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Humanoid Robot 3-D Motion Simulation for Hardware Realization

Journal of Donghua University(English Edition) 2007年第6期24卷 713-717,722页

作者：曹曦赵群飞马培荪 Research Institute of Robotics Shanghai Jiaotong University Institute of Image Processing & Pattern Recognition Shanghai Jiaotong University

In this paper,three dimensions kinematics and kinetics simulation are discussed for hardware realization of a physical biped walking-chair *** direct and inverse close-form kinematics solution of the biped walking-chair robot is *** gaits are realized with the kinematics solution,including walking straight on level floor,going up stair,squatting down and standing *** Moment Point(ZMP)equation is analyzed considering the movement of the *** simulated biped walking-chair robot is used for mechanical design,gaits development and validation before they are tested on real robot.

关键词： Humanoid robot walking chair robot gait design 3D simulation ZMP

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Comparing and integrating alignment template and standard phrase-based statistical machine translation

Comparing and integrating alignment template and standard ph...

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8th International Conference on Intelligent Text processing and Computational Linguistics

作者： Xu, Lin Cao, Xiaoguang Zhang, Bufeng Li, Mu Lab. of Pattern Recognition and Intelligent System Image Processing Center BeiHang University China Al Lab. Computer Science and Technology Tianjing University China Microsoft Research Asia China

ISBN: (纸本)9783540709381

In statistical machine translation (SMT) research, phrase-based methods have been receiving more interest in recent years. In this paper, we first give a brief survey of phrase-based SMT framework, and then make detailed comparisons of two typical implementations: alignment template approach and standard phrase-based approach. At last, we propose an improved model to integrate alignment template into standard phrase-based SMT as a new feature in a log-linear model. Experimental results show that our method outperforms the baseline method.

关键词： Natural language processing systems

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Computer aided reconstruction and motion analysis of 3D mitral annulus 1

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4th International Conference on Functional Imaging and Modeling of the Heart, FIMH 2007

作者： Lei, Zhu Xin, Yang Liping, Yao Kun, Sun Institute of Image Processing and Pattern Recognition Shanghai Jiao Tong University Shanghai 200240 China Shanghai Children's Medical Center Attached to Shanghai Jiao Tong University Shanghai 200092 China

ISBN: (数字)9783540729075

ISBN: (纸本)3540729062

A computer aided reconstruction and motion analysis method of mitral annulus is presented in this paper. To begin with, the boundary points on mitral annulus are marked by doctors interactively. Since these points are not distributed uniformly and sequentially, secondly, it is necessary to re-arrange these points into a set of series points on a contour, the saddle-shaped mitral annulus. Thirdly, in order to analyze 3D mitral annulus motion, the mitral annulus is modeled by 3D non-uniform rational B-spline (NURBS). Fourthly, the dynamic parameters of the mitral annulus throughout the cardiac cycle are computed in a 3D Cartesian coordinate system. The experiments prove that the dynamic mitral annulus reconstruction and analysis program using computer aided method is provided a possible and convenient tool to diagnose and analyze the malfunction of mitral annulus. © Springer-Verlag berlin Heidelberg 2007.

关键词： Echocardiography

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On ancient coin classification

On ancient coin classification

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8th International Symposium on Virtual Reality, Archaeology, and Intelligent Cultural Heritage, VAST 2007

作者： Zaharieva, M. Huber-Mörk, R. Nölle, M. Kampel, M. TU Vienna Institute for Computer Aided Automation Pattern Recognition and Image Processing Group Favoritenstr. 9/183-2 A-1040 Vienna Austria ARC Seibersdorf Research GmbH Smart Systems Division High Performance Image Processing A-2444 Seibersdorf Austria ARC Seibersdorf Research GmbH Smart Systems Division Quantum Technologies A-2444 Seibersdorf Austria

ISBN: (纸本)9783905674019

Illegal trade and theft of coins appears to be a major part of the illegal antiques market. image based recognition of coins could substantially contribute to fight against it. Central component in the permanent identification and traceability of coins is the underlying classification and identification technology. The first step of a computer aided system is the segmentation of the coin in the image. Next, a feature extraction process measures the coin in order to describe the coin unambiguously. In this paper, we focus on the segmentation task, followed by a comparison of features relevant for coin classification. Results of the algorithms implemented are presented for an image database of ancient coins. © The Eurographics Association 2007.

关键词： image segmentation

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Analysis of the electro-optical characteristics of thin film electroluminescent devices

Analysis of the electro-optical characteristics of thin film...

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作者： Xu, Jianbo Lou, Junhui Yang, Xin Xiao, Tian Institute of Image Processing and Pattern Recognition Shanghai Jiaotong University Shanghai 200240 China Flat Panel Display Technology R and D Center SVA Electron Co. Ltd. 196 Ouyang Rd. Shanghai 200081 China

ISBN: (纸本)9787561752289

In this paper, we present the electro-optical characteristics of EL devices made by SVA. A Sawyer-Tower circuit has been set up to evaluate the luminous efficiency based on the measurements of luminance and transferred charge of the EL device. A program is developed to plot the luminance and efficiency as a function of voltage from the input of measurement data. These plots are useful for evaluating the performance of the EL devices and providing feedback for the optimization of thin film structure and processing parameters. When the modulation voltage is 30 V, it is shown that the luminance and efficiency of the yellow (ZnS: Mn) EL device is L30 =250 cd/m2 and η30 = 1.3 lm/W, respectively. Furthermore , the color spectra and the CIE color coordinates of various EL samples (green and blue) developed by SVA are evaluated and discussed.

