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检索条件"任意字段=Conference on Visual Data Exploration and Analysis II"

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Supporting visual exploration of Object Movement 00

Supporting Visual Exploration of Object Movement

引用

Proceedings of the Working conference on Advanced visual Interfaces

作者： Natalia Andrienko Gennady Andrienko Peter Gatalsky GMD - German National Research Center for Information Technology Schloss Birlinghoven Sankt-Augustin D-53754 GermanyGMD - German National Research Center for Information Technology Schloss Birlinghoven Sankt-Augustin D-53754 Germany GMD - German National Research Center for Information Technology Schloss Birlinghoven Sankt-Augustin D-53754 Germany

ISBN: (纸本)9781581132526

The focus of the presented work is visualization of routes of objects that change their spatial location in time. The challenge is to facilitate investigation of important characteristics of the movement: positions of the objects at any selected moment, directions, speeds and their changes with the time, overall trajectories and those for any specified interval etc. We propose a dynamic map display controlled through a set of interactive devices called time controls to be used as a support to visual exploration of spatial movement.

关键词： visualization of spatio-temporal data interactive maps animation direct manipulation exploratory data analysis

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Power- and space-efficient image computation with compressive processing. 1. Background and theory

Power- and space-efficient image computation with compressiv...

引用

conference on Mathematics and Applications of data/Image Coding, Compression, and Encryption iiI

作者： Schmalz, MS Univ Florida Dept Comp & Informat Sci & Engn Gainesville FL 32611 USA

ISBN: (纸本)0819437670

Surveillance imaging applications on small autonomous imaging platforms present challenges of highly constrained power supply and form factor, with potentially demanding specifications for target detection and recognition. Absent of significant advances in image processing hardware, such power and space restrictions can imply severely limited computational capabilities. This holds especially for compute-intensive algorithms with high-precision fixed- or floating-point operations in deep pipelines that process large data streams. Such algorithms tend not to be amenable to small or simplified architectures involving (for example) reduced precision, reconfigurable logic, low-power gates, or energy recycling schemes. In this series of two papers, a technique of reduced-power computing called compressive processing (CXP) is presented and applied to several low- and mid-level computer vision operations. CXP computes over compressed data without resorting to intermediate decompression steps. As a result of fewer data due to compression, fewer operations are required by CXP than are required by computing over the corresponding uncompressed image. In several cases, CXP techniques yield speedups on the order of the compression ratio. Where lossy high-compression transforms are employed, it is often possible to use approximations to derive CXP operations to yield increased computational efficiency via a simplified mix of operations. The reduced work requirement, which follows directly from the presence of fewer data, also implies a reduced power requirement, especially if simpler operations are involved in compressive versus noncompressive operations. Several image processing algorithms (edge detection, morphological operations, and component labelling) are analyzed in the context of three compression transforms: vector quantization (VQ), visual pattern image coding (VPIC), and EBLAST. The latter is a lossy high-compression transformation developed for underwater communication

关键词： image compression error analysis compressive processing

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A spreadsheet interface for visualization exploration

A spreadsheet interface for visualization exploration

引用

IEEE conference on visualization

作者： T.J. Jankun-Kelly Kwan-Liu Ma Computer Science Department University of California Davis USA

As the size and complexity of data sets continues to increase, the development of user interfaces and interaction techniques that expedite the process of exploring that data must receive new attention. Regardless of the speed of rendering, it is important to coherently organize the visual process of exploration: this information both grants insights about the data to a user and can be used by collaborators to understand the results. To fulfil these needs, we present a spreadsheet-like interface to data exploration. The interface displays a 2-dimensional window into visualization parameter space which users manipulate as they search for desired results. Through tabular organization and a clear correspondence between parameters and results, the interface eases the discovery, comparison and analysis of the underlying data. Users can utilize operators and the integrated interpreter to further explore and automate the visualization process; using a method introduced in this paper, these operations can be applied to cells in different stacks of the interface. Via illustrations using a variety of data sets, we demonstrate the efficacy of this novel interface.

关键词： data visualization User interfaces Computer science Rendering (computer graphics) Displays Computer graphics Image processing Collaboration Chromium Graphical user interfaces

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WEAVE: a system for visually linking 3-D and statistical visualizations applied to cardiac simulation and measurement data

WEAVE: a system for visually linking 3-D and statistical vis...

