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IEEE Conference on Decision and Control

作者： T. Gustafsson J. Vance H.R. Pota B.D. Rao M.M. Trivedi Computer Vision and Robotics Research Laboratory Electrical and Computer Engineering Department University of California San Diego La Jolla CA USA School of Electical Engineering University of New South Wales Canberra Australia

ISBN: (纸本)0780366387

Presents a method to obtain room transfer functions for applications in the design of intelligent systems for video conferencing. In these applications the acoustical dynamics, for example, affects the quality of the recorded speech signal and the ability to achieve accurate source localization. The first part of the paper gives results on the identification of parameterized room transfer functions. The second part presents a method to extrapolate room transfer functions from the identified models. The extrapolation is achieved by getting a functional form of the transfer function parameters which depends on the speaker and the microphone locations.

关键词： Transfer functions Loudspeakers Microphones Acoustics Videoconference Speech Transient response Partial differential equations Application software computer vision

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Complementary linear biases in spatial derivative estimation for improving geometry-driven diffusion processes

Complementary linear biases in spatial derivative estimation...

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15th International Conference on Pattern Recognition, ICPR 2000

作者： Toczyski, William D. Papanikolopoulos, Nikolaos P. Artificial Intelligence Robotics and Vision Laboratory Department of Computer Science and Engineering University of Minnesota 4-192 EE/CS Bldg. 200 Union Street SE MinneapolisMN55455 United States

ISBN: (纸本)0769507506

This paper introduces a broadly applicable technique for visibly improving the digitized, grey-level outputs produced by a host of iterative geometric diffusion methods. By replacing standard, central-difference estimates of discrete spatial gradients with alternating image derivative estimates that are offset by known, complementary biases, errors accumulated during iteration are reduced and the quality of geometric diffusions is improved. This unexpected synergy occurs at no added computational cost over central difference methods. Very simple to implement, the innovation is introduced at the level of spatial derivatives;hence, for a given process, any derived higher level mathematical properties - for example, group invariance or scale-space properties - can be preserved. © 2000 IEEE.

关键词： Iterative methods

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The effect of orientation map accuracy on fingerprint classification using PCA-MSOM

The effect of orientation map accuracy on fingerprint classi...

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International Conference on Knowledge-Based Intelligent Information engineering Systems (KES)

作者： A. Erol U. Halici Computer Vision and Artificial Neural Networks Research Laboratory Department of Electrical and Electronics Eng Middle East Technical University Ankara Turkey

Fingerprint classification is an important part of an identification system and there are various approaches for solving this problem. In any pattern classification system the most important part is the feature extraction process. For fingerprints the orientation map is the most common and promising feature to be used for classification. Two different orientation map extraction algorithms are compared to find the one that gives the most reliable features for the PCA-MSOM classifier.

关键词： Fingerprint recognition Image matching Image databases Feature extraction Biometrics computer vision Artificial neural networks Pattern classification Authentication Neural networks

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Automated CAD-guided robot path planning for spray painting of compound surfaces

Automated CAD-guided robot path planning for spray painting ...

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Proceedings. 2000 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS 2000) (Cat. No.00CH37113)

作者： Weihua Sheng Ning Xi Mumin Song Yifan Chen P. MacNeille Electrical and Computer Engineering Department Michigan State University East Lansing MI USA Scientific Research Laboratory Ford Motor Company Limited Dearborn MI USA

In this paper, a CAD-guided robot path generator is developed for the spray painting of compound surfaces commonly seen in automotive manufacturing. Instead of widely used parametric representation of surfaces, a planar facet scheme is used to approximate the painting surfaces. As a result, a new combinatorial gun path planning algorithm is proposed. In this algorithm, big patches are formed by stitching small surfaces together. Therefore, the path planning is solved based on the global characteristics of tire part, and the resulting spray gun paths are well-behaved in the sense of time, coverage, and wastage. The proposed algorithm has been implemented and tested using ROBCAD/sup TM//Paint.

