检索结果-内蒙古大学图书馆

Conference on computer Vision and Pattern Recognition (CVPR)

作者： Wai-Shun Tong Chi-Keung Tang Vision and Graphics Group Computer Science Department Hong Kong University of Science and Technology Hong Kong China

ISBN: (纸本)0769519008

A "graphics for vision" approach is proposed to address the problem of reconstruction from a large and imperfect data set: reconstruction on demand by tensor voting, or ROD-TV. ROD-TV simultaneously delivers good efficiency and robustness, by adapting to a continuum of primitive connectivity, view dependence, and levels of detail (LOD). Locally inferred surface elements are robust to noise and better capture local shapes. By inferring per-vertex normals at sub-voxel precision on the fly, we can achieve interpolative shading. Since these missing details can be recovered at the current level of detail, our result is not upper bounded by the scanning resolution. By relaxing the mesh connectivity requirement, we extend ROD-TV and propose a simple but effective multiscale feature extraction algorithm. ROD-TV consists of a hierarchical data structure that encodes different levels of detail. The local reconstruction algorithm is tensor voting. It is applied on demand to the visible subset of data at a desired level of detail, by traversing the data hierarchy and collecting tensorial support in a neighborhood. We compare our approach and present encouraging results.

关键词： Tensile stress Voting Noise robustness graphics Surface reconstruction Noise shaping Shape Feature extraction Data structures Reconstruction algorithms

来源：评论

学校读者我要写书评

暂无评论

Communication via eye blinks and eyebrow raises: Video-based human-computer interfaces

引用

Universal Access in the Information Society 2003年第4期2卷 359-373页

作者： Grauman, K. Betke, M. Lombardi, J. Gips, J. Bradski, G.R. Vision Interface Group AI Laboratory Massachusetts Institute of Technology 77 Massachusetts Avenue CambridgeMA02139 United States Computer Science Department Boston University 111 Cummington St BostonMA02215 United States EagleEyes Computer Science Department Boston College Fulton Hall Chestnut HillMA02467 United States Vision Graphics and Pattern Recognition Microcomputer Research Laboratory Intel Corporation SC12-303 2200 Mission College Blvd Santa ClaraCA95054-1537 United States

Two video-based human-computer interaction tools are introduced that can activate a binary switch and issue a selection command. "BlinkLink," as the first tool is called, automatically detects a user's eye blinks and accurately measures their durations. The system is intended to provide an alternate input modality to allow people with severe disabilities to access a computer. Voluntary long blinks trigger mouse clicks, while involuntary short blinks are ignored. The system enables communication using "blink patterns:" sequences of long and short blinks which are interpreted as semiotic messages. The second tool, "EyebrowClicker," automatically detects when a user raises his or her eyebrows and then triggers a mouse click. Both systems can initialize themselves, track the eyes at frame rate, and recover in the event of errors. No special lighting is required. The systems have been tested with interactive games and a spelling program. Results demonstrate overall detection accuracy of 95.6% for BlinkLink and 89.0% for EyebrowClicker. © Springer-Verlag 2003.

关键词： computer vision

来源：评论

学校读者我要写书评

暂无评论

A comparison of Gaussian and mean curvatures estimation methods on triangular meshes

A comparison of Gaussian and mean curvatures estimation meth...

引用

IEEE International Conference on Robotics and Automation (ICRA)

作者： T. Surazhsky E. Magid O. Soldea G. Elber E. Rivlin Center for Graphics and Geometric Computing Israel Institute of Technology Haifa Israel Applied Mathematics Department Faculty of Computer Science

Estimating intrinsic geometric properties of a surface from a polygonal mesh obtained from range data is an important stage of numerous algorithms in computer and robot vision, computer graphics, geometric modeling, industrial and biomedical engineering. This work considers different computational schemes for local estimation of intrinsic curvature geometric properties. Five different algorithms and their modifications were tested on triangular meshes that represent tessellations of synthetic geometric models. The results were compared with the analytically computed values of the Gaussian and mean curvatures of the non-uniform rational B-spline (NURBs) surfaces, these meshes originated from. This work manifests the best algorithms suited for that indeed different algorithms should be employed to compute the Gaussian and mean curvatures.

关键词： Biomedical computing Solid modeling Spline computer vision Service robots Robot vision systems computer graphics computer industry Biomedical engineering Testing

来源：评论

学校读者我要写书评

暂无评论

Partial modification for system enhancement of the continuous catalyst regeneration system

Partial modification for system enhancement of the continuou...

