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Proceedings of the conference on visualization '99: celebrating ten years

作者： Kwan-Liu Ma 2063 Engineering II Department of Computer Science One Shields Avenue University of California Davis CA

ISBN: (纸本)9780780358973

For types of data visualization where the cost of producing images is high, and the relationship between the rendering parameters and the image produced is less than obvious, a visual representation of the exploration process can make the process more efficient and effective. Image graphs represent not only the results but also the process of data visualization. Each node in an image graph consists of an image and the corresponding visualization parameters used to produce it. Each edge in a graph shows the change in rendering parameters between the two nodes it connects. Image graphs are not just static representations: users can interact with a graph to review a previous visualization session or to perform new rendering. Operations which cause changes in rendering parameters can propagate through the graph. The user can take advantage of the information in image graphs to understand how certain parameter changes affect visualization results. Users can also share image graphs to streamline the process of collaborative visualization. We have implemented a volume visualization system using the image graph interface, and our examples in the paper come from this application.

关键词： scientific visualization knowledge representation volume rendering visualization systems

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Action reaction learning: Automatic visual analysis and synthesis of interactive behaviour 1st

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1st International conference on Computer Vision Systems, ICVS 1999

作者： Jebara, Tony Pentland, Alex Vision and Modeling MIT Media Laboratory CambridgeMA02139 United States

ISBN: (纸本)3540654593

We propose Action-Reaction Learning as an approach for analyzing and synthesizing human behaviour. This paradigm uncovers causal mappings between past and future events or between an action and its reaction by observing time sequences. We apply this method to analyze human interaction and to subsequently synthesize human behaviour. Using a time series of perceptual measurements, a system automatically discovers correlations between past gestures from one human participant (action) and a subsequent gesture (reaction) from another participant. A probabilistic model is trained from data of the human interaction using a novel estimation technique, Conditional Expectation Maximization (CEM). The estimation uses general bounding and maximization to monotonically find the maximum conditional likelihood solution. The learning system drives a graphical interactive character which probabilistically predicts a likely response to a user's behaviour and performs it interactively. Thus, after analyzing human interaction in a pair of participants, the system is able to replace one of them and interact with a single remaining user. © Springer-Verlag Berlin Heidelberg 1999.

关键词： Maximum likelihood estimation

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Towards fast volume visualisation on the WWW

Towards fast volume visualisation on the WWW

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International conference on Information visualisation (IV)

作者： M. Krokos F. Dong G.J. Clapworthy J.Y. Shi Department of Computer & Information Sciences De Montfort University Milton Keynes UK State Key Lab of CAD and CG University of Zhejiang Hangzhou China

The steady growth of the Internet has dramatically changed the way information is shared and modern users expect near real time delivery, high quality images together with in-depth navigation and exploration of 3D models. Multiresolution is a promising approach for fast distributed volume visualisation employing levels-of-detail. We review multiresolution algorithms and visualisation systems on the WWW. Our discussion is based on experience gained in the development of the IAEVA-ii project funded by the European Commission. A new method for rapid data classification/rendering of multiresolution volumes based on shear-warp factorisation, is described. We can change classification functions and data resolution during rendering without significant reduction in interactivity. A method for constructing multiresolution transfer functions for determining opacity is also investigated. Finally, future trends in developing WWW visualisation systems are discussed.

关键词： World Wide Web Internet Rendering (computer graphics) Navigation Tail visual databases data visualization Character generation Birth disorders Electrical capacitance tomography

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visualizing large-scale telecommunication networks and services

Visualizing large-scale telecommunication networks and servi...

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IEEE conference on visualization

作者： E.E. Koutsofios S.C. North R. Truscott D.A. Keim AT&T Laboratories Information Visualization Research Florham Park NJ USA

visual exploration of massive datasets arising from telecommunication networks and services is a challenge. This paper describes SWIFT-3D, an integrated data visualization and exploration system created at AT&T Labs for large scale network analysis. SWIFT-3D integrates a collection of interactive tools that includes pixel-oriented 2D maps, interactive 3D maps, statistical displays, network topology diagrams and an interactive drill-down query interface. Example applications are described, demonstrating a successful application to analyze unexpected network events (high volumes of unanswered calls), and comparison of usage of an Internet service with voice network traffic and local access coverage.

关键词： Large-scale systems data visualization Three dimensional displays Web and internet services Telecommunication traffic Asynchronous transfer mode Image databases Transaction databases Laboratories Electronic mail

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Temporal series recognition using a new neural network structure T-CombNET

Temporal series recognition using a new neural network struc...

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International conference on Neural Information Processing

作者： M.V. Lamar M. Shoaib Bhuiyan A. Iwata Department of Electrical and Computer Engineering Nagoya Institute of Technology Nagoya Japan Educational Center for Information Processi Nagoya Institute of Technology Nagoya Japan

We present a new neural network structure dedicated to the temporal data series recognition, called T-CombNET (Temporal CombNET). The T-CombNET is a modified and improved version of the CombNET-ii structure, which was designed to deal with very large vocabulary character recognition. We incorporated a time normalization stage and used recurrent neural networks to enable CombNET-ii to do the temporal analysis. Then we applied this new model T-CombNET to the hand gesture recognition task. The preliminary results show that the proposed structure is very efficient, obtaining a recognition rate of 99.41% in visual based kana hand alphabet recognition experiments.

关键词： Neural networks Pattern recognition Recurrent neural networks Hidden Markov models data mining Computer networks Information processing Character recognition Weather forecasting Automata

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Multivariable submarine control system analysis and design using an interactive visualization tool

Multivariable submarine control system analysis and design u...

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American Control conference (ACC)

作者： Sung-Sik Kwak Chen-I Lim R.P. Metzger A.A. Rodriguez Department of Electrical Engineering System Science and Engineering Research Center Arizona State University Tempe AZ USA

This paper describes an Interactive Modeling, Simulation, Animation, and Real-Time Control (MoSART) Environment which may be used for analyzing, designing, visualizing and evaluating the performance of robust multivariable submarine control systems. The described MoSART environment is based on Microsoft Windows NT/95/98, visual C++, Microsoft Direct-3D, and MATLAB/SIMULINK. The environment consists of several key modules: (i) a program user-interface (PUI) module, (ii) a real-time simulation (RTS) module, (iii) a graphical visualization and animation (GVA) module, and (iv) a help/instruct module. The environment also accommodates data exchange with MATLAB. This is useful for control system analysis and redesign. This makes the developed environment very extensible with respect to mathematical modeling and control. The developed Interactive MoSART Submarine Environment is shown to be a valuable tool for enhancing the analysis and design process. Examples are presented to illustrate its utility.

关键词： Underwater vehicles Control system analysis Mathematical model Animation MATLAB Analytical models Real time systems Performance analysis visualization Robust control

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A signal modulation approach to data sonification

A signal modulation approach to data sonification

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conference on visual data exploration and analysis V

作者： Grohn, M Backman, J Harma, A Ctr Comp Sci FIN-02101 Espoo Finland

ISBN: (纸本)0819427381

The human ear has a remarkable ability to detect temporal structures and patterns even in highly complex signals. Therefore, it is profitable to use the ear in data analysis especially in the cases where the amount of data is vast for any practical visualization technique. The main principle in this paper is to incorporate psychoacoustic knowledge into the system. For example, auditory frequency resolution, i.e,, ERB-scale is used in mapping data values to control parameters of the system. A real time computer program with a graphical user interface where various parameters of the system can be controlled is developed. For example, the time scale is continuously adjustable and there are methods to focus on some aspects or fractions of the data. The results are promising and show that this approach has potential in sonification applications. The limitation of the modulation approach is the number of simultaneously detectable parameters.

关键词： sonification psychoacoustics data analysis

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visual exploration of uncertainty in remote-sensing classification

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COMPUTERS & GEOSCIENCES 1998年第4期24卷 335-343页

作者： van der Wel, FJM van der Gaag, LC Gorte, BGH Royal Netherlands Meteorol Inst NL-3730 AE De Bilt Netherlands Univ Utrecht Fac Math & Comp Sci Dept Comp Sci NL-3508 TB Utrecht Netherlands Int Inst Aerosp Survey & Earth Sci ITC NL-7500 AA Enschede Netherlands

Exploratory analysis of remotely-sensed data aims at acquiring insight as to the stability of possible classifications of these data and their information value for specific applications. For this purpose, knowledge of the uncertainties underlying these classifications is imperative. In this paper, we introduce various measures that summarise for a classification;in a single number per pixel, the distribution and extent of the uncertainties involved. Since exploratory analysis needs effective ways of conveying information to the user, we in addition address various ways of cartographic visualisation of uncertainty. (C) 1998 Elsevier Science Ltd. All rights reserved.

关键词： remote sensing classification uncertainty visualisation

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Real-time volume visualization of sensor data for target detection and classification

Real-time volume visualization of sensor data for target det...

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conference on visual data exploration and analysis V

作者： Cross, RA Comp Graph Inc Fraunhofer Ctr Res Providence RI 02903 USA

ISBN: (纸本)0819427381

The Advanced Volume visualization Display (AVVD) research program is a joint research program between the Fraunhofer Center for Research in Computer Graphics, Inc. and Innovative Research and Development Corp. It is dedicated to the real-time visualization of high-resolution volumetric sensor data sets, maximizing the use of the human visual system to facilitate detection and classification in extremely hostile environments. The AVVD program has successfully demonstrated the application of high-speed volume visualization to a number of detection and classification problems. Recent emphasis has been on sonar for undersea imaging using data from the Naval Undersea Warfare Center - Division Newport's High Resolution Array (HRA), and rapid mine detection using data from the Coastal System Station's Toroidal Volume Search Sonar (TVSS). The AVVD system introduced a new capability: the intuitive composition of several "pings" into a synthetic volumetric set. This composite data is higher resolution, approaching optical quality, with soft shadows and broad specularities.

关键词： real-time sensor visualization data analysis sonar detection classification

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Fly wing asymmetry: A case study in visualization

Fly wing asymmetry: A case study in Visualization

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conference on visual data exploration and analysis V

作者： Buchanan, JW Ferry, P McIntyre, G Veryovka, O Univ Alberta Dept Comp Sci Edmonton AB T6G 2H1 Canada

ISBN: (纸本)0819427381

There are many visualization systems available to the scientific community. Unfortunately the use of such systems is not as wide spread as we would like. The visualization of a scientist's data involves expertise from the scientist and the visualizing expert. In this paper we document the interaction between a scientist and a team of graphics people. We discuss why standard visualization systems were not used and we present our prototype system for fly-wing asymmetry visualization In Biology organismal symmetry or lack thereof is being used as a measure of the quality of life forms. In this paper we present a system that was designed to facilitate the analysis of fly-wing data. The data used in this visualization was collected to test the hypothesis that old mothers produce lower quality offspring than young mothers. Thirteen landmarks at wing vein intersections were digitized three times on each wing and analyzed for asymmetry. The system that we present here complements the statistical analysis tools that are used for the formal analysis. In particular, our system has helped the scientist find outliers and gain an intuition for the data that has helped him decide which statistical analysis to perform.

关键词： visualization Statistical analysis Prototyping visual analytics Computing systems Organisms Veins Biological research Biology Quality measurement

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