关键词： robotics and automation Path planning Spraying Painting Paints Automotive engineering Testing Pulp manufacturing Manufacturing processes Humans

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Automated CAD-guided automobile part dimensional inspection

Automated CAD-guided automobile part dimensional inspection

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IEEE International Conference on robotics and Automation (ICRA)

作者： Weihua Sheng Ning Xi Mumin Song Yifan Chen J.S. Rankin Electrical and Computer Engineering Department Michigan State University East Lansing MI USA Scientific Research Laboratory Ford Motor Company Limited Dearborn MI USA

Structured light is one of the well-known methods in part dimensional inspection that have been successfully employed in various applications in the past decades. In this method, the positioning of the camera is very critical, which affects the accuracy and efficiency of the whole inspection system. Here we develop a CAD-guided camera positioning system to aid the 3-D part inspection. The geometric information in the CAD model of the inspected part and the camera model are used to plan camera configurations that satisfy certain task constraints. The overall system we propose can be applied to the 3-D inspection of parts with free-form surfaces, such as automobile door panels. Experiments on different parts show satisfying results.

关键词： Automotive components Inspection Cameras Solid modeling Coordinate measuring machines Equations Automotive engineering Application software Automobiles Manufacturing automation

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Some aspects of human-friendly control for movement-helping devices

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Artificial Life and robotics 2000年第4期4卷 198-205页

作者： Stefanov, Dimitar H. Bien, Zeungnam Song, Won-Kyung Institute of Mechanics Bulgarian Academy of Sciences Sofia Bulgaria Department of Electrical Engineering and Computer Sciences Human-Friendly Welfare Robot System Engineering Research Center (HWRS-ERC) KAIST Taejon Korea Bien's System Control Laboratory at KAIST Taejon Korea

Future welfare models should meet the needs of a large group of aged and disabled people. Present research and technology efforts in this direction are oriented toward the development of highly effective home-installed devices which will provide the user with continuous assistance in different everyday activities. The problems and needs of the elderly and the disabled vary from person to person over a large range, and with many serious requirements. Modern designs for such devices are oriented toward solutions where the user is less engaged in the control process, and the interaction between the device and the user ishuman-friendly, i.e., the devices should possess a high level of intelligence in their controls, actions, and interactions with the user, offering him/her a high level of comfort and functionality. This paper considers a mixed control mode as a better alternative for human-machine interactions for users with great movement disability. Some examples of easy direct control are discussed.

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Procedure of system-formation as process of the purpose achievement in manufacturing systems

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IFAC Proceedings Volumes 2000年第20期33卷 499-504页

作者： Peter Groumpos Salavat Kusimov Barry Ilyasov Larisa Ismagilova Roza Valeeva Ilmira Gerasimova University of Patras Department of Electrical and Computer Engineering Laboratory for Automation & Robotics GR-265 OORion Greece Fax: +50 61 997 309 Ufa State Aviation Technical University 12 K.Marx Street Ufa 450000 Russia Fax: (347-2) 22-29-18

There are considered the creation problems of organizational and manufacturing systems as formalized system-formation process according to the construction conception of resource-goal triads. Triad is formed and is used as the base element of description formalization of the purpose achievement procedure by means of system-formation process and connects three components necessary for creation of any system (reasons of system origin, existence purpose, possibility of creation). The proposed procedure of system-formation is a basis for development of theoretical bases for modeling and research of controlled manufacturing systems.

关键词： system concepts system methodology system design manufacturing systems

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A flexible IP active networks architecture 2

A flexible IP active networks architecture

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2nd International Working Conference on Active Networks, IWAN 2000

