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Projector Placement Planning for High Quality visualizations on Real-World Colored Objects

IEEE TRANSACTIONS ON visualization AND COMPUTER GRAPHICS 2010年第6期16卷 1633-1641页

作者： Law, Alvin J. Aliaga, Daniel G. Majumder, Aditi Purdue Univ Dept Comp Sci W Lafayette IN 47907 USA Univ Calif Irvine Dept Comp Sci Irvine CA USA

Many visualization applications benefit from displaying content on real-world objects rather than on a traditional display, (e.g., a monitor). This type of visualization display is achieved by projecting precisely controlled illumination from multiple projectors onto the real-world colored objects. For such a task, the placement of the projectors is critical in assuring that the desired visualization is possible. Using ad hoc projector placement may cause some appearances to suffer from color shifting due to insufficient projector light radiance being exposed onto the physical surface. This leads to an incorrect appearance and ultimately to a false and potentially misleading visualization. In this paper, we present a framework to discover the optimal position and orientation of the projectors for such projection-based visualization displays. An optimal projector placement should be able to achieve the desired visualization with minimal projector light radiance. When determining optimal projector placement, object visibility, surface reflectance properties, and projector-surface distance and orientation need to be considered. We first formalize a theory for appearance editing image formation and construct a constrained linear system of equations that express when a desired novel appearance or visualization is possible given a geometric and surface reflectance model of the physical surface. Then, we show how to apply this constrained system in an adaptive search to efficiently discover the optimal projector placement which achieves the desired appearance. Constraints can be imposed on the maximum radiance allowed by the projectors and the projectors' placement to support specific goals of various visualization applications. We perform several real-world and simulated appearance edits and visualizations to demonstrate the improvement obtained by our discovered projector placement over ad hoc projector placement.

关键词： Large and High-resolution Displays Interaction Design Mobile and Ubiquitous visualization

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MULTISCALE visualization OF RELATIONAL DATABASES USING LAYERED ZOOM TREES AND PARTIAL DATA CUBES

MULTISCALE VISUALIZATION OF RELATIONAL DATABASES USING LAYER...

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2nd Int conference on Imaging theory and applications and 1st Int conference on information visualization theory and applications

作者： Wang, Baoyuan Chen, Gang Bu, Jiajun Yu, Yizhou Zhejiang Univ Coll Comp Sci & Technol Hangzhou Zhejiang Peoples R China Univ Illinois Urbana IL 61801 USA Zhejiang Univ Hangzhou Zhejiang Peoples R China

ISBN: (纸本)9789896740276

The analysis and exploration necessary to gain deep understanding of large databases demand an intuitive and informative human-computer interface. In this paper, we present a visualization system with a client-server architecture for multiscale visualization of relational databases. The visual interface on the client supports web-based remote access. We use zoom trees to represent the entire history of a zooming process that reveals multiscale details. Every path in a zoom tree represents a zoom path and every node in the tree can have an arbitrary number of subtrees to support arbitrary branching and backtracking. Zoom trees are seamlessly integrated with a table-based overview using "hyperlinks" embedded in the table. To support fast query processing on the server, we further develop efficient GPU-based parallel algorithms for online data cubing and CPU-based data clustering. Also, a user study was conducted to evaluate the effectiveness of our design.

关键词： Database visualization Data cubes H-tree GPGPUs

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A new interactive information visualization framework based on the object-oriented views of querying and visualizing databases

A new interactive information visualization framework based ...

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International conference on Computer Graphics theory and applications, GRAPP 2013 and International conference on information visualization theory and applications, IVAPP 2013

作者： Shi, Wei Tanaka, Yuzuru Meme Media Laboratory Hokkaido University West 8. North 13 Kita-ku Sapporo Japan

ISBN: (纸本)9789898565464

In this paper, we propose a new visualization framework which can help users to create highly-customized and interactive visualizations. This framework includes an Object-Oriented View Manipulation Model for querying and manipulating data, as well as an Object-Oriented visualization Implementation Model for creating visualizations. The visualizations created using our framework allow users to directly manipulate them, which indirectly modifies the tree structures of the two models. Such interactions enable users to visually define an Object-Oriented view for querying the database, to visually create visualizations, and to modify existing visualizations. Users can also interact with the visualization results to filter out their visual objects which do not satisfy the user-specified conditions.

关键词： visualization

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Semantic visualization in social network analysis: A social network analysis example built using Tom Sawyer perspectives

Semantic visualization in social network analysis: A social ...

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International conference on Computer Graphics theory and applications, GRAPP 2013 and International conference on information visualization theory and applications, IVAPP 2013

作者： Yi, Liangrong Feng, Wendy Madden, Brendan Tom Sawyer Software 1997 El Dorado Avenue Berkeley CA United States

ISBN: (纸本)9789898565464

With the rapid development of social network websites, the need for social network analysis has been increasing dramatically. visualization is a very powerful tool in social network analysis. Tom Sawyer Perspectives is an advanced visualization software package and it integrates several visualization techniques including interactive visualization, data filtering, semantic zooming, search, animation and combination of multiple views. We propose to use a composite solution in social network analysis, present a case study of using Tom Sawyer Perspectives and validate its effectiveness.

关键词： Semantic Web

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Domain maps: Purposes, history, parallels with cartography, and applications

Domain maps: Purposes, history, parallels with cartography, ...

