IEEE Conference on Visual Analytics Science and Technology最新文献_第6页

Verification and Acceptance Tests for High Definition 3D Surface Scanners 高清晰度3D表面扫描仪的验证和验收测试

IEEE Conference on Visual Analytics Science and Technology Pub Date : 2010-09-21 DOI: 10.2312/VAST/VAST10/009-016

C. Bathow, B. Breuckmann, Roberto Scopigno

{"title":"Verification and Acceptance Tests for High Definition 3D Surface Scanners","authors":"C. Bathow, B. Breuckmann, Roberto Scopigno","doi":"10.2312/VAST/VAST10/009-016","DOIUrl":"https://doi.org/10.2312/VAST/VAST10/009-016","url":null,"abstract":"High definition three-dimensional (3D) surface scanners, based on structured light or laser light section techniques, have found a wide range of applications, especially for technical and industrial applications (mostly for measuring and inspection tasks). Since about 10 years, systems adapted for the requirements of arts and Cultural Heritage (CH) support 3D digitization of art objects. Although the use of digital 3D models in CH is rapidly growing, many of the users are not yet completely familiar with terminology and all details of technical specifications. As most of the users are practitioners there is sometimes only little experience with terms as data quality, accuracy, resolution, measurement uncertainty, especially because these terms are used in very different ways, in manuals and brochures of scanner manufacturers as well as by authors of scientific papers. Moreover, the objective of many applications is digitization instead of measurement; therefore, many users are not even aware, that they nevertheless have to care about metrology issues such as verification and acceptance tests of the used equipment to get a reliable scanning result. In its first part, the paper will give an overview the fundamentals of data acquisition and data processing, presenting also advantages and benefits, limitations and drawbacks as well as correlations between different performance parameters of high definition 3D surface scanners. Our goal is also to rectify a number of typical misunderstandings and to clarify related terms and definitions. In its second part, the paper will concentrate on verification and acceptance tests of high definition 3D scanners, reviewing the German guidelines VDI/VDE 2634/2 and proposing some preliminary extensions required to cope better with the CH domain.","PeriodicalId":168094,"journal":{"name":"IEEE Conference on Visual Analytics Science and Technology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130020894","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}

引用次数: 13

GigaMesh and Gilgamesh ? 3D Multiscale Integral Invariant Cuneiform Character Extraction 吉伽美什和吉尔伽美什?三维多尺度积分不变楔形字符提取

IEEE Conference on Visual Analytics Science and Technology Pub Date : 2010-09-21 DOI: 10.2312/VAST/VAST10/131-138

H. Mara, S. Krömker, S. Jakob, B. Breuckmann

{"title":"GigaMesh and Gilgamesh ? 3D Multiscale Integral Invariant Cuneiform Character Extraction","authors":"H. Mara, S. Krömker, S. Jakob, B. Breuckmann","doi":"10.2312/VAST/VAST10/131-138","DOIUrl":"https://doi.org/10.2312/VAST/VAST10/131-138","url":null,"abstract":"As assyriologists have to handle tremendous amounts of important documents of ancient history written in cuneiform script, like the epic of Gilgamesh, we are developing an efficent system to support their daily tasks. Previous projects demonstrated the application of holography and early close-range 3D scanners for this task. Based on experiences from our previous projects in archaeology, we are focusing on processing the vast amounts of data of high resolution 3D models from todays close-range 3D scanners like the Breuckmann smartSCAN-3D-HE. \u0000 \u0000The presented method exploits the high-resolution of the 3D models to extract the impressed characters as well as other features like fingerprints. Previous work typically used rendering techniques from computer graphics to visualize the characters, which then had to be processed manually. More recent approaches use methods from differential geometry for detection and extraction of coarse contour lines. These methods are computationally fast, and well-established for industrial application, but cannot cover the variations of human handwriting in form of the – wedge shaped – cuneiform script. To overcome the variations in size of the wedges, we choose a multiscale approach using integrating geometry. A transformation invariant function is achieved by calculating the volumes of multiple concentric spheres intersecting the volume below the 3D model's surface at each point. Due to this multiscale approach, this function is represented by the so-called feature vector. By classifying these feature vectors using auto-correlation, our system – called GigaMesh – can automatically extract characters, requiring only one parameter: the approximated line (wedge) width in mm. \u0000 \u0000Results are shown for cuneiform tablets from the collections of the Assyriologie Heidelberg as well as from the Uruk-Warka Sammlung. Finally an outlook regarding character (en)coding and integration into related projects like the Cuneiform Digital Library Initiative (CDLI) is given.","PeriodicalId":168094,"journal":{"name":"IEEE Conference on Visual Analytics Science and Technology","volume":"512 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130112122","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}