关键词： Luminance

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Reducing the power consumption in the EL displays

Reducing the power consumption in the EL displays

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作者： Kang, Hao Li, Rongyu Yang, Xin Xiao, Tian Department of Electronic and Engineering Shanghai Jiaotong University Shanghai 200240 China Institute of Image Processing and Pattern Recognition Shanghai Jiaotong University Shanghai 200240 China Flat Panel Display Technology R and D Center SVA Electron Co. Ltd. 196 Ouyang Rd. Shanghai 200081 China

ISBN: (纸本)9787561752289

In the Electroluminescent display panels, the largest portion of power consumption of data driver circuits comes from charging and discharging quite large capacitive loads, data lines. The proposed multi-steps data driving method can reduce the panel AC power consumption into only a few percent of that of conventional ones if the number of steps is large enough. In the proposed driving method, external capacitors supply charge to loads in multi-steps manner, and the charge returns to the capacitors instead of being discharged to ground. This charge recycling is the basis of reduction of the panel AC power. In this paper, the author gives a hardware implementation of 4-steps voltage generator with a minimum complexity.

关键词： Electric power utilization

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Multi-label image segmentation via max-sum solver

Multi-label image segmentation via max-sum solver

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Conference on Computer Vision and pattern recognition (CVPR)

作者： Banislav Micusik Tomas Pajdla Pattern Recognition and Image Processing Group Inst. of Computer Aided Automation University of Technology Vienna Austria Center for Machine Perception Dpt. of Cybernetics Czech Technical University Czech Republic

We formulate single-image multi-label segmentation into regions coherent in texture and color as a MAX-SUM problem for which efficient linear programming based solvers have recently appeared. By handling more than two labels, we go beyond widespread binary segmentation methods, e.g., MIN-CUT or normalized cut based approaches. We show that the MAX-SUM solver is a very powerful tool for obtaining the MAP estimate of a Markov random field (MRF). We build the MRF on superpixels to speed up the segmentation while preserving color and texture. We propose new quality functions for setting the MRF, exploiting priors from small representative image seeds, provided either manually or automatically. We show that the proposed automatic segmentation method outperforms previous techniques in terms of the global consistency error evaluated on the Berkeley segmentation database.

关键词： image segmentation image databases Belief propagation pattern recognition image processing Automation Cybernetics Color Linear programming Markov random fields

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Example-Based Logical Labeling of Document Title Page images

Example-Based Logical Labeling of Document Title Page Images

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International Conference on Document Analysis and recognition

作者： J. van Beusekom D. Keysers F. Shafait T. Breuel Technical University of Kaiserslautern Germany German Research Center for Artificial Intelligence (DFKI) Kaiserslautern Germany Image Understanding and Pattern Recognition (IUPR) Research Group Technical University of Kaiserslautern Germany

This paper presents a flexible and effective example- based approach for labeling title pages which can be used for automated extraction of bibliographic data. The labels of interest are "title", "author", "abstract" and "affiliation". The method takes a set of labeled document layouts and a single unlabeled document layout as input and finds the best matching layout in the set. The labels of this layout are used to label the new layout. The similarity measure for layouts combines structural layout similarity and textural similarity on the block-level. Experimental results yield accuracy rates from 94.8% to 99.6% obtained on the publicly available MARG dataset. This shows that our lightweight method has equivalent and partially better performance when compared to other more complex labeling methods known from the literature.

关键词： Layout Labeling Databases Adaptation models Hidden Markov models Histograms image segmentation

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A Tongue-Print image Database for recognition

A Tongue-Print Image Database for Recognition

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International Conference on Machine Learning and Cybernetics (ICMLC)

作者： Zhi Liu Jing-Qi Yan David Zhang Qun-Lin Tang Institute of Image Processing and Pattern Recognition Shanghai Jiao Tong University hanghai China Biometrics Research Centre Hong Kong Polytechnic University Kowloon Hong Kong The Graduate School of Harbin Institute of Technology Shenzhen China

The tongue is a unique organ in that it can be stuck out of mouth for inspection, in this act offering a proof of life, and yet it is otherwise well protected in the mouth and is difficult to forge. The tongue also presents both geometric shape information and physiological texture information which are potentially useful in identity verification applications. Furthermore, the act of physically reaching or thrusting out is a convincing proof for the liveness. Despite these obvious advantages, little work has hitherto been done on tongue features. A primary factor for preventing such research is the lack of an available 3D tongue image database. In this paper, we present a newly developed 3D tongue image database, which includes both tongue geometric shape and surface textures of 134 subjects. This is the first attempt at making a 3D tongue image database available for the research community, with the ultimate goal of fostering the research on tongue biometrics. The new database can be a valuable resource for algorithm assessment, comparison and evaluation.

关键词： image databases image recognition Tongue Mouth Shape Inspection Protection Surface texture Biometrics Spatial databases

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Page Segmentation Competition

Page Segmentation Competition

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International Conference on Document Analysis and recognition

作者： A. Antonacopoulos B. Gatos D. Bridson Pattern Recognition and Image Analysis (PRImA) Research Lab School of Computing Science and Engineering University of Sanford Manchester UK Computational Intelligence Laboratory Institute of Informatics and Telecommunications National Center for Scientific Research Demokritos Athens Greece

This paper continues the authors' attempt to address the need for objective comparative evaluation of layout analysis methods in realistic circumstances. It describes the Page Segmentation Competition (modus operandi, dataset and evaluation criteria) held in the context of ICDAR2007 and presents the results of the evaluation of three candidate methods. The main objective of the competition was to compare the performance of such methods using scanned documents from commonly-occurring publications. The results indicate that although methods continue to mature, there is still a considerable need to develop robust methods that deal with everyday documents.

关键词： image analysis Performance analysis image segmentation Text analysis Optical character recognition software Information analysis pattern recognition Telecommunication computing Computational intelligence Informatics

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