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Combining spatial and lattice-based information landscapes

3rd International conference on Formal Concept analysis (ICFCA 2005)

作者： Ducrou, J Eklund, P Univ Wollongong Sch Informat Technol & Comp Sci Wollongong NSW 2522 Australia

ISBN: (纸本)3540245251

In this paper we report on practical information visualization aspects of Conceptual Knowledge Processing (CKP), realizing and illustrating Wille's "conceptual landscapes" in the context of developing a conceptual information system to determine surfing conditions on the South Coast of New South Wales, Australia. This novel application illustrates some (if not all) of Wille's CKP tasks: exploring, searching, recognizing, identifying, analyzing, investigating, deciding, restructuring and memorizing (all but improving). It does this by concentrating on combining an information landscape with maps of the physical world.

关键词： data processing

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Spider cursor: A simple versatile interaction tool for data visualization and exploration 05

Spider cursor: A simple versatile interaction tool for data ...

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GRAPHITE 2005 - 3rd International conference on Computer Graphics and Interactive Techniques in Australasia and Southeast Asia

作者： Minghim, Rosane Levkowitz, Haim Nonato, Luis Gustave Watanabe, Lionis Salvador, Veridiana Lopes, Hélio Pesco, Sinésio Tavares, Geovan Instituto de Ciências Matemáticas e de Computação University of São Paulo Pontifícia Universidade Católica do Rio de Janeiro University of Massachusetts Lowell United States

ISBN: (纸本)1595932267

We present Spider Cursor, an exploration tool for geometric models that has proven useful in analyzing data coming from various sources. The Spider Cursor is simple to learn and use, and is useful to help extract various types of relationships present in the data. Additionally, it implements a dual presentation mode, in which visual and aural attributes are used to represent information. A cursor in the shape of a spider runs on top of a surface, helping location of information at neighboring points of the geometry. That can be used for data analysis as well as model manipulations (such as cuts and marks). Sound is employed to display complementary and supplementary information as well as to help define orientation. This paper describes the basic concepts of the Spider Cursor, and illustrates its use by giving examples of applications. Copyright © 2005 by the Association for Computing Machinery, Inc.

关键词： Interactive computer graphics

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Voxel-based representation, display and thickness analysis of intricate shapes

Voxel-based representation, display and thickness analysis o...

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9th International conference on Computer Aided Design and Computer Graphics

作者： Patil, S Ravi, B Indian Inst Technol Bombay 400076 Maharashtra India

ISBN: (纸本)0769524737

An efficient voxel representation scheme coupled with algorithms for voxelisation, display and thickness analysis of complex free form shapes is presented. The binary voxel model is stored as a stack of layers represented as bit-arrays. Polygonal solid models are converted into voxel format with a maximum resolution of 1000 (one billion voxels) in less than 2 minutes. Near real-time visualization of the voxel model is achieved by direct point rendering using a look-up table based on a finite set of neighbour voxel configurations. Thickness analysis is performed in terms of cross-sectional visualisation, progressive skin removal and radiography with minimum, maximum and total thickness along an orthographic direction. Testing of the algorithms for intricate shapes like Ganesha idol, pelvis bone and automobile cylinder gave satisfactory results. The voxel framework can be coupled to traditional CAD/CAM systems, providing additional capabilities to product engineers.

关键词： data visualisation rendering (computer graphics) solid modelling complex free form shapes cross-sectional visualisation direct point rendering display analysis intricate shapes look-up table neighbour voxel configurations polygonal solid models progressi entity modeling data visualisation pixel Rendering (computer graphics) color lookup table

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Multichannel image processing system for thermal supervision systems

Multichannel image processing system for thermal supervision...

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18th International conference on Photoelectronics and Night Vision Devices

作者： Zorin, AA Razumova, II Tarkov, VA Siberian Res Inst Opt Syst Novosibirsk 630049 Russia

ISBN: (纸本)0819458287

Foundation principles of multichannel real-time information processing system, which is solving a problem of automatic object tracking, are considered in this work. Image processing algorithms, which are used for three-channel system foundation and optimally approaching for system core - Microprocessor Neuro Matrix NM6403 are realized. Information processing is accomplished with using of Hopfield neural network, one 384x288 frame processing time is about 100... 140 ms.

