检索结果-内蒙古大学图书馆

IEEE International Symposium on Circuits and systems (ISCAS)

作者： R. Chandramouli Multimedia Systems Networking and Communications (MSyNC) Laboratory Department of Electrical and Computer Engineering Stevens Institute of Technology USA

This work presents some important issues in searching the Internet for covert messages. Several related theoretical and practical problems are discussed. Web search is formulated as a mathematical optimization problem and solutions are proposed. Two algorithms: coordinated search and random search are discussed within this optimization framework along with their pros and cons.

关键词： Web search TCPIP Internet Digital images Steganography Information security Protocols Network servers Delay Search engines

来源：评论

学校读者我要写书评

暂无评论

Novel multifusion optical imaging sensing principles

Novel multifusion optical imaging sensing principles

引用

IEEE Instrumentation and Measurement Technology Conference

作者： G.C. Giakos Imaging Systems Sensors and Photonics Laboratory Department of Electrical and Computer Engineering University of Akron Akron OH USA

The goal of this study is to present novel, multifusion, optical imaging sensing principles, based on laser polarimetric imaging of targets surrounded by scattered media, using the Mueller matrices based formalism. Specifically, the novelty of the imaging system consists in the fusion of dual-energy imaging principles, with polarimetric imaging principles at varying focal lengths and exposures. The experimental results indicate clearly that, high specificity images can be obtained by transmitted and scattered photons from several media, by means of the proposed technique.

关键词： Optical imaging Optical scattering Light scattering Optical polarization Particle scattering Biomedical optical imaging Biomedical imaging Optical sensors Aerospace industry Optical refraction

来源：评论

学校读者我要写书评

暂无评论

Fusion of Visual and Thermal Signatures with Eyeglass Removal for Robust Face Recognition

Fusion of Visual and Thermal Signatures with Eyeglass Remova...

引用

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

作者： Jingu Heo S.G. Kong B.R. Abidi M.A. Abidi Imaging Robotics and Intelligent Systems Laboratory Department of Electrical and Computer Engineering University of Tennessee Knoxville TN USA

This paper describes a fusion of visual and thermal infrared (IR) images for robust face recognition. Two types of fusion methods are discussed: data fusion and decision fusion. Data fusion produces an illumination-invariant face image by adaptively integrating registered visual and thermal face images. Decision fusion combines matching scores of individual face recognition modules. In the data fusion process, eyeglasses, which block thermal energy, are detected from thermal images and replaced with an eye template. Three fusion-based face recognition techniques are implemented and tested: Data fusion of visual and thermal images (Df), Decision fusion with highest matching score (Fh), and Decision fusion with average matching score (Fa). A commercial face recognition software FaceIt® is used as an individual recognition module. Comparison results show that fusion-based face recognition techniques outperformed individual visual and thermal face recognizers under illumination variations and facial expressions.

关键词： Robustness Face recognition Face detection Lighting Optical imaging Intelligent robots Infrared imaging Pattern recognition computer vision Temperature

来源：评论

学校读者我要写书评

暂无评论

Space mapping: a novel and modeling methodology

Space mapping: a novel and modeling methodology

引用

International Conference on Microwave and Millimeter Wave Technology Proceedings

作者： J.W. Bandler Q.S. Cheng Simulation Optimization Systems Research Laboratory and Department of Electrical and Computer Engineering McMaster University Hamilton ONT Canada

The authors review the space mapping (SM) and the SM-based surrogate (modeling) concepts and their applications in engineering modeling and design optimization. The aim of SM is to achieve a satisfactory solution with a minimal number of computationally expensive "fine" model evaluations. SM procedures iteratively update and optimize surrogates based on a fast physically-based "coarse" model. Also review the original, aggressive and implicit SM (ISM) techniques. A "cheese-cutting" problem illustrates the ISM concept. Significant recent practical applications are reviewed.

关键词： Design methodology Samarium Space technology Computational modeling Design optimization Circuit simulation Design automation Design engineering Electromagnetic modeling Ink

来源：评论

学校读者我要写书评

暂无评论

Distributed power control of cellular networks in the presence of Rayleigh fading channel

Distributed power control of cellular networks in the presen...