引用次数: 64

ViSMan: an Open-Source Visualization Framework for Virtual Reconstructions and Data Management in Archaeology ViSMan:考古学中虚拟重建和数据管理的开源可视化框架

IEEE Conference on Visual Analytics Science and Technology Pub Date : 2010-09-21 DOI: 10.2312/VAST/VAST10/047-053

T. Diamanti, P. Blasco, Antonella Guidazzoli, Maria Sebastián López, Elena Toffalori

{"title":"ViSMan: an Open-Source Visualization Framework for Virtual Reconstructions and Data Management in Archaeology","authors":"T. Diamanti, P. Blasco, Antonella Guidazzoli, Maria Sebastián López, Elena Toffalori","doi":"10.2312/VAST/VAST10/047-053","DOIUrl":"https://doi.org/10.2312/VAST/VAST10/047-053","url":null,"abstract":"This paper aims at analyzing some case-studies in Virtual Archaeology where 3d reconstructions have been used as a tool for visualization and spatial organization of structured archaeological data. \u0000 \u0000ViSMan (Visual Scenarios MANager) is an open source framework developed at Cineca for the visualization of scientific virtual environments. It has been applied to several Virtual Archaeology projects, thus allowing advanced 3d visualization features, switching between models, and linking to external contents such as images, text files, web urls; data linked through the models are visualized by the user in a new frame, overlapping or separated from the browser. \u0000 \u00001. VisArq. 1.0 is an online geo-database of the archaeological heritage of the area around Zaragoza, Spain; the whole territory is visualized in ViSMan as a 3d DEM (Digital Elevation Model); the model displays the distribution of archaeological sites for which some kind of external reference is available; access is provided to different types of data by means of interactive HTML pages. \u0000 \u00002: DHER-ViSMan application (running off-line) encloses both photo-realistic and schematic reconstructions of roman houses in Herculaneum, and explores different levels of data, ranging from the regional area to a single wall-painting; each model contains ''Nodes'', which provide access to a rich archive of data, managed through a relational database.","PeriodicalId":168094,"journal":{"name":"IEEE Conference on Visual Analytics Science and Technology","volume":"600 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131646769","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}

引用次数: 5

WreckSight: Revealing our Submerged Maritime Heritage 沉船景观:揭示我们的水下海洋遗产

IEEE Conference on Visual Analytics Science and Technology Pub Date : 2010-09-21 DOI: 10.2312/VAST/VAST10/039-045