引用

IEEE Conference on Control technology and Applications (CCTA)

作者： A.K. Abdel-Gawad H. Ashour E.E. Zakzouk Control Engineering and Automated Systems College of Engineering and Technology Arab Academy for Science Technology and Maritime Transport Syria College of Engineering and Technology Arab Academy for Science and Technology and Maritime Transport Department and Professor of Computer Control Engineering College of Engineering and Technology Arab Academy for Science Technology and Maritime Transport Syria Head of the Department and Professor of Computer Control Engineering Arab Academy for Science and Technology and Maritime Transport

This paper introduces an effective modification for the catalyst regeneration system used to improve the octane number of the complex naphtha reformers in the refiners. Thinking for modification is initiated due to the serious problems that may happen as a result of uncontrolled temperature rise over the permissible limits in the regeneration tower (problems have been actually happened in some companies). Modification methodology depends on an addition of a new temperature element into the most effective area of the regeneration tower, and then a fuzzy control module is built in the existing distributed control system (DCS) to automatically control the system behavior. This approach will enhance system performance and improve factor of safety over the supplier regulation, which mainly depends on the human behavior, and tracing the temperature before the critical area. Through this paper, the catalyst regeneration process is described, the temperature rise problem is classified and several solutions to prevent such problem are proposed. Simulated results are presented to show system response with the proposed modification and to validate such solution for practical implementation.

关键词： Poles and towers Temperature dependence Distributed control Fuzzy control Automatic control Temperature control Control systems System performance Safety Humans

来源：评论

学校读者我要写书评

暂无评论

Management Information System for Microfinance Institutions

引用

Asia-Pacific Journal of Rural Development 2003年第2期13卷 79 - 86页

作者： Chennapragada Ram Seshagiri Rao Asst. Professor Computer Science Dr. B. V. Raju Institute of Technology Medak Dt. Hyderabad AP India.

来源：评论

学校读者我要写书评

暂无评论

E‐fulfillment: the strategy and operational requirements

引用

Logistics Information Management 2003年第5期16卷 350-362页

作者： J. Michael Tarn Muhammad A. Razi H. Joseph Wen Angel A. Perez Associate Professor of Computer Information Systems at the Department of Business Information Systems Haworth College of Business Western Michigan University Kalamazoo Michigan USA Assistant Professor of Computer Information Systems at the Department of Business Information Systems Haworth College of Business Western Michigan University Kalamazoo Michigan USA Associate Professor of Information Systems at the Department of Applied Computer Science College of Applied Science and Technology Illinois State University Normal Illinois USA School of Management New Jersey Institute of Technology Newark New Jersey USA

An e‐fulfillment system is designed to meet the high order volume and stringent customer service requirements of global business‐to‐consumer e‐commerce. The system converts the traditional warehouse into a multi‐channel e‐fulfillment center. In the e‐commerce environment, some of the toughest decisions must be made on little or no hard information. In this study, the nature of e‐business and the typical fulfillment process are discussed. The authors further examine the strategy and operational requirements for e‐fulfillment. This article is concluded with the implication of a successful e‐fulfillment system, a suggested design of an e‐fulfillment center, and the future research focuses.

关键词： Information systems Operating systems Strategic management Warehouses Electronic commerce

来源：评论

学校读者我要写书评

暂无评论

Resolving Structural Transfer Ambiguity in Chinese-to-Korean Machine Translation

引用

International Journal of computer Processing of Languages 2003年第2期16卷 119-142页

作者： DONG-IL KIM CUI ZHENG JINJI LI JONG-HYEOK LEE Department of Computer Science and Engineering Pohang University of Science and Technology San31 Hyoja-dong Nam-gu Pohang 790–784 Korea Also an assistant professor at Yanbian University of Science and Technology Yanji Jilin China. Also a lecturer at Yanbian University of Science and Technology Yanji Jilin China.

We propose a new prototype Chinese-to-Korean machine translation system called TOTAL-CK, a prototype transfer based MT system designed for the large-scale practical domain. TOTAL-CK consists of the components of analysis, transfer, and generation. In this paper, we mainly discuss the transfer issues resulting from stylistic structural differences between Chinese and Korean. The dependency grammar formalism is employed for Chinese parsed trees and their equivalent Korean parsed trees. We deal with structural transfer ambiguities that arise when a given source language syntactic pattern is potentially translated by a number of different target language syntactic patterns. Also, structural transfer ambiguities are the major complex transfer problem appearing during dependency transferring, in an SVO pattern that most frequently occurs in Chinese sentences. There are three types of structural transfer ambiguity: transitive transfer, subject-governing transfer and verb-governing transfer. They are discovered by analyzing the ambiguity and the related formalism. Finally, we present a thesaurus-based disambiguation approach for dependency structural transfer, which is adopted in TOTAL-CK. Our approach achieves 94.6% in precision for SVO sentences and 93.5% for overall sentences.