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11th International conference on information visualization (IV 2007)

作者： Hook, Peter A. Indiana Univ Sch Law Bloomington IN 47405 USA

This paper discusses the history of domain maps in the context of similar developments in the field of cartography. Drawing from its underlying definitions, this paper identifies the purposes of domain maps and discus... 详细信息

ISBN: (纸本)9780769529004

关键词： domain mapping history theory cartography digital libraries education future

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3D visualization and virtual reality for Visual Data Mining: A survey

3D visualization and virtual reality for Visual Data Mining:...

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2nd International conference on Imaging theory and applications, IMAGAPP 2010, 1st International conference on information visualization theory and applications, IVAPP 2010

作者： Said, Zohra Ben Guillet, Fabrice Richard, Paul LINA UMR 6241 CNRS University of Nantes Nantes France LISA EA 4094 University of Angers Angers France

ISBN: (纸本)9789896740276

Visual Data Mining (VDM) aims at an easier interpretation of data mining algorithm results through the use of visualization techniques. During the last decade, many techniques of information visualization have been proposed, allowing visualization of multidimensional data. Previously, ((Chi, 2000), (Herman et al., 2000)) attempted to classify VDM techniques . However, these taxonomies do not take into account some innovative techniques based on 3D visualization and virtual environments (VEs). In this paper, we propose an exhaustive survey of recent techniques for VDM. These different techniques are detailed, classified and compared according to the following criteria : graphical encoding, interaction techniques and applications. Moreover, they are presented in tables together with graphical illustrations.

关键词： Virtual reality

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Constructing visualizations with InfoVis tools: An evaluation from a user perspective

Constructing visualizations with InfoVis tools: An evaluatio...

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International conference on Computer Graphics theory and applications, GRAPP 2012 and International conference on information visualization theory and applications, IVAPP 2012

作者： Pantazos, Kostas Lauesen, Soren Software Development Group IT-University of Copenhagen Rued Langgaards Vej 7 Copenhagen Denmark

ISBN: (纸本)9789898565020

Several information visualization toolkits and tools have been developed to facilitate users work. However, evaluation studies for these toolkits and tools from a user perspective have been overlooked. In this paper, we evaluate 13 information visualization toolkits and tools developed in the last 10 years from a user perspective. For each user type (novice, savvy and expert), we investigated the toolkits and tools using 5 dimensions. This study shows that tools for savvy users-users with basic programming skills and domain knowledge- are lacking, and these users should be supported with more tools to construct advanced visualizations. We outline our approach to how savvy users can be engaged more in the development process and construct advanced visualizations. information visualization community should focus more on moving the boundary of constructing advanced visualizations from expert users towards savvy users.

关键词： visualization

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Uncertainty-aware Prediction in Spatio-temporal Simulation Ensemble visualizations 10

Uncertainty-aware Prediction in Spatio-temporal Simulation E...

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14th International Joint conference on Computer Vision, Imaging and Computer Graphics theory and applications (VISIGRAPP) / 10th International conference on information visualization theory and applications (IVAPP)

作者： Evers, Marina Linsen, Lars Westfalische Wilhelms Univ Munster Munster Germany

ISBN: (纸本)9789897583544

Spatio-temporal simulation ensembles are used to investigate the dependence of the simulation behavior on input parameters. Running simulations for a large number of input parameter settings is computationally expensive. We propose a scheme for exploring the parameter space using predictions of simulation outcomes and estimating the uncertainty in the predictions. The prediction approximates the simulation result by interpolating feature vectors of existing runs. The feature vectors are used to compute similarities between simulation runs facilitating visualization of the entire ensemble within a 2D (or 1D-over-time) multi-dimensional scaling embedding. Uncertainties of the prediction are computed based on distance, interpolation and diversity, which are visually encoded by an uncertainty band in the embedding. To guide the user to choose suitable parameter settings for prediction, we also propose a parameter-space visualization of the uncertainty. The approach is applied to real-world data simulating deep-water impact of asteroids.

关键词： Uncertainty visualization Ensemble visualization Parameter-Space visualization Volume visualization

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Visual Data Story Protocol: Internal Communications from Domain Expertise to Narrative visualization Implementation 16

Visual Data Story Protocol: Internal Communications from Dom...

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16th International Joint conference on Computer Vision, Imaging and Computer Graphics theory and applications (VISIGRAPP) / 12th International conference on information visualization theory and applications (IVAPP)

作者： Duangphummet, Apiwan Ruchikachorn, Puripant Inst Publ Policy & Dev Bangkok Thailand Chulalongkorn Univ Dept Stat Bangkok Thailand

ISBN: (纸本)9789897584886

Data stories play an important role in effectively and intuitively communicating data insights as well as enabling the audience to understand important social issues. Crafting a data story needs several sets of skills, we propose a five-phase data story protocol in order to guide data story design and development, and promote interdisciplinary team collaboration. This protocol was developed from our working team reflection on four data story projects and researching the related work. We hope that this protocol could be one potential way for non-journalism organizations to conduct data stories for their target audience.

关键词： Data Storytelling visualization Design visualization Development

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Data visualisation and statistical analysis within the decision making process

Data visualisation and statistical analysis within the decis...

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International conference on Computer Graphics theory and applications, GRAPP 2013 and International conference on information visualization theory and applications, IVAPP 2013

作者： Mahoney, Jamie Centre for Educational Research and Development University of Lincoln Lincoln United Kingdom

ISBN: (纸本)9789898565464

Large amounts of data are collected and stored within universities, but little is done to reuse this data to support decision making processes. This paper discusses the use of data visualisation and statistical analysis as methods of making sense of the collected data, analysing it to assess the effects of historical institutional decisions and discusses the use of such techniques to aid decision making processes.

关键词： Data visualization

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