IEEE Conference on Visual Analytics Science and Technology最新文献

{"title":"Parsing architecture within plan drawings with application to medieval castles and fortresses","authors":"A. Willis, Yunfeng Sui, K. Galor","doi":"10.2312/VAST/VAST09/017-024","DOIUrl":"https://doi.org/10.2312/VAST/VAST09/017-024","url":null,"abstract":"Plan drawings are graphical documents critical to the documentation of architectural features at historic sites. These drawings include important geometric information such as the location, shape, and size of architectural features, which, for decaying or collapsed structures, may be the only existing records of the intact structure. This paper discusses an algorithm that estimates the geometry and semantic interpretation of architectural structures from a plan drawing. The estimated values are used to automatically generate a 3D structure using the estimated semantic labels of structural elements in the plan drawing. We demonstrate the utility of this approach by parsing several plan drawings of medieval castles and fortresses and generating 3D reconstructions of these structures and detail typical circumstances that prevent the system from generating a valid reconstruction. Since the 3D model is derived from plan drawings where the architectural contour is well-defined, the approach automatically provides near-pixel level accuracy at all locations which is very difficult and time-consuming to guarantee when manually constructing 3D models from the same drawing. Hence, these automatically-produced models can provide unprecedented accuracy to the in-situ remains not feasible with conventional manual model-building techniques. While this article represents initial work on this topic with limited scope (castles/fortresses), we envision that subsequent enhancements to this method will be a valuable tool for efficiently generating accurate 3D models for many different historic structures.","PeriodicalId":168094,"journal":{"name":"IEEE Conference on Visual Analytics Science and Technology","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114644770","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":"Analysis of document snippets as a basis for reconstruction","authors":"Markus Diem, Florian Kleber, Robert Sablatnig","doi":"10.2312/VAST/VAST09/101-108","DOIUrl":"https://doi.org/10.2312/VAST/VAST09/101-108","url":null,"abstract":"In Archaeography, Philology, Forensics, and related research areas fragments of documents are very common. These fragments are the basis for the subsequent reconstruction process, where the goal is to make the original information spread over several fragments visible again. The fragments can originate from paper shredders, hand torn pages or in the case of ancient manuscripts this is due to bad storage conditions, or other destroying facts. So we can distinguish between an \"on-purpose\" destruction because the information contained on the pages should not be readable anymore or a \"time-induced\" destruction for ancient documents which is unintentional. Nevertheless the reconstruction of document fragments is an interesting research question. This paper shows a preliminary step for the page reconstruction namely the automatic orientation of snippets in order to eliminate the rotation in the later reconstruction (puzzling) process. Furthermore features like paper color and the color of the inks used are analyzed as a pre-classification step to find matching snippets. In the case of \"on-purpose\" destruction there is no a-priori information on which fragment belongs to which page which makes a reconstruction based on thousands of fragments from unknown sources difficult since the combinatorial effort explodes (NP-hardness). Preliminary results on orientation and color segmentation are presented and show that these pre-processing steps can be performed reliably and can be used for reconstruction and snippet classification.","PeriodicalId":168094,"journal":{"name":"IEEE Conference on Visual Analytics Science and Technology","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122275623","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":"The virtual reconstruction and daylight illumination of the Panagia Angeloktisti","authors":"J. Happa, A. Artusi, Piotr Dubla, Thomas Bashford-Rogers, K. Debattista, Vedad Hulusic, A. Chalmers","doi":"10.2312/VAST/VAST09/049-056","DOIUrl":"https://doi.org/10.2312/VAST/VAST09/049-056","url":null,"abstract":"High-fidelity virtual reconstructions can be used as accurate 3D representations of historical environments. After modelling the site to high precision, physically-based and historically correct light models must be implemented to complete an authentic visualisation. Sunlight has a major visual impact on a site; from directly lit areas to sections in deep shadow. The scene illumination also changes substantially at different times of the day. In this paper we present a virtual reconstruction of the Panagia Angeloktisti; a Byzantine church on Cyprus. We investigate lighting simulations of the church at different times of the day, making use of Image-Based Lighting, using High Dynamic Range Environment Maps of photographs and interpolated spectrophotometer data collected on site. Furthermore, the paper also explores the benefits and disadvantages of employing unbiased rendering methods such as Path Tracing and Metropolis Light Transport for cultural heritage applications.","PeriodicalId":168094,"journal":{"name":"IEEE Conference on Visual Analytics Science and Technology","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133104260","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":"Last house on the hill: digitally remediating data and media for preservation and