关键词： data processing Neural networks Image processing Automatic tracking Detection and tracking algorithms Evolutionary algorithms Convolution data analysis Image quality visualization

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Curved planar reformation of CT spine data

Curved planar reformation of CT spine data

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Medical Imaging 2005 conference

作者： Vrtovec, T Likar, B Pernus, F Univ Ljubljana Fac Elect Engn SI-1000 Ljubljana Slovenia

ISBN: (纸本)0819457213

Traditional techniques for visualizing anatomical structures are based on planar sections from volume images, like images obtained by computed tomography (CT) or magnetic resonance imaging (MRI). However, planar slices taken in the coordinate system of the 3D image often do not provide sufficient or qualitative enough diagnostic information. The reason is that because planar slices do not follow curved anatomical structures (e.g. arteries, colon. spine, etc.). not all important details can be shown simultaneously. For better visualization of curved structures, reformatted images in the coordinate system of a structure must be created (an operation called curved planar reformation). In this paper we focus on automated curved planar reformation (CPR). The obtained spine-based 3D coordinate system is determined by the natural curvature of the spine, described by a curve that is parameterized by a polynomial model. The model is optimized to fit the curvature of the spine basing on the values of a pre-calculated distance map. The first coordinate is defined by the resulting spine curve, while the other two coordinates are defined by the natural rotations of the vertebrae around the spine curve. The proposed approach benefits from reduced structural complexity in favor of improved feature perception of the spine, and is not only important for extracting diagnostically important images, but also for easier navigation, manipulation and orientation in 3D space, which is helpful for morphometric analysis, automated image analysis (e.g segmentation), and normalization of spine images.

关键词： visualization curved planar reformation spine computed tomography (CT)

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Behavior based children accidents' simulation and visualization: Planning the emergent situations

Behavior based children accidents' simulation and visualizat...

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IASTED International conference on Computational Intelligence

作者： Simo, A Kitamura, K Nishida, Y AIST Digital Human Res Ctr Aomi Koto Ku Tokyo 1350064 Japan

ISBN: (纸本)0889864799

As the population in certain countries becomes older, good technology to deal with quality-of-life issues will be essential. This in particular concerns countries, where the ratio of the future working people compared to people who need support from society is unbalanced. Technological solutions are needed to efficiently use available active human resources and deal with issues of the quality of the services offered for both the aged and the newborn generation. The following paper describes a method for simulating children's behavior (especially those related to or causing accidents) in a 3D virtual environment. We base our research on the use of 3D graphics engine capabilities, while the behavior modeling is based on hybrid approaches which include AI scenario generation components, data gathered from experiments and probability belief networks. Their integration is our main aim and is intended to be done in an open architecture. We describe some key concepts that we employed in building this simulator and a view of future development planned for the course of analysis and visualization research that we are following.

关键词： Children's Accidents human/infant behavior generation/simulation educational 3D games event-based agent's simulation accident scenario

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Howard D White: Recipient of the 2005 Derek de Solla Price Award of the journal scientometrics

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SCIENTOMETRICS 2005年第3期65卷 271-273页

作者： McCain, C Drexel Univ Informat Studies Coll Philadelphia PA 19104 USA

Howard White has a long record of creativity and scholarship that spansinformation science, library science, and related areas in the social sciences. The more than 90publications in his bibliography include two books, two ARIST reviews, and an extensive list ofjournal articles and conference proceedings. His work has been cited in more than 400 articlesindexed in the ISI databases - an average of about 15 citations/year since 1977. While the citingarticles come primarily from journals in LIS and Computer Science/Information Systems, his work hasalso been cited in a wide variety of fields in the natural and social sciences and humanities. Hisselection for the Price Award reflects his extensive and substantial contributions to informationscience and scientometrics - bibliometrics and citation analysis, automatic visualization ofco-occurrence data in scholarly literatures, innovations in online searching and evaluation ofonline bibliographic retrieval systems.

