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Lecture Notes in computer science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) 2001年 2037卷 V-VI页

作者： Boers, Egbert J. W. Cagnoni, Stefano Gottlieb, Jens Hart, Emma Lanzi, Pier Luca Raidl, Günther R. Smith, Robert E. Tijink, Harald Leiden Institute of Advanced Computer Science Leiden University Niels Bohrweg 1 Leiden Netherlands Dept. of Computer Engineering University of Parma Parco Area delle Scienze 181/a Parma Italy SAP AG Neurottstrasse 16 Walldorf Germany Napier University School of Computing 219 Colinton Road Edinburgh United Kingdom Polytechnic of Milan Piazza Leonardo da Vinci 32 Milan Italy Algorithms and Data Structur es Group Institute of Computer Graphics Vienna University of Technology Favoritenstrasse 9-11/186 Vienna Austria The Intelligent Computer Systems Centre The University of The West of England Coldharbour Lane Frenchay Bristol United Kingdom Data and Knowledge Systems Department National Aerospace Laboratory NLR P.O. Box 153 Emmeloord Netherlands

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Communicating dynamic behaviors: Are interactive multimedia presentations better than static mixed-mode presentations? 1

Communicating dynamic behaviors: Are interactive multimedia ...

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1st International Conference on Theory and Application of Diagrams, Diagrams 2000

作者： Hari Narayanan, N. Hegarty, Mary Intelligent and Interactive Systems Laboratory Department of Computer Science and Software Engineering Auburn University AuburnAL36849 United States Department of Psychology University of California Santa BarbaraCA93106 United States

ISBN: (纸本)3540679154

Static mixed-mode presentations consisting of verbal explanations illustrated with diagrams have long been used to communicate information. With the advent of multimedia, such presentations have become dynamic, by migrating from paper to the computer and by adding interactivity and animation. The conventional wisdom is that computer-based multimedia presentations are better than printed presentations. However, does the communicative power of mixed-mode representations stem from their careful design to match cognitive processes involved in comprehension or from their interactive and animated nature? This is an important issue that has never been investigated. This paper first presents a cognitive model of comprehension of mixed-mode representations. We describe how this model generates design guidelines for mixed-mode representations that present expository material in two domains - the concrete domain of mechanical systems and the abstract domain of computer algorithms. We then report on a series of studies that compared computer-based interactive multimedia presentations and their paper-based counterparts. Both were designed in accordance with the comprehension model and were compared against each other and against competing representational forms such as books, CD-ROMs, and animations. These studies indicate that the effectiveness of mixed-mode presentations has more to do with their match with comprehension processes than the medium of presentation. In other words, benefits of interactivity and animation are likely being overstated in the current milieu of fascination with multimedia. © Springer-Verlag Berlin Heidelberg 2000.

关键词： Animation

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Image quantization using Self-Splitting Competitive Learning

Image quantization using Self-Splitting Competitive Learning

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IEEE International Conference on systems, Man and Cybernetics

作者： Ya-Jun Zhang Zhi-Qiang Liu Intelligent Systems Laboratory Department of Computer Science and Software Engineering University of Melbourne VIC Australia

We have developed a new, robust clustering algorithm, Self-Splitting Competitive Learning (SSCL). It has shown great abilities in detecting not only isolated clusters, but overlapped clusters, curves and spherical shells. We apply SSCL to quantization of color images. The clustering algorithm iteratively partitions the color space into natural clusters without a prior information on the number of clusters. The algorithm starts with only a single color prototype and adaptively splits it into multiple prototypes during the learning process based on a split validity measure. It is able to discover all natural groups; each is associated with a color prototype. The experimental results show remarkably better performance as compared to several other existing clustering algorithms.

关键词： Prototypes Clustering algorithms Quantization Pixel Partitioning algorithms Iterative algorithms Image analysis Pattern analysis Image color analysis Gray-scale

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Evaluating modeling efficiency of a specific software architecture

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systems and computers in Japan 2000年第11期31卷 1-11页

作者： Kawakami, Masumi Yoshida, Atsushi Isoda, Sadahiro Knowledge-Based Info. Engineering Toyohashi University of Technology Toyohashi 441-8580 Japan Systems Development Laboratory Hitachi Ltd. Toyohashi University of Technology Wakayama University Nagoya University University of Tokyo Department of Computer Science University of Illinois Urbana IL United States Spec. Interest Grp. on Software Eng. Info. Processing Society of Japan

software architectural styles that represent structural characteristics of software programs range from specific ones that can be applied to a particular domain to generic ones that can be applied to any domain. If a specific architectural style is available for the target system to be developed, it is appropriate to apply it together with its associated modeling method. However, no quantitative evaluation on the efficiency of specific architectural styles has as yet been reported. This paper presents a quantitative comparison of two architectural styles: specific and generic software architectural styles. The comparison shows that a specific architectural style combined with its associated modeling method allows us to reduce modeling cost as much as a few scores of percent compared with the generic one combined with its modeling method. The improvement results from the characteristics that (1) a specific software architectural style requires less rewriting of modeling diagrams due to its inherent basic structure and (2) there is less redundant information among modeling diagrams.