关键词： Machine Translation Structural Transfer Ambiguity Transitive Transfer Subject-governing Transfer Verb-governing Transfer

来源：评论

学校读者我要写书评

暂无评论

A wavelet based image denoising using statistical sampler for Bayesian estimator

A wavelet based image denoising using statistical sampler fo...

引用

IEEE Region 10 International Conference TENCON

作者： B.A. Kumar M. Srinivasan S. Annadurai Professor Computer Science &Engineering Department Government College of Technology Coimbatore Tamil Nadu India Lecturer Electronics & Communication Engineering Government College of Technology Coimbatore Tamil Nadu India

This paper presents a new wavelet based image denoising method, which includes a Bayesian framework and classical thresholding methods. The main goal here is computing for each wavelet coefficient the probability of being sufficiently clean. The three main novelties of our approach are: (1) estimating local regularity of an image and distinguishing between useful edges and noise; (2) initializing the mask by thresholding the average cone ratio (ACR); and (3) probabilistic shrinkage of wavelet coefficients, using a statistical sampler. The main advantage of this algorithm is improved denoising performance over earlier techniques, which is demonstrated in the results.

关键词： Image denoising Bayesian methods Wavelet coefficients Wavelet transforms Noise reduction Educational institutions Image edge detection Pixel Computational complexity Image reconstruction

来源：评论

学校读者我要写书评

暂无评论

The design and evaluation of a pipelined image compositing device for massively parallel volume rendering 03

The design and evaluation of a pipelined image compositing d...

引用

2003 Eurographics/IEEE TVCG Workshop on Volume graphics, VG '03

作者： Ogata, Masato Muraki, Shigeru Liu, Xuezhen Ma, Kwan-Liu Research and Development Department Mitsubishi Precision Co. Ltd. Kamakura Kanagawa Japan Collaborative Research Team of Volume Graphics National Institute of Advanced Industrial Science and Technology Tokyo Japan Department of Computer Science University of California Davis CA United States 345 Kamimachiya Kamakura Kanagawa 247-8505 Japan 2-41-6 Aomi Koto-ku Tokyo 135-0064 Japan One Shields Avenue Davis CA 95616-8562 United States

ISBN: (纸本)1581137451

An experimental study of software image compositing that we have carried out on a 512-node PC cluster shows the necessity of hardware compositing support to make possible real-time volume visualization scalable with large PC clusters. This paper describes the design and performance evaluation of such a hardware image compositing device. A PC cluster using such devices along with commodity graphics cards can enable simultaneous simulation and volume visualization. © The Eurographics Association 2003.

关键词： Volume rendering

来源：评论

学校读者我要写书评

暂无评论

Strategic planning for knowledge management implementation in engineering firms

引用

Work Study 2003年第4期52卷 190-200页

作者： Ravi Shankar Singh Amol Gupta Rakesh Narain Ravi Shankar is an Assistant Professor in the Department of Management Studies IIT Delhi New Delhi India. M.D. Singh is a Senior Lecturer in the Department of Mechanical Engineering Motilal Nehru National Institute of Technology Allahabad India. Amol Gupta is a Student in the Department of Computer Science TIT&S Bhiwani Haryana India. Rakesh Narain is a Senior Lecturer in the Department of Mechanical Engineering Motilal Nehru National Institute of Technology Allahabad India.

Knowledge management (KM) is the process of leveraging organizational knowledge to deliver long‐term advantage to a business and is based on a business strategy that involves engineering various knowledge‐centric business processes and developing organization structures to support these. These, in turn, require technology to capture, codify, store, disseminate and reuse the knowledge. Successful deployment of KM is not a simple process. This paper suggests that a major reason for the failure of many KM projects is the absence of a well‐defined strategic plan to guide implementation. This paper discusses the strategic planning needs of the KM deployment process, and develops a framework that could be used specifically by engineering firms to guide the KM implementation process.

关键词： Knowledge management Engineering Business strategy Strategic planning

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：