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Mapping domain expertise within teams: Visual stimulation of knowledge-building through collaboration

Mapping domain expertise within teams: Visual stimulation of...

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9th International conference on Information Visualisation

作者： Behrens, C Bassu, D Shim, HS Applied Research Telcordia Technologies Inc. United States

ISBN: (纸本)0769523978

Recent R&D efforts for the U.S. Intelligence Community have been directed towards providing new Information Technology that better supports collaborative war-gaming and decision-modeling among expert teams so as to produce valid and reliable intelligence in a more-timely, less-costly manner. This paper describes Schemer, a web service that provides knowledge validation and collaboration support to virtual panels of experts. Of particular interest is the way that Schemer uses visualization of knowledge distribution among panelists to motivate collaboration, with the goal of fostering greater consensus and knowledge-building, hence, better intelligence. Since an additional requirement for supporting virtual panels is incremental data acquisition from panel members, models must often be computed from incomplete data. The same visualization techniques for evaluating consensus formation and knowledge-building among panelist also prove useful for evaluating the impact of data imputation on model validity and reliability.

关键词： knowledge validation collaboration multidimensionsal scaling Procrustes analysis consensus model

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Integrating abstract and physicalmolecularmodel interaction

Integrating abstract and physicalmolecularmodel interaction

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3rd Theory and Practice of Computer Graphics conference, TPCG 2005

作者： Thorne, Dave Pettifer, Steve Attwood, Terri Advanced Interfaces Group School of Computer Science University of Manchester United Kingdom Sequence Analysis Group Faculty of Life Sciences University of Manchester United Kingdom

ISBN: (纸本)3905673568

Historically, bioinformaticians have carried out protein analysis in one of two ways: by concentrating on either the physical structural representation of the subject data or a more abstract sequential representation. This paper describes a system currently in development at The University of Manchester that attempts to unify these two paradigms. We discuss the use of high-end rendering techniques to greatly increase the level of detail and interactivity of molecular visualisation, and describe the requirements placed upon that visualisation by the relationship between the abstract and physical models. © The Eurographics Association 2005.

关键词： visualization

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Choices for tissue visualization with IR micro spectroscopy

Choices for tissue visualization with IR micro spectroscopy

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3rd International conference on Shedding Light on Disease - Optical Diagnostics for the New Millenium (SPEC 2004)

作者： Gough, K Rak, M Bookatz, A Del Bigio, M Mai, S Westaway, D Univ Manitoba Dept Chem Winnipeg MB R3T 2N2 Canada Univ Manitoba Dept Pathol Winnipeg MB R3E 0W3 Canada Univ Manitoba Manitoba Inst Cell Biol Winnipeg MB R3E 0V9 Canada Univ Toronto Ctr Res Neurodegenerat Dis Toronto ON M5S 3H2 Canada

In this paper, we address some of the issues associated with infrared (IR) imaging, with reference to our work on brain tissue from the TgCRND8 mouse, a transgenic model of Alzheimer's disease (AD). AD is the most common cause of dementia in the aging population. One of the characteristic hallmarks of this chronic neurodegenerative disorder is the accumulation of plaques in the brain, usually visualized with histochemistry and immunostaining. Although these methods are extremely useful, they illustrate only certain aspects of the sample, require a great amount of tissue processing, and are highly dependent on experimental protocols and reagent quality. IR imaging provides information on multiple components, with a minimal amount of sample processing. However, in order to interpret the data successfully, the issues of spectral acquisition parameters, pre-processing, and spectral artifacts need to be considered. The methods commonly used to process the data, such as uni- and bi-variate spectral analysis, and multivariate methods, such as hierarchical cluster analysis, and some issues concerning the use of second derivatives of IR spectra are discussed. (c) 2005 Elsevier B.V. All rights reserved.

关键词： infrared microspectroscopy Alzheimer's disease spectral data processing second derivative

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