引用

IEEE Annual Joint Conference: INFOCOM, IEEE computer and Communications Societies

作者： S. Jagannathan M. Zawodniok Q. Shang Embedded Systems and Networking Laboratory Department of Electrical and Computer Engineering University of Missouri Rolla Rolla MO USA

A novel distributed power control (DPC) scheme for cellular networks in the presence of radio channel uncertainties such as path loss, shadowing, and Rayleigh fading is presented. Since these uncertainties can attenuate the received signal strength and can cause variations in the received signal-to-interference ratio (SIR), the proposed DPC scheme maintains a target SIR at the receiver provided the uncertainty is slowly varying with time. The DPC estimates the time varying nature of the channel quickly and uses the information to arrive at a suitable transmitter power value. Further, the standard assumption of a constant interference during a link's power update used in other works in the literature is relaxed. A CDMA-based cellular network environment is used to compare the proposed scheme with earlier approaches. The results show that our DPC scheme can converge faster than others by adapting to the channel variations. The proposed DPC scheme can render outage probability of 5 to 30% in the presence of uncertainties compared with other schemes of 50 to 90% while consuming low power per active mobile user. In other words, the proposed DPC scheme allows significant increase in network capacity while consuming low power values even when the channel is uncertain.

关键词： Power control Land mobile radio cellular systems Intelligent networks Fading Receivers Uncertainty Rayleigh channels Radio transmitters Embedded system Shadow mapping

来源：评论

学校读者我要写书评

暂无评论

Fusion of visual, thermal, and range as a solution to illumination and pose restrictions in face recognition

Fusion of visual, thermal, and range as a solution to illumi...

引用

International Carnahan Conference on Security Technology

作者： B. Abidi S. Huq M. Abidi Imaging Robotics and Intelligent Systems Laboratory Department of Electrical and Computer Engineering University of Tennessee Knoxville TN USA

This paper summarizes the various components of face recognition research conducted at the IRIS Lab. First, fusion of visual and thermal infrared (IR) images for robust face recognition is discussed. Two techniques are implemented: data fusion and decision fusion. With the knowledge that eyeglasses block the emission of thermal energy, an algorithm is designed to detect and replace eyeglasses with an eye template in thermal images. A commercial face recognition software (FaceIt/spl reg/) is used in the evaluation of the various fusion algorithms. Comparison results show that fusion-based face recognition outperforms individual visual or thermal face recognizers under illumination variations and facial expressions. Efforts in the 3D arena are also described. Results of high resolution stereo-based 3D reconstruction of faces are shown and analyzed, in a first approach, then in a second approach, a warping technique is applied to overlay color and thermal textures on 3D mannequin head models, obtained using a laser range scanner.

关键词： Lighting Face recognition Face detection Iris Infrared imaging Robustness Algorithm design and analysis Software algorithms Image reconstruction Image color analysis

来源：评论

学校读者我要写书评

暂无评论

Facial expression classification based on MPEG-4 FAPs: the use of evidence and prior knowledge for uncertainty removal

Facial expression classification based on MPEG-4 FAPs: the u...

引用

IEEE International Conference on Fuzzy systems (FUZZ-IEEE)

作者： M. Wallace A. Raouzaiou N. Tsapatsoulis S. Kollias Image Video and Multimedia Systems Laboratory (IVML) Department of Computer Science School of Electrical and Computer Engineering National and Technical University of Athens Zografou Greece

As low resolution shots, rotations of the head with respect to the camera, face deformation due to speech and so on inflict a great deal of uncertainty in FAP measurements, uncertainty is also inherent in the process of expression analysis. We tackle such uncertainty via the observation that user emotions do not typically alter rapidly very often. Thus, possibilistic evidence may be gathered from each frame about the user expression; evidence from the current and recent frames can be combined using evidence theory.

关键词： MPEG 4 Standard Financial advantage program Uncertainty Head Cameras Videoconference Online Communities/Technical Collaboration Vocabulary Mouth Atomic measurements

来源：评论

学校读者我要写书评

暂无评论

FPGA emulation of quantum circuits

FPGA emulation of quantum circuits

引用

IEEE International Conference on computer Design: VLSI in computers and Processors, (ICCD)

作者： A.U. Khalid Z. Zilic K. Radecka Microelectronics and Computer Systems Laboratory McGiN University RRP Montreal QUE Canada Department of Electrical and Computer Engineering Concordia University Montreal QUE Canada

Quantum computing offers immense speedup in performing tasks such as data encryption and searching. The quantum algorithms can be modeled using classical computing devices, however classical computer simulations cannot deal efficiently with the parallelism present in quantum algorithms. The quantum circuit model for quantum algorithms is sufficient to describe the known quantum algorithms. Using analogies between quantum and digital circuits, we design the emulator of quantum algorithms in FPGAs that allows efficient experimentation with new quantum algorithms. This paper concentrates on new techniques for modeling quantum circuits, including the entanglement and probabilistic computing realization, as well as the critical issues in the required precision of computing.

关键词： Field programmable gate arrays Emulation Quantum computing Cryptography Concurrent computing computer simulation parallel processing Digital circuits Algorithm design and analysis Quantum entanglement

来源：评论

学校读者我要写书评

暂无评论

Error probabilities of CDMA systems with beamforming under different power control schemes

Error probabilities of CDMA systems with beamforming under d...

引用

