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International Conference on Information Visualisation (IV)

作者： J. Schadlich K. Mukasa Computer Science Department Kaiserslautern University Kaiserslautern Germany Center for Human-Machine-Interaction Kaiserslautern University Kaiserslautern Germany

This work proposes a user-oriented approach as a basis for proper information visualization in the production automation area. A total consideration of the user consists of analyzing his tasks, context and profile. In order to implement this in the visualization process, an intelligent framework that is based on a multi agent system is developed. The advantage is that the tasks can be distributed to several small and manageable agents. The long term objective is to develop a working platform for the user-oriented information visualization.

关键词： Visualization Production humans Office automation computer displays Man machine systems computer science Intelligent agent Machine intelligence Machine tools

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A Particle Filter without Dynamics for Robust 3D Face Tracking

A Particle Filter without Dynamics for Robust 3D Face Tracki...

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IEEE computer Society Conference on computer Vision and Pattern Recognition Workshops (CVPRW)

作者： Le Lu Xiang-Tian Dai G. Hager Computational Interaction and Robotics Lab Computer Science Department Johns Hopkins University Baltimore MD USA

Particle filtering is a very popular technique for sequential state estimation problem. However its convergence greatly depends on the balance between the number of particles/hypotheses and the fitness of the dynamic model. In particular, in cases where the dynamics are complex or poorly modeled, thousands of particles are usually required for real applications. This paper presents a hybrid sampling solution that combines the sampling in the image feature space and in the state space via RANSAC and particle filtering, respectively. We show that the number of particles can be reduced to dozens for a full 3D tracking problem which contains considerable noise of different types. For unexpected motions, a specific set of dynamics may not exist, but it is avoided in our algorithm. The theoretical convergence proof [1, 3] for particle filtering when integrating RANSAC is difficult, but we address this problem by analyzing the likelihood distribution of particles from a real tracking example. The sampling efficiency (on the more likely areas) is much higher by the use of RANSAC. We also discuss the tracking quality measurement in the sense of entropy or statistical testing. The algorithm has been applied to the problem of 3D face pose tracking with changing moderate or intense expressions. We demonstrate the validity of our approach with several video sequences acquired in an unstructured environment.

关键词： Particle filters Robustness Particle tracking Filtering Image sampling State estimation State-space methods Noise reduction Convergence Sampling methods

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Visualization of design knowledge component relationships to facilitate reuse

Visualization of design knowledge component relationships to...

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IEEE International Conference on Information Reuse and Integration (IRI)

作者： S. Wahid J.L. Smith B. Berry C.M. Chewar D.S. McCrickard Center for Human-Computer Interaction and Department of Computer Science Virginia Polytechnic Institute and State University Blacksburg VA USA Department of Electrical Engineering and Computer Science United States Military Academy West Point NY USA

Within the software development process, reuse at the requirements level has become an increasingly more compelling notion. Following a human-centric approach, this work focuses on both requirements and design solution reuse using a design knowledge repository. In recent years, many improvements have been made to increase reuse through design knowledge repositories, but retrieval of knowledge in the context of design activities continues to be a formidable challenge. We propose a new system, called CERVi, to browse a repository through visualization by exploiting relationships between units of knowledge (in our case, claims). These relationships are key to finding the most appropriate reusable knowledge based on design conditions. Testing shows that CERVi enhances the design knowledge selection process and helps users proceed through structured design decision making. Our approach would be most useful to those interested in unlocking the potential of design knowledge reuse.

关键词： Visualization Libraries human computer interaction Programming Monitoring computer science Testing Process design Decision making Software development management

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Motion capture from inertial sensing for untethered humanoid teleoperation

Motion capture from inertial sensing for untethered humanoid...

