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IEEE International Conference on Mechatronics and Automation

作者： Gen'ichi Yasuda Bin Ge Department of Human and Computer Intelligence Nagasaki Institute of Applied Science Nagasaki Japan Liao Ning Key Laboratory of Intelligent Information Processing Economic & Technical Development Zone Dalian University Dalian China

This paper presents an experimental study on environment recognition and movement control for multiagent robotic soccer using wheeled mobile robots. A color image segmentation method based on YUV color information of each pixel of the color image is applied to the object recognition. The color image segmentation is performed using the tables that transform each value in a pixel to membership in several color classes, where the lower and higher threshold values of Y, U, and V are determined and described for the sample color markers. The position of objects on the field is efficiently and accurately calculated using a monocular camera. A common image processing method is used to detect landmarks such as corners/edges in the environment. A movement control algorithm is implemented based on the distance and orientation to the target. Experimental results of real-time movement control are also presented.

关键词： Mobile robots Robot vision systems Color Image processing Wheels Cameras Control systems Object recognition Image segmentation Pixel

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An Articulation Training System with Intelligent Interface and Multimode Feedbacks to Articulation Disorders

An Articulation Training System with Intelligent Interface a...

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International Conference on Asian Language Processing (IALP)

作者： Yeou-Jiunn Chen Jiunn-Liang Wu Hui-Mei Yang Chung-Hsien Wu Chih-Chang Chen Shan-Shan Ju Department of Electrical Engineering Southern Taiwan University Tainan Taiwan Department of Otolaryngology National Cheng Kung University Hospital Tainan County Taiwan Department of Computer Science and Information Engineering National Cheng Kung University Tainan County Taiwan Human-Interaction Technology Center Industrial Technology and Research Institute Tainan County Taiwan

Articulation training with many kinds of stimulus and messages such as visual, voice, and articulatory information can teach user to pronounce correctly and improve user's articulatory ability. In this paper, an articulation training system with intelligent interface and multimode feedbacks is proposed to improve the performance of articulation training. Clinical knowledge of speech evaluation is used to design the dependent network. Then, automatic speech recognition with dependent network is applied to identify the pronunciation errors. Besides, hierarchical Bayesian network is proposed to recognize user's emotion from speeches. With the information of pronunciation errors and user's emotional state, the articulation training sentences can be dynamically selected. Finally, a 3D facial animation is provided to teach users to pronounce a sentence by using speech, lip motion, and tongue motion. Experimental results reveal the usefulness of proposed method and system.

关键词： Intelligent systems Feedback Automatic speech recognition computer errors Emotion recognition Industrial training Hospitals Bayesian methods Facial animation Tongue

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Tangible augmented user interface for interactive simulation of the jaw motion

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Journal of information and Computational science 2008年第5期5卷 2071-2076页

作者： Ji, Lianen Lu, You Zhang, Fengjun Department of Computer Science and Technology China University of Petroleum Beijing 102249 China Laboratory of Human-Computer Interaction and Intelligent Information Processing Institute of Software Chinese Academy of Sciences Beijing 100080 China

This paper presents a novel 3D interactive system for simulation and visualization of the human jaw motion. Based on the visual tracking technique, teeth plaster cast and marker cards is used for manipulating virtual teeth model and controlling the simulation of jaw motion. Through introducing their interactive semantic attributes, these physical interface elements are classified into various interaction types. Furthermore, various interaction tasks and techniques are seamlessly merged into a uniform interface framework, which integrates physical space with virtual space together. This innovative 3D interface can effectively exploit the dentist's existing skills and provide more intuitive and natural 3D interaction techniques than traditional ones. 1548-7741/Copyright © 2008 Binary information Press October 2008.

关键词： Augmented reality

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Use of unsupervised clustering to characterize learner behaviors and affective states while using an intelligent tutoring system

Use of unsupervised clustering to characterize learner behav...