作者： Galis, Alex Plattner, Bernhard Smith, Jonathan M. Denazis, Spyros Moeller, Eckhard Guo, Hui Klein, Cornel Serrat, Joan Laarhuis, Jan Karetsos, George T. Todd, Chris University College London Torrington Place Department of Electrical and Electronic Engineering LondonWC1E 7JE United Kingdom The Swiss Federal Institute of Technology ETH Zurich Computer Engineering and Networks Laboratory ETH-Zentrum ZurichCH-8092 Switzerland University of Pennsylvania Department of CIS PhiladelphiaPA19104 United States Hitachi Europe Ltd Information and Telecommunication Laboratories 59 St Andrews Street CambridgeCB2 3BZ United Kingdom GMD- FOKUS Kaiserin-Augusta-Allee 31 BerlinD-10589 Germany Siemens ICN M RP 11 Hofmannstr. 51 MünchenD-81359 Germany KPN Research Dept Communications Architectures and open Systems P.O. Box 15000 GroningenAC9700 Netherlands Universitat Politècnica de Catalunya Dept Teoria del Senyal i Comunicacions ordi Girona 1-3 Barcelona08034 Spain National Technical University of Athens Telecommunications Laboratory Division of Electrical Engineering Zographou Athens15773 Greece

ISBN: (纸本)3540411798

This paper presents the main concepts of the IST Project FAIN "Future Active IP Networks" [10], a three-year collaborative research project, whose main task is to develop and validate an open, flexible, programmable and dependable network architecture based on a novel active node approach. This generic architecture for active networks is an innovative integration of active networking, distributed object and mobile agent technology. Starting from the definition of a business model that underlines the FAIN architecture, we identify three key working areas for contribution: the active node platform layer, the service programming environment and a built-in management system. The active node platform layer of the FAIN Active Node is comprised of the kernel Operating System, a node resource access control framework, and active components for management, security and service pro-H. vision. These elements provide the foundations for Execution Environments so that they can operate in an independent manner. A novel service programming environment is envisaged to enable the dynamic creation or update and to secure deployment and operation of protocols. Such an environment supports various role-specific ways of deployment, e.g. application-specific signalling or operator-governed network control signalling. © Springer-Verlag Berlin Heidelberg 2000.

关键词： Network architecture

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Multi-modal medical volumes fusion by surface matching

Multi-modal medical volumes fusion by surface matching

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5th International Symposium on Signal Processing and Its Applications, ISSPA 1999

作者： Eldeib, Ayman M. Yamany, Sameh M. Farag, Aly Computer Vision and Image Processing Laboratory University of Louisville Department of Electrical Engineering Louisville KY 40292 United States

ISBN: (纸本)1864354518

Presents a fast, six degrees of freedom, registration technique to accurately locate the position and orientation of medical volumes (e.g. CT, MRI) with respect to each other for the same patient. The technique uses surface registration and maximization of mutual information. We have developed a novel technique for surface registration which produces highly accurate results when registering two different volumes of the same individual generated from the same modality, such as preoperative MR and intraoperative MR volumes. In case surface registration is not able to accurately register the different volumes, the result is enhanced by multi-modal volume registration. The gain of this combination is to have an accurate alignment and to reduce time needed for registration. For the multi-modal volume registration, the maximization of mutual information (MI) as a matching criterion is used based on genetic algorithms (GA) as a search engine. Our results demonstrate that our registration technique allows for fast, accurate, robust and completely automatic registration of multimodality medical volumes. © 1999 IEEE.

关键词： Genetic algorithms

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The mapping of texture on VR polygonal models 2

The mapping of texture on VR polygonal models

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2nd International Conference on 3-D Digital Imaging and Modeling, 3DIM 1999

作者： Laurendeau, Denis Bertrand, Nathalie Houde, Régis Computer Vision and Systems Laboratory Department of Electrical Engineering and Computer Engineering Laval University QuebecQCG1K 7P4 Canada Robotics Division Hydro Quebec Research Institute VarennesQCJ3X 1S1 Canada

ISBN: (纸本)0769500625

The paper addresses the problem of choosing automatically, and without user intervention, the best possible 2D image that should be used to map as a texture on polygons of a geometric model of complex scenes made of several objects. The geometric models and the texture data are obtained separately: the models are built from range data while the texture information is obtained from 2D color images of the scene. The system does not make any assumption on the way the texture data has been acquired. Texture selection results are presented for an indoor scene. © 1999 IEEE.

关键词： Image texture

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