关键词： Client server computer systems

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Discrete-time tracking control of robotic manipulators based on dynamic inversion using dynamic neural networks

Discrete-time tracking control of robotic manipulators based...

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IEEE International Symposium on intelligent Control (ISIC)

作者： F.C. Sun Z.Q. Sun R.J. Zhang Y.B. Chen Department of Computer Science and Technology State Key Laboratory of Intelligent Technology and Systems Beijing China Departmentof Electrical Engineering Purdue University Indianapolis IN USA

A stable discrete time tracking control approach based on dynamic inversion using dynamic neural networks (DNNs) is developed in the paper for robotic manipulators with unknown dynamics nonlinearities. Two novel design technologies-dynamic inversion constructed by DNNs and the NN variable structure control-are used for adaptive tracking controller design. The robot control law is composed of the dynamic inversion of the DNN system, adaptive compensation and the NN variable structure control (VSC) components. The developed control scheme guarantees the global stability and tracking error convergence of the NN control system. Finally, the control performance of the proposed control approach is illustrated through the comparison studies with robot tracking control approach using static NNs.

关键词： Robot control Manipulator dynamics Neural networks Nonlinear dynamical systems Control systems Programmable control Adaptive control Control nonlinearities Adaptive systems Stability

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Fuzzy relational products in information processing: classical products and new products

Fuzzy relational products in information processing: classic...

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IEEE International Conference on Fuzzy systems (FUZZ-IEEE)

作者： P. Santiprabhob K. Dowpiset R. Jiamthapthaksin Faculty of Science and Technology Intelligent Systems Laboratory Assumption University Bangkok Thailand Department of Computer Information Management Saint John''s University Bangkok Thailand Faculty of Science and Technology Software Technology Laboratory Assumption University Bangkok Thailand

This paper summarizes and compares different fuzzy relational products. First, the classical circle product is discussed. Then, another set of classical products, triangle subproduct, triangle superproduct, and square product are revisited for both harsh and soft versions. Afterward, two new fuzzy relational products developed by the authors, namely similarity product and star product are described. These new products have been developed from practical viewpoints of certain applications for which the semantics of the classical products has proven inadequate. The products' definitions and semantics are given, and compared with those of the classical ones where appropriate.

关键词： Information processing Paper technology Fuzzy sets Laboratories Social network services intelligent systems software Information management Fuzzy systems Information retrieval

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Dense range image smoothing using adaptive regularization

Dense range image smoothing using adaptive regularization

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IEEE International Conference on Image Processing

作者： Yiyong Sun Joon-Ki Paik J.R. Price M.A. Abidi Department of Electrical and Computer Engineering Imaging Robotics and Intelligent Systems Laboratory University of Tennessee Knoxville USA Department of Image Engineering Graduate School of Advanced Imaging Science Chung-Ang University Seoul South Korea

We propose an adaptive regularization algorithm for smoothing dense range images using a novel, first order stabilizing function. The stabilizer we suggest is based upon minimizing the reconstructed surface area and is derived in the native, spherical coordinate system of the range scanner. This allows adjustments to be made along only the direction of measurement, thereby preventing the data overlapping problem that can arise in dense images. Adaptation is achieved by adjusting the regularization parameter according to the results of 2D edge analysis. Results indicate effective noise suppression along with well preserved edges and details in the reconstructed, 3D surfaces.

关键词： Smoothing methods Surface reconstruction Image reconstruction Image edge detection intelligent robots Robot kinematics intelligent systems Laboratories Laser noise Noise measurement

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Tightly coupling authoring and evaluation in an integrated tool to support iterative design of interactive hypermedia educational manuals 00

Tightly coupling authoring and evaluation in an integrated t...