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16th International Conference on computers in Education, ICCE 2008

作者： Rodrigo, Ma.Mercedes T. Anglo, Elizabeth A. Sugay, Jessica O. Baker, Ryan S.J.D. Department of Information Systems and Computer Science Ateneo de Manila University Loyola Heights Quezon City Philippines Human-Computer Interaction Institute Carnegie Mellon University Pittsburgh PA United States

ISBN: (纸本)9789868473522

This paper presents results from a preliminary analysis of interaction and human observation data gathered from students using an Aplusix, an intelligent tutoring system for algebra. Towards the development of automatic detectors of behavior and affect, this study tried to determine whether it was possible to identify distinct groups of students based on interaction logs alone. Using unsupervised clustering, we were able to identify that student behaviors within the software cluster into two categories, Clusters 0 and 1, associated with differing higher-level behaviors and affective states. Cluster 0 tended to reflect more collaborative work, whereas Cluster 1 reflected more solitary work. Cluster 1 students tended to exhibit more flow, suggesting that students in flow tend to work in a more individual fashion. An examination of the keystrokes used by each group showed that Cluster 0 used the arrow keys and cursor keys significantly more than Cluster 1. The Cluster 1, on the other hand, tended to type more mathematical operators or use the duplicate command more frequently than Cluster 0. This implies that frequent use of mathematical operators and frequent duplication of the problem may be evidence of flow within Aplusix.

关键词： Mathematical operators

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Virtual reality technology assisting communication apprehension

Virtual reality technology assisting communication apprehens...

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2008 International Conference on computer Graphics and Virtual Reality, CGVR 2008

作者： North, Max M. Hill, Jeremy Aikhuele, Ainonehi North, Sarah M. Virtual Reality Technology Laboratory Engineering Technology and Management Southern Polytechnic State University United States Human-Computer Interaction Group Computer and Information Sciences Department Clark Atlanta University United States

ISBN: (纸本)1601320574

This study investigates the effectiveness of the application of Virtual Reality Training (VRT) in the treatment of Communication Apprehension (CA). The participants were thirty undergraduate volunteer students enrolled at the university level. Virtual reality software and hardware were used to create a virtual auditorium scene for this training. Over five sessions, participants were subjected to virtual public speaking scenarios of varying intensity. Subjective Units of Disturbance (SUD) scale was used to measure the participants' anxiety levels. The average level of anxiety reported during post-test was significantly less than that of the pre-test. The preliminary results indicated that VRT could be used as an effective method for reducing CA in clients and allow them to become involved in discussions and presentations more comfortably.

关键词： Virtual reality

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Computing word-pair antonymy

Computing word-pair antonymy

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2008 Conference on Empirical Methods in Natural Language Processing, EMNLP 2008, Co-located with AMTA 2008 and the International Workshop on Spoken Language Translation

作者： Mohammad, Saif Dorr, Bonnie Hirst, Graeme Laboratory for Computational Linguistics and Information Processing Institute for Advanced Computer Studies University of Maryland United States Computer Science Human Language Technology Center of Excellence United States Department of Computer Science University of Toronto Canada

Knowing the degree of antonymy between words has widespread applications in natural language processing. Manually-created lexicons have limited coverage and do not include most semantically contrasting word pairs. We present a new automatic and empirical measure of antonymy that combines corpus statistics with the structure of a published thesaurus. The approach is evaluated on a set of closest-opposite questions, obtaining a precision of over 80%. Along the way, we discuss what humans consider antonymous and how antonymy manifests itself in utterances. © 2008 Association for Computational Linguistics.

关键词： Natural language processing systems

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On the problem of determination of spring stiffness parameters for spring-mesh models

On the problem of determination of spring stiffness paramete...

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Medicine Meets Virtual Reality 16 - Parallel, Combinatorial, Convergent: NextMed by Design, MMVR 2008

作者： Quang Huy Viet, Huynh Hirai, Shinichi Shirai, Yoshiaki Yamaguchi, Satoshi Tanaka, Hiromi T. Kawasaki, Hiroshi Kawai, Yukiko Computer Vision and Graphics Laboratory Department of Information and Computer Science Saitama University Saitama Japan Laboratory for Integrated Machine Intelligence Department of Robotics Ritsumeikan University Kusatsu Japan Computer Vision Lab. Department of Human and Computer Intelligence Ritsumeikan University Kusatsu Japan Kawai Lab. Department of Computer Science Kyoto Sangyo University Kyoto Japan

ISBN: (纸本)9781586038229

On account of having real-time behavior and being easy to implement, spring meshes have been used for modeling deformable objects. Determining spring stiffness parameters for simulation of soft objects with high accuracy still remains a challenge. Allen Van Gelder derived an approximate formula for determining spring stiffness parameters based on strain analysis. Even though the experimental result showed the effectiveness, the method has not been investigated from a quantitative point of view. In this paper we propose a quantitative method for determining spring stiffness parameters. Moreover we propose a method to improve the accuracy by way of introducing torsional spring into the conventional spring mesh model. © 2008 The authors. All rights reserved.