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2004 4th IEEE-RAS International Conference on humanoid Robots

作者： Miller, Nathan Jenkins, Odest Chadwicke Kallmann, Marcelo Matarić, Maja J. Department of Computer Science California State Univ. Bakersfield Bakersfield CA 93311 Interaction Lab. Ctr. for Robotics and Embedded Syst. 941 W. 37th Place SAL 300 Los Angeles CA 90089 United States

ISBN: (纸本)0780388631

We describe the design of a modular system for untethered real-time kinematic motion capture using sensors with inertial measuring units (IMUs). Our system is comprised of a set of small and lightweight sensors. Each sensor provides its own global orientation (3 degrees of freedom) and is physically and computationally independent, requiring only external communication. Orientation information from sensors is communicated via wireless to host computer for processing. We present results of the real-time usage of our untethered motion capture system for teleoperating the NASA Robonaut 1. We also discuss potential applications for untethered motion capture with respect to humanoid robotics. © 2004 IEEE.

关键词： Robotics

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Time Design: Organizers and Panel Co-Chairs

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Proceedings of the human Factors and Ergonomics Society Annual Meeting 2004年第3期48卷 703 - 707页

作者： Michael Hildebrandt Esa M. Rantanen Human-Computer Interaction Group Department of Computer Science University of York York YO10 5DD UK Institute of Aviation Aviation HF Division University of Illinois at Urbana-Champaign Willard Airport Savoy IL 61874

The goal of this panel is to discuss theoretical and methodological approaches that may inform and support the design of temporal aspects of interactive systems. Time Design is an emerging research and development domain that emphasizes the functional, causal role of time in human control behavior. It draws on a diverse literature on time in cognitive psychology, psychophysics, sociology, computer science, engineering, human Factors and HCI. Relevant research domains include heuristics and biases in temporal decisions, temporal aspects of human-automation interaction, planning and scheduling, visualisation of temporal information, and the timing of alarms and interruptions.

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Usability-supporting architectural patterns 04

Usability-supporting architectural patterns

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International Conference on Software Engineering (ICSE)

作者： L. Bass B.E. John N. Juristo M.-I. Sanchez-Segura Software Engineering Institute Carnegie Mellon University USA Human Computer Interaction Institute Carnegie Mellon University USA School of Computing Technical University Madrid Spain Computer Science Department Carlos III Technical University of Madrid Spain

ISBN: (纸本)9780769521633

Software architects have techniques to deal with many quality attributes such as performance, reliability, and maintainability. Usability, however, has traditionally been concerned primarily with presentation and not been a concern of software architects beyond separating the user interface from the remainder of the application. In this paper, we present usability-supporting architectural patterns. Each pattern describes a usability concern that is not supported by separation alone. For each concern, a usability-supporting architectural pattern provides the forces from the characteristics of the task and environment, the human, and the state of the software to motivate an implementation independent solution cast in terms of the responsibilities that must be fulfilled to satisfy the forces. Furthermore, each pattern includes a sample solution implemented in the context of an overriding separation based pattern such as J2EE Model View Controller.

关键词： Usability User interfaces Application software Software engineering humans computer science NASA Software maintenance Software performance Software quality

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Haptic feedback for pen computing: Directions and strategies

Haptic feedback for pen computing: Directions and strategies

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Conference on human Factors in Computing Systems, CHI EA 2004

作者： Poupyrev, Ivan Okabe, Makoto Maruyama, Shigeaki Interaction Lab. Sony CSL 3-14-13 Higashigotanda Shinagawa Tokyo 141-0022 Japan Department of Computer Science University of Tokyo 7-3-1 Hongo Bunkyo Tokyo 113-8654 Japan Micro Device Center Sony EMCS 2-15-3 Konan Minato Tokyo 108-6201 Japan

ISBN: (纸本)1581137036

We seek to improve the experience of using pen computing devices by augmenting them with haptic, tactile feedback displays. We present the design of the haptic display for pen computers, and explore interaction techniques that allow users to feel GUI elements, textures, photographs and other interface elements with a pen. We discuss research directions in haptic displays for pen devices and report results of an early experimental study that evaluated the benefits of tactile feedback in pen computing. © 2004 ACM.