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Proceedings of the 3rd conference on Designing interactive systems: processes, practices, methods, and techniques

作者： Selma Holmquist N. Hari Narayanan Departamento de Cálculo Facultad de Ingeniería Universidad de Los Andes Mérida Venezuela Intelligent & Interactive Systems Laboratory Dept. of Computer Science & Software Engineering Auburn University Auburn AL

ISBN: (纸本)9781581132199

Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a *** this paper we present a framework for the iterative design of interactive Hypermedia Educational Manuals, implemented in a software tool that integrates authoring and evaluation support in order to speed up iterative design cycles. Two unique features of our approach are the automatic generation of a structural description of the manual being designed and the automatic incorporation of interaction data logging elements in the manual during the authoring phase. These are then used by an evaluation tool to generate statistical analyses and graphical presentations of user interactions with the manual and redesign recommendations. Thus, the architecture of this tool embodies a tight coupling between the design of Hypermedia Educational Manuals and the evaluation of their instructional effectiveness. An experiment was carried out in which a prototype manual was created, tested with a group of students, redesigned based on analyses and recommendations provided by the evaluation tool, and then re-evaluated using data from a second group of students. This experiment showed that the integrated tool does help simplify the evaluation process and improve the efficiency of iterative design cycles.

关键词： empirical study interaction data analysis and visualization iterative design tool evaluation hypermedia authoring

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Factorization method for multiple perspective views via iterative depth estimation

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systems and computers in Japan 2000年第13期31卷 87-95页

作者： Ueshiba, Toshio Tomita, Fumiaki Electrotechnical Laboratory Tsukuba 305-8568 Japan Department of Electrical Engineering University of Tokyo Electrotechnical Laboratory Min. of Intl. Trade and Industry Intelligent Systems Division Canada Nat. Inf. Eng. Lab. Information Processing Society Robotics Society of Japan Soc. of Instrum. Control Engineers Department of Control Engineering Osaka University CMU Department of Computer Science Information Processing Society Robotics Society of Japan

This paper proposes a factorization method that reconstructs camera motion and scene shape based on the matching of multiple images under the condition that the camera captures a perspective view. Starting from the affine projection camera model, the projection depth is iteratively estimated until the measurement matrix has rank 4. Then, the obtained measurement matrix is factorized to restore the three-dimensional information of the scene in the projection space. This approach eliminates noise sensitive processes, such as the calculation of the fundamental matrix, that are required in the factorization for the conventional perspective projection image, and a stable reconstruction is realized. Furthermore, the metric constraint in the conventional affine model is extended, and the metric constraint in the perspective projection condition is derived. It is shown that the reconstruction in Euclidean space is realized if the internal parameters of the camera are given.

关键词： Image reconstruction

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Application of a genetic algorithm in triangulation of a 3-D object surface

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International Journal of computers and Applications 2000年第2期22卷 73-77页

作者： Zhenyu, Chen Mbede, J.B. Yan, Zhou Dehua, Li Hanping, Hu State Commn. Res. Open Lab. Image P. Inst. Pattern Recog. Artif. Intell. Huazhong Univ. of Sci. and Technol. 430074 Wuhan China Intelligent Contr. and Robotics Lab. Dept. of Contr. Sci. and Engineering Huazhong Univ. of Sci. and Technol. 430074 Wuhan China Second Artillery Institute Huazhong Univ. of Sci. and Technol. Inst. Pattern Recog. Artif. Intell. Huazhong Univ. of Sci. and Technol. Second Artillery Institute China Wuhan University China Artificial Intelligence Department University of Edinburgh Inst. of AI and Pattern Recognition Huazhong Univ. of Sci. and Technol. China Cogn. Sci. Natl. Key Found. Res. P. Douala University Cameroon Tübingen University Germany Automatic Control Laboratory Darmstadt University Department of Service Cameroon Min. of National Education Robotics Laboratory Huazhong Univ. of Sci. and Technol. Wuhan China Assoc. Connectionnistes These-ACTH Rennes France IEEE Soc. of Robotics and Automation IEEE Society of Control Systems IASTED Assoc. Jeunes Chercheurs Robotique France Navy University of Engineering China Huazhong Univ. of Sci. and Technol. China Department of Computer Science Airforce Radar Acad. of Engineering China Inst. of P.R and AI Huazhong Univ. of Sci. and Technol.

This paper proposes a genetic-based algorithm for surface reconstruction of three-dimension (3-D) objects from a group of contours representing its section plane lines. The algorithm can optimize the triangulation of the surface of 3-D objects with a multi-objective optimization function to meet the needs of a wide range of applications. Further, a new crossover operator for triangulation and a new 3-D quadrilateral mutation operator are also introduced.

关键词： Object recognition

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