access","authors":"M. A. López, R. Tringham, C. Perlingieri","doi":"10.2312/VAST/VAST09/109-116","DOIUrl":"https://doi.org/10.2312/VAST/VAST09/109-116","url":null,"abstract":"The idea of embedding, interweaving, entangling and otherwise linking the data and media from archaeological excavations with their interpretation and meaningful presentation in an open access sharable platform has long been an ambition of those of us working in the digital documentation of archaeological research and the public presentation of cultural heritage. Formidable barriers still exist to making it possible for projects to achieve these aims, ranging from intellectual property concerns to providing commitments to the long-term sustainability of the digital content. Working in collaboration with the contributors, archaeological project managers, publishers and information technologists, we devised a content licensing agreement that makes it possible for the primary research media and data, combined with the monograph texts, to be freely and openly accessible in perpetuity.\u0000 The aim of our project, Last House on the Hill (LHotH), is to holistically reconstitute the rich multimedia and primary research data with the impressive texts of the monograph, the printed final report of the Berkeley Archaeologists at Çatalhöyük (BACH) project, in which a team from UC Berkeley excavated a group of Neolithic 9000-year old buildings at this famous cultural heritage location in Central Anatolia, Turkey. The Last House on the Hill brings together the published text, complete project database (including all media formats such as photographs, videos, maps, line drawings), related websites, data and media outside the direct domain of the BACH project, and recontextualised presentations of the data as remixes, movies, and other interpretive works by BACH team members and many others. We are achieving this through an event-centered, CIDOC-CRM compatible implementation ontology, expressed with the open source Omeka web-publishing platform, providing open access, transparency and open-endedness to what is normally the closed and final process of monograph publication.\u0000 This paper describes the strategy, goals, architecture and implementation for the project, emphasizing the novel and innovative approaches that were required to make the project successful.","PeriodicalId":168094,"journal":{"name":"IEEE Conference on Visual Analytics Science and Technology","volume":"270 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127935356","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":"Optimized image sampling for view and light interpolation","authors":"P. Gunawardane, Oliver Wang, Steve Scher, Ian Rickard, James Davis, T. Malzbender","doi":"10.2312/VAST/VAST09/093-100","DOIUrl":"https://doi.org/10.2312/VAST/VAST09/093-100","url":null,"abstract":"Accurate virtual reconstruction of real world objects has long been a desired goal of image-based computer graphics. Usually this involves a lengthy capture process where an object is photographed from different viewpoints and illumination conditions. Using this collection of input images, we can now re-render the object from any viewing angle or lighting condition. However, acquiring a dense sampling of both the lighting and view space is time consuming. We carry out an analysis on this combined lighting and view space to find the optimal sampling given a restricted image budget. We also analyze the order of interpolation and find that improved results are obtained by interpolating first in viewpoint and second in lighting, the reverse of the usual order.","PeriodicalId":168094,"journal":{"name":"IEEE Conference on Visual Analytics Science and Technology","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131807892","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":"Location-based mobile applications to experience collective memory","authors":"M. Linaza, Isabel Torre, Y. Cobos, Miren Koro Campos, Mauro Peñalba, A. Labandibar","doi":"10.2312/VAST/VAST09/001-008","DOIUrl":"https://doi.org/10.2312/VAST/VAST09/001-008","url":null,"abstract":"Mobile learning technologies can provide an important added-value to cultural tourism by supporting visitors in their direct field experience. Providing engaging experiences is a key factor to the success of educational and entertainment products. We have researched how mobile gaming can help tourists and citizens enhancing their experience when interacting with Cultural Heritage. GeoJoko aims at designing and implementing context-based mobile games that will allow users to enhance their experience about Cultural Heritage and collective memory. The prototype includes location technologies that provide the location of each of the players in real time. Contents can be both streamed in real time over the infrastructure provided by the Public Administration within the \"wireless cities\" concept or downloaded to the mobile device of the player. This approach is innovative since it exploits the challenge of location-based serious games in order to implement a mobile learning service that supports the user understanding the elements of Cultural Heritage.","PeriodicalId":168094,"journal":{"name":"IEEE Conference on Visual Analytics Science and Technology","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116275853","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":"Interaction with replicas of small pieces: using complementary technologies to maximize visitors' experience","authors":"P. Figueroa, Eduardo Londoño, P. Boulanger, F. Prieto, Mauricio Coral, J. Borda, Felipe Vega, Diego Restrepo","doi":"10.2312/VAST/VAST09/133-140","DOIUrl":"https://doi.org/10.2312/VAST/VAST09/133-140","url":null,"abstract":"Current technologies for digitizing artifacts allow us to create compelling virtual