关键词： Display devices

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"Inviteful" engineering: Student perceptions of industrial engineering

"Inviteful" engineering: Student perceptions of industrial e...

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ASEE 2004 Annual Conference and Exposition, "Engineering Researchs New Heights"

作者： Trytten, Deborah A. Shehab, Randa L. Rhoads, Teri Reed Fleener, M. Jayne Harris, Betty J. Reynolds, Anne Walden, Susan E. Moore-Furneaux, Sandra Kay Kvach, Elizabeth Warram, Kim R. Murphy, Teri J. University of Oklahoma School of Computer Science University of Oklahoma Department of Industrial Engineering Human Technology Interaction Center University of Oklahoma College of Engineering School of Industrial Engineering University of Oklahoma Graduate Studies and Research College of Education Women's Studies Program Department of Anthropology University of Oklahoma Dept. of Instructional Leadership University of Oklahoma Res. Institute for STEM Education University of Oklahoma Department of Communication University of Oklahoma Department of Mathematics University of Oklahoma

Interviews of twenty-six Industrial Engineering students and graduates were conducted during the first year of a three year study of the unexpected attainment of gender parity in the School of Industrial Engineering at the University of Oklahoma (OU). An analysis of the pattern of participant responses gives insight into industrial engineering (IE) student perceptions of IE. The perceptions were grouped into three broad themes: Career Profile, Discipline Profile, and Discipline Meta-Profile. The Career Profile includes the availability of multiple career paths and flexible careers in this discipline in addition to the potential for the attainment of status through entry into management. People-oriented, broad, and systems-oriented are terms that were used to describe the Discipline Profile. Discipline Meta-Profile is used to describe the participant's perception of other people's perceptions of industrial engineering (i.e. what IE students think other people think). These participants felt that other engineers think of IE as easy, or "imaginary" engineering. The participants also thought that the discipline is invisible, even to other engineers. While the meta-perception of IE might seem to be problematic for the discipline, many of the participants reject the meta-perception. Some participants recognized that IE's focus on people and systems is simply different than other engineering disciplines, not necessarily easier. Other participants felt the potential to enter into management outweighed the discipline meta-perception. One student summarized the response particularly well when he noted that IE is "inviteful" engineering.

关键词： Engineering education

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Editorial

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Journal of Web Semantics 2004年第4期1卷 323-324页

作者： Katia Sycara John Mylopoulis Robotics Institute School of Computer Science Human-Computer Interaction Institute Language Technologies Institute (LTI) Center for Advanced Learning and Discovery Carnegie Mellon University Newell-Simon Hall 1602D CMU Pittsburgh PA 15213 USA Department of Computer Science University of Toronto 40 St. George St. Bahen Building Rm. 7266 Toronto Ont. Canada M5S 2E4

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Low-complexity predictive trellis coded quantization of wideband speech LSF parameters

Low-complexity predictive trellis coded quantization of wide...

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Proceedings - IEEE International Conference on Acoustics, Speech, and Signal Processing

作者： Shin, Yongwon Kong, Sangwon Fischer, Thomas R. Son, Changyong Lee, Yongbeom Telecommunication R and D Center Samsung Electronics Co. Suwon Korea Republic of Sch. of Elec. Eng. and Comp. Science Hanyang Univ. Ansan Korea Republic of Sch. of Elec. Eng. and Comp. Science Washington State Univ. Pullman WA 99163 United States Human and Computer Interaction Lab. Samsung Advanced Inst. of Tech. Kiheung-Eup Yongin Korea Republic of

In this paper, low-complexity block-constrained trellis coded quantization (BC-TCQ) structures are introduced, and a predictive BC-TCQ encoding method is developed for quantization of line spectrum frequencies (LSF) parameters for wideband speech coding applications. The performance is compared to the linear predictive coding (LPC) vector quantizers used in the AMR-WB (ITUG.722.2) speech coding standard, demonstrating reduction in spectral distortion and significant reduction in encoding complexity.

关键词： Speech processing

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