C. Rowland, John Anderson

{"title":"WreckSight: Revealing our Submerged Maritime Heritage","authors":"C. Rowland, John Anderson","doi":"10.2312/VAST/VAST10/039-045","DOIUrl":"https://doi.org/10.2312/VAST/VAST10/039-045","url":null,"abstract":"This paper describes WreckSight, an interactive application for viewing aesthetically considered, accurate, 3D visualisations of historic shipwrecks on the seabed. Maritime heritage sites around the world, especially historic shipwrecks, are typically difficult to access by the general public. In many cases they are beyond the reach of traditional maritime archaeological investigation due to depth and low visibility. Historically significant wrecks have been successfully raised to the surface for research and public exposition in recent years. The Mary Rose raised in 1982 from Portsmouth harbour (UK) and the wreck of the US Civil War submarine Hunley recovered in 2000 from Charleston Bay, are on public display along with many artefacts recovered from the wrecks. However, the majority of historic shipwrecks lie at the site of their sinking, on the seabed, hidden from the public view. Recent improvements in multibeam sonar technologies have resulted in new opportunities to gather very high definition, 3D point cloud data from submerged historic shipwreck sites, therefore offering the potential to create highly accurate 3D images for public exposition. Traditional maritime archaeological methods for displaying this data can be improved by addressing a number of known problems. These are: \u0000 \u0000· Gaps between points allow data to show through from the other side of the wreck, potentially misrepresenting the structure of the wreck. \u0000 \u0000· Point cloud data contains no inherent colour information. Traditional display methods apply arbitrary colour ramps to the data which often does not enhance the viewer's interpretation of the wreck. \u0000 \u0000· Points are rendered at the same size regardless of their distance from the viewer \u0000 \u0000The WreckSight application resolves these problems by utilising occlusion objects, locally oriented colour ramps (Locoramps) and digital cinematography. This 3D visualisation tool also has applications beyond heritage, e.g. in the marine salvage industry, recreational dive planning and environmental management.","PeriodicalId":168094,"journal":{"name":"IEEE Conference on Visual Analytics Science and Technology","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128336646","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}

引用次数: 3

Analyzing Fracture Patterns in TheranWall Paintings 分析TheranWall Paintings的断裂模式

IEEE Conference on Visual Analytics Science and Technology Pub Date : 2010-09-21 DOI: 10.2312/VAST/VAST10/071-078

Hijung Valentina Shin, C. Doumas, T. Funkhouser, S. Rusinkiewicz, K. Steiglitz, A. Vlachopoulos, T. Weyrich

引用次数: 21

Natural Lighting, Gilts and Polychromy of Notre-Dame de Paris Cathedral 巴黎圣母院大教堂的自然光、镀金和多色

IEEE Conference on Visual Analytics Science and Technology Pub Date : 2010-09-21 DOI: 10.2312/VAST/VAST10/063-070

P. Callet, S. Dumazet, Christophe Leclercq, C. Politi

{"title":"Natural Lighting, Gilts and Polychromy of Notre-Dame de Paris Cathedral","authors":"P. Callet, S. Dumazet, Christophe Leclercq, C. Politi","doi":"10.2312/VAST/VAST10/063-070","DOIUrl":"https://doi.org/10.2312/VAST/VAST10/063-070","url":null,"abstract":"Lighting either natural or not in the european medieval architecture (roman period) is studied and simulated around a special and famous example. \"Notre-Dame de Paris\" cathedral and its polychromy are studied for many years and, today the remains of polychromy are very reduced. This prestigious monument is then a unique opportunity to study the complex relationships between light, paint and gilt. Monumental polychromy of the religious buidings is now well established and some attempts exist for retrieving a kind of optical effects well controlled in the medieval era. An interdisciplinary study which derived from the french project TerraNumerica allowed to value a historical hypothesis about the possible optical role of gilts. Thanks to the simulation of a global illumination in spectral rendering operating with the photon mapping algorithm, a new interpretation of polychromy effects is proposed, including the lightguide effect produced by the gilts. Many measurements on formulated polychrome samples and spectrophotometric captures concerning natural lighting at sunset were made to validate that new hypothesis. The obtained results guided the interdisciplinary team on a new focus on the polychromy restitution of the medieval buildings and monuments. It became quite evident that the medieval sculptor brought a very high and accurate mastership in lighting. Playing with the symbolic and colored light for illuminating the Galerie des Rois (the kings of Judah and not the kings of France) he offered to the christian people a very \"special effect\" for the last minutes of the day time. Physically based simulations presented here show a brand new hypothesis concerning the optical role of gilts.","PeriodicalId":168094,"journal":{"name":"IEEE Conference on Visual Analytics Science and Technology","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121860413","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}

引用次数: 9

Interactive remote exploration of massive cityscapes 大规模城市景观的交互式远程探索

IEEE Conference on Visual Analytics Science and Technology Pub Date : 2009-09-22 DOI: 10.2312/VAST/VAST09/009-016

Marco Di Benedetto, Paolo Cignoni, F. Ganovelli, E. Gobbetti, F. Marton, Roberto Scopigno

引用次数: 20

A point-based system for local and remote exploration of dense 3D scanned models 基于点的密集三维扫描模型局部和远程探测系统

IEEE Conference on Visual Analytics Science and Technology Pub Date : 2009-09-22 DOI: 10.2312/VAST/VAST09/025-032

F. Bettio, E. Gobbetti, F. Marton, A. Tinti, E. Merella, Roberto Combet

{"title":"A point-based system for local and remote exploration of dense 3D scanned models","authors":"F. Bettio, E. Gobbetti, F. Marton, A. Tinti, E. Merella, Roberto Combet","doi":"10.2312/VAST/VAST09/025-032","DOIUrl":"https://doi.org/10.2312/VAST/VAST09/025-032","url":null,"abstract":"We present a client-server framework for network distribution and real-time point-based rendering of large 3D models on commodity graphics platforms. Model inspection, based on a one-touch interface, is enriched by a bidirectional hyperlink system which provides access to multiple layers of multimedia contents linking different parts of the 3D model many information sources. In addition to view and light control, users can perform simple 3D operations like angle, distance and area measurements on the 3D model. An authoring tool derived from the basic client allows users to add multimedia content to the model description. Our rendering method is based on a coarse grained multiresolution structure, where each node contains thousands of point samples. At runtime, a view-dependent refinement process incrementally updates the current GPU-cached model representation from local or remote out-of-core data. Vertex and fragment shaders are used for high quality elliptical sample drawing and a variety of shading effects. The system is demonstrated with examples that range from documentation and inspection of small artifacts to exploration of large sites, in both a museum and a large scale distribution setting.","PeriodicalId":168094,"journal":{"name":"IEEE Conference on Visual Analytics Science and Technology","volume":"20 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":"122463515","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}

引用次数: 24

Reconstruction of large cultural heritage sites from archived maps 根据存档地图重建大型文化遗产

IEEE Conference on Visual Analytics Science and Technology Pub Date : 2009-09-22 DOI: 10.2312/VAST/VAST09/041-048

R. Laycock, S. Laycock, A. M. Day

{"title":"Reconstruction of large cultural heritage sites from archived maps","authors":"R. Laycock, S. Laycock, A. M. Day","doi":"10.2312/VAST/VAST09/041-048","DOIUrl":"https://doi.org/10.2312/VAST/VAST09/041-048","url":null,"abstract":"Reconstructions of large cultural heritage sites, at multiple time periods, facilitate public awareness, enable the visualisation of regeneration proposals, and assist archaeologists in establishing the validity of a particular hypothesis within context. This paper focuses on the reconstruction of sites that no longer exist, where archived cartography and archaeologist's sketches provide an invaluable resource conveying the layout of an area. Whilst three-dimensional models are used in a broad range of applications their construction typically involves a labour intensive process and this paper presents a set of techniques to aid the reconstruction of environments from maps. In particular, the approach considers that an environment will exhibit a substantial amount of similarity, which is exploited to reduce the modelling time. The concept of similarity permits a dominant set of k building footprints to be identified from a map. A set of models representing the k dominant footprints are created and, based upon both the image based and geometry based metrics discussed in this paper, are aligned to the closest matching footprint in the archived map. Any building that is not sufficiently close to any of the k dominant footprints is labelled as being visually distinct and requires further modelling. To evaluate the technique a reconstruction of 19th Century Koblenz is undertaken, where 2300 building footprints are extracted, classified and aligned to one of 51 dominant building footprints in under fifteen minutes.","PeriodicalId":168094,"journal":{"name":"IEEE Conference on Visual Analytics Science and Technology","volume":"6 6 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":"129978579","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}

引用次数: 3

Serious gaming with VENUS-PD: a virtual submarine for accessing Europe's sunken archaeological treasures 金星- pd的严肃游戏:一艘虚拟潜艇，用于访问欧洲沉没的考古宝藏

IEEE Conference on Visual Analytics Science and Technology Pub Date : 2009-09-22 DOI: 10.2312/VAST/VAST09/073-076

P. Chapman, Kim Bale, P. Drap

引用次数: 0