installations, in which visitors learn about them through playing and exploring virtual proxies. However, different technologies enhance certain types of information and preclude other usages. In this paper, we show how one can create complementary installations in order to enhance the use of available information of small artifacts. Our case study is a set of small gold artifacts at the Gold Museum in Bogota, Colombia. We collected from each piece high-resolution 3D scans at different levels of detail, high resolution images, sound, text, and contextual images. With this information, we created a traditional multimedia installation for the computer room at the Museum, a web site for remote visitors through the Internet, and finally a novel haptic and stereo display interface that allows visitors to touch, observe in stereo, locate themselves inside the Museum, and hear the sound of an artifact when it is struck with a virtual stylus. In this paper, we show how one can develop these experiences and how they complement each other. We will also present an early evaluation of their strengths and weaknesses.","PeriodicalId":168094,"journal":{"name":"IEEE Conference on Visual Analytics Science and Technology","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127782776","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":"Recreating early Islamic glass lamp lighting","authors":"Joseph T. Kider, Rebecca L. Fletcher, Nancy Xiaonan Yu, R. Holod, A. Chalmers, N. Badler","doi":"10.2312/VAST/VAST09/033-040","DOIUrl":"https://doi.org/10.2312/VAST/VAST09/033-040","url":null,"abstract":"Early Islamic light sources are not simple, static, uniform points, and the fixtures themselves are often combinations of glass, water, fuel and flame. Various physically based renderers such as Radiance are widely used for modeling ancient architectural scenes; however they rarely capture the true ambiance of the environment due to subtle lighting effects. Specifically, these renderers often fail to correctly model complex caustics produced by glass fixtures, water level, and fuel sources. While the original fixtures of the 8th through 10th century Mosque of Cordoba in Spain have not survived, we have applied information gathered from earlier and contemporary sites and artifacts, including those from Byzantium, to assume that it was illuminated by either single jar lamps or supported by polycandela that cast unique downward caustic lighting patterns which helped individuals to navigate and to read. To re-synthesize such lighting, we gathered experimental archaeological data and investigated and validated how various water levels and glass fixture shapes, likely used during early Islamic times, changed the overall light patterns and downward caustics. In this paper, we propose a technique called Caustic Cones, a novel data-driven method to \"shape\" the light emanating from the lamps to better recreate the downward lighting without resorting to computationally expensive photon mapping renderers.Additionally, we demonstrate on a rendering of the Mosque of Cordoba how our approach greatly benefits archaeologists and architectural historians by providing a more authentic visual simulation of early Islamic glass lamp lighting.","PeriodicalId":168094,"journal":{"name":"IEEE Conference on Visual Analytics Science and Technology","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130131779","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":"Structural and lighting models for the Minoan cemetery at Phourni, crete","authors":"Constantinos Papadopoulos, G. Earl","doi":"10.2312/VAST/VAST09/057-064","DOIUrl":"https://doi.org/10.2312/VAST/VAST09/057-064","url":null,"abstract":"The importance of death to the living is of interest to scholars in a range of disciplines. This paper describes a computer-based research project undertaken to create a series of alternative readings of the dataset from the Minoan cemetery at Phourni, Crete. This attempted to evaluate the tombs' architecture, use, visual impact, their capacity as well as the contribution of illumination to their interior, by using computer graphic methodologies. However, since the software deployed is primarily developed for use in other fields, there are certain limitations and difficulties for a virtual reconstruction of such an archaeological site, which can prevent production of a model that is accurate in every detail. This paper will discuss the results and these constraints. It will also address problems and innovative components, suggesting potential solutions and recommending additional work for the future.","PeriodicalId":168094,"journal":{"name":"IEEE Conference on Visual Analytics Science and Technology","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127838518","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":"Augmented real-time virtual environment of the church of the holy trinity in mostar","authors":"Belma Ramic-Brkic, Zana Karkin, Aida Sadzak, Dino Selimovic, S. Rizvić","doi":"10.2312/VAST/VAST09/141-148","DOIUrl":"https://doi.org/10.2312/VAST/VAST09/141-148","url":null,"abstract":"Digital storytelling significantly improves the immersion of the users into virtual environments. The perception of the information contained in the digital story is better perceived if the story is told by a real avatar, rather than the animated character. The paper describes how we improved the approach of inserting the real avatar recorded against a green screen using a sequence of images with an alpha channel in an X3D real time virtual environment.","PeriodicalId":168094,"journal":{"name":"IEEE Conference on Visual Analytics Science and Technology","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125726715","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}