关键词： Stiffness matrix

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Pen-top feedback for paper-based interfaces

Pen-top feedback for paper-based interfaces

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19th Annual ACM Symposium on User Interface Software and Technology 2006, UIST'06

作者： Liao, Chunyuan Guimbretière, François Loeckenhoff, Corinna E. Human-Computer Interaction Laboratory Department of Computer Science University of Maryland College Park MD 20770 United States National Institute on Aging Box 03 Gerontology Research Center 5600 Nathan Shock Drive Baltimore MD 21224 United States

ISBN: (纸本)1595933131

Current paper-based interfaces such as PapierCraft, provide very little feedback and this limits the scope of possible interactions. So far, there has been little systematic exploration of the structure, constraints, and contingencies of feedback-mechanisms in paper-based interaction systems for paper-only environments. We identify three levels of feedback: discovery feedback (e.g., to aid with menu learning), status-indication feedback (e.g., for error detection), and task feedback (e.g., to aid in a search task). Using three modalities (visual, tactile, and auditory) which can be easily implemented on a pen-sized computer, we introduce a conceptual matrix to guide systematic research on pen-top feedback for paper-based interfaces. Using this matrix, we implemented a multimodal pen prototype demonstrating the potential of our approach. We conducted an experiment that confirmed the efficacy of our design in helping users discover a new interface and identify and correct their errors. Copyright 2006 ACM.

关键词： Paper

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Pairwise document similarity in large collections with MapReduce 46

Pairwise document similarity in large collections with MapRe...

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46th Annual Meeting of the Association for Computational Linguistics: human Language Technologies, ACL 2008

作者： Elsayed, Tamer Lin, Jimmy Oard, Douglas W. Human Language Technology Center of Excellence UMIACS Laboratory for Computational Linguistics and Information Processing University of Maryland College ParkMD20742 United States Department of Computer Science The iSchool College of Information Studies

This paper presents a MapReduce algorithm for computing pairwise document similarity in large document collections. MapReduce is an attractive framework because it allows us to decompose the inner products involved in computing document similarity into separate multiplication and summation stages in a way that is well matched to efficient disk access patterns across several machines. On a collection consisting of approximately 900,000 newswire articles, our algorithm exhibits linear growth in running time and space in terms of the number of documents. © 2008 Association for Computational Linguistics.

关键词： MapReduce

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一种肤色干扰下的变形手势跟踪方法

一种肤色干扰下的变形手势跟踪方法

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第六届智能CAD与数字娱乐学术会议

作者： Liu Yujin 刘玉进 Cai Yong 蔡勇 Wu Huiyue 武汇岳 Zhang Fengjun 张凤军 Dai Guozhong 戴国忠 School of Computer Science and Technology Southwest University of Science and Technology Mianyang 西南科技大学计算机科学与技术学院绵阳 621002 中国科学院软件研究所人机交互技术与智能信息处理实验室北京 100190 School of Computer Science and Technology Southwest University of Science and Technology Mianyang 西南科技大学计算机科学与技术学院绵阳 621002 Laboratory of Human-Computer Interaction and Intelligent Information Processing Institute of Softwa 中国科学院软件研究所人机交互技术与智能信息处理实验室北京 100190

本文介绍了一种基于单目视觉的肤色干扰下的变形手势跟踪方法。根据跟踪过程中所用到的基本手势特征，提出了一种基于PGH(成对几何直方图)的静态手势识别方法。为了解决跟踪过程中的肤色干扰问题，实现了基于Kalman滤波器的手势预测跟... 详细信息

本文介绍了一种基于单目视觉的肤色干扰下的变形手势跟踪方法。根据跟踪过程中所用到的基本手势特征，提出了一种基于PGH(成对几何直方图)的静态手势识别方法。为了解决跟踪过程中的肤色干扰问题，实现了基于Kalman滤波器的手势预测跟踪。为了解决跟踪过程中的初始化问题，提出了一种基于层次结构的跟踪初始化解决方案。实验结果表明，该方法能够在肤色干扰的情况下有效地对变形手势进行跟踪，并能够满足基于视觉的实时人机交互的要求。

关键词：手势识别变形手势肤色干扰视觉跟踪

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