引用

IEEE conference on visualization

作者： D.L. Gresh B.E. Rogowitz R.L. Winslow D.F. Scollan C.K. Yung Department of Biomedical Engineering Johns Hopkins University School of Medicine USA IBM Thomas J. Watson Research Center USA

WEAVE (Workbench Environment for analysis and visual exploration) is an environment for creating interactive visualization applications. WEAVE differs from previous systems in that it provides transparent linking between custom 3D visualizations and multidimensional statistical representations, and provides interactive color brushing between all visualizations. The authors demonstrate how WEAVE can be used to rapidly prototype a biomedical application, weaving together simulation data, measurement data, and 3D anatomical data concerning the propagation of excitation in the heart. These linked statistical and custom three-dimensional visualizations of the heart can allow scientists to more effectively study the correspondence of structure and behavior.

关键词： Joining processes data visualization Heart Medical simulation Biomedical measurements Computational modeling Extraterrestrial measurements Couplings Biomedical engineering Multidimensional systems

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The importance of learning styles in group design work

The importance of learning styles in group design work

引用

Frontiers in Education (FIE) conference

作者： K. Carrizosa S. Sheppard Department of Mechanical Engineering University of Stanford Stanford CA USA

Effective communication between engineering design team members is essential. It depends on the successful transfer (sending, receiving and processing) of information. This information may range from data and facts to creative ideas. Recent work by R. Felder and L. Silverman (1988) has shown that individuals differ from one another in how they prefer to receive and process information. In this paper, we look at the relationship between individuals' preference for receiving information and their methods of sending information. It was initially anticipated that each individual's mode of presenting information would match his or her preferred mode of receiving information, and that this match would result in improved communication. To study the congruency (or incongruency) of how individuals prefer to receive information and how they go about sending information, an experiment was designed and conducted. The experiment consisted of four teams of engineering educators engaged in a design exercise. Their design activities were videotaped. Results based on analysis of the tapes and individual learning styles inventories showed that most participants preferred to receive information visually and engaged in drawing very little during the design exercise. If the definition was expanded to include using drawings, communicative gesturing (i.e. using hand gestures to describe a physical object or action), using hardware and referencing hardware, then visual communication went from comprising an average of 3.8% of the design time to an average of 21.1% of the design time.

关键词： Design engineering Hardware visual communication Space exploration Engineering students Communication effectiveness Information analysis Engineering drawings Process design Chemical engineering

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On the performance evaluation of hybrid-trained neural classifier for the detection of hazardous vapours using responses from SAW sensors array

On the performance evaluation of hybrid-trained neural class...

引用

IEEE International conference on Industrial Technology (ICIT)

作者： A.K. Srivastava S.K. Srivastava K.K. Shukla Centre For Research In Microelectronics Department of Electronics EngineeringInstitute of Technology Banaras Hindu University Varanasi India Visual Computing and Artificial Inlelligence Laboratories Department of Computer EngineeringInstitute of Technology Banaras Hindu University Varanasi India

A neural classifier has been designed by a new two-phase hybrid training algorithm introduced by us for classification of hazardous vapours. The neural network is trained using genetic algorithm in initial phase. This is followed by a second phase of backpropagation training that uses weight matrix determined by first phase for initialization. For establishing the superior performance of our classifier, published data from polymer-coated surface-acoustic wave (SAW) sensors array exposed to varying concentration of each of nine vapours belonging to two different classes have been used. Vapours of class I are toxic vapours of interest in ambient air that contains common interferents (class ii vapours) at much higher concentration. Performance of the classifier is evaluated by reducing dimensionality of resulting data matrix from 4 to 1 by taking a different set of sensors. We show that as the dimension is reduced, the gas identification problem becomes harder for backpropagation. Whereas the same set of problems when solved using a genetic algorithm with heuristic switch over to backpropagation as a training paradigm, significantly better results are obtained in predicting class and type of test vapours.

关键词： Sensor arrays Surface acoustic waves Genetic algorithms Switches Algorithm design and analysis Backpropagation algorithms Neural networks Polymers Surface waves Testing

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SOM based analysis of pulping process data 5th

引用

5th International Work-conference on Artificial and Natural Neural Networks (IWANN 99)

作者： Simula, O Alhoniemi, E Helsinki Univ Technol Lab Comp & Informat Sci Helsinki Finland

ISBN: (纸本)3540660682

data driven analysis of complex systems or processes is necessary in many practical applications where analytical modeling is not possible. The Self-Organizing Map (SOM) is a neural network algorithm that has been widely applied in analysis and visualization of high-dimensional data. It carries out a nonlinear mapping of input data onto a two-dimensional grid. The mapping preserves the most important topological and metric relationships of the data. The SOM has turned out to be art efficient tool in data exploration tasks in various engineering applications: process analysis in forest industry, steel production and analysis of telecommunication networks and systems. In this paper, SOM based analysis of complex process data is discussed. As a case study, analysis of a continuous pulp digester is presented. The SOM is used to form visual presentations of the data. By interpreting the visualizations, complex parameter dependencies can be revealed. By concentrating on the significant measurements, reasons for digester faults can be determined.

关键词： Self organizing maps

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Seeing the text: Program visualization for text analysis in the humanities

Seeing the text: Program visualization for text analysis in ...

引用

conference on visual data exploration and analysis VI

作者： Monger, P Rockwell, G McMaster Univ Hamilton ON L8S 4M1 Canada

ISBN: (纸本)0819431141

In this paper we will discuss a prototype visual programming environment for text applications called Eye-ConTact. Eye-ConTact is modeled on scientific visualization systems such as NAG's Explorer(TM). The user creates a flow chart of how the "experiment" on a text is to be conducted. The map of this flow of data allows the researcher to see the logic of the study of a text and then reproduce such studies with other texts, or alter the analysis. To adapt the visual programming model to the community of textual scholars, the program must be usable and extendable by a community with limited resources for computing, and not entirely convinced that computationally-based research is relevant. The "keep it simple" injunction is crucial in such a project. Furthermore, there are no defined or de facto standards for data formats or data representations in this community. We will discuss the original (1997) prototype. Feedback from demonstrations led to changes to the programming interface, and the underlying text analysis engine, in order to make the former more indicative of the steps in the analysis process, and the latter more portable and extensible. We will discuss the design decisions we made to address these two issues.

关键词： program visualization computer-assisted text analysis

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Multimedia data processing algorithm development environment (MADE)

Multimedia data processing algorithm development environment...

引用

conference on visual data exploration and analysis VI

作者： Lee, J Chae, O Kyung Hee Univ Dept Comp Engn YongIn Si 449701 KyungKi Do South Korea

ISBN: (纸本)0819431141

This paper presents the system called "MADE". MADE is an object-oriented software environment for research and application development for multimedia data processing. It is an integrated environment that supports algorithm development, management, and testing. It provides tools for image, sound, and graphic data processing even though the main emphasis is on image processing. The proposed system adopts a true object-oriented approach supporting well-separated data classes similar to IUE classes and provides multiple user interfaces for various classes of users. By separating the interface layer from data processing functions, it allows algorithm developers to write their functions without worrying about user interface programming. It is specially designed to work with both graphic and image objects in the same domain. It can display and edit image features in the graphic domain and process them in the image domain.

关键词： IUE algorithm development tool visual programming tool multimedia data processing C interpreter object-oriented programming

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VR visualization of large fluid flow data sets

VR visualization of large fluid flow data sets

引用

conference on visual data exploration and analysis VI

作者： Lanzagorta, M Rosenberg, R Khokhlov, A Chtchelkanova, A Kuo, E USN Res Lab Sci Visualizat Lab Washington DC 20375 USA

ISBN: (纸本)0819431141

In this paper we describe the effects being carried out by the Laboratory of Computational Physics, the Scientific visualization Laboratory and the Virtual Reality Laboratory of the Naval Research Laboratory towards visualization of large data sets. We have concentrated on fluid flow hydrodynamics data sets. We describe the fully threaded tree structure developed at NRL to tackle the problem of massive parallel calculations using local mesh refinement methods. This structure was implemented with the IBM data Explorer environment, allowing a multiresolution visualization system that inherits the properties of the tree structure in a natural way. We also describe the visualization of these data sets in a virtual environment.

关键词： visualization Virtual reality Computing systems Scientific visualization Software development Analytical research Numerical simulations Computational physics Head Human-machine interfaces

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