virtual heritage structures is presented in this paper. The method is guided by heritage knowledge about the construction rules of heritage structures, encoded in a formal grammar, and may be used to create new structures automatically. The case study entails the automatic reconstruction of the archaeological site of Conimbriga, in Portugal, which contains the ruins of an ancient city of the Roman Empire. The results show the generation of a virtual reconstruction of a particular house, the House of the Skeletons, which had an important relevance to the city because of its architecture.","PeriodicalId":168094,"journal":{"name":"IEEE Conference on Visual Analytics Science and Technology","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130883485","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Authoring Tools for Archaeological Mobile Guides","authors":"M. Linaza, Isabel Torre, R. Beusing, Assunta Tavernise, M. Etz","doi":"10.2312/VAST/VAST08/047-054","DOIUrl":"https://doi.org/10.2312/VAST/VAST08/047-054","url":null,"abstract":"Mobile tourist guides are increasingly useful once the visitors are in the archaeological sites. They are capable of providing huge amount of information about the sites. As it is easily understood, the selection of such information is a task that must be conducted by cultural institutions. Therefore, this paper aims at simplifying the provision of useful multimedia information in a user-friendly and attractive way. In order to achieve this goal, an authoring tool for non-expert users has been implemented, so that they will be able to contribute to mobile guides independently from the structure and the type and formats of the contents that will be added. The tool includes the possibility of defining several layers to provide the information with a split architecture, so that the creator of the guide can decide which contents to include and the languages in which the guide will be provided. This tool has been validated in several archaeological sites in order to build interactive multilingual mobile guides based on the J2ME standard.","PeriodicalId":168094,"journal":{"name":"IEEE Conference on Visual Analytics Science and Technology","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117145935","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Peer to Peer Network Environment for Optimized Digital Rights Management of Digital Cultural Heritage","authors":"D. Tsolis","doi":"10.2312/VAST/VAST08/033-037","DOIUrl":"https://doi.org/10.2312/VAST/VAST08/033-037","url":null,"abstract":"As a general protection measure for copyright violations through digital technologies including peer to peer (P2P), copyright owners often uses Digital Rights Management (DRM) techniques to encrypt and watermark content or otherwise restrict access, totally blocking digital content to be accessed through the Internet and the P2P infrastructure. This paper claims that DRM and P2P can be quite complementary. Specifically, a P2P infrastructure is presented which allows broad digital content exchange while on the same time supports copyright protection and management through DRM technologies.","PeriodicalId":168094,"journal":{"name":"IEEE Conference on Visual Analytics Science and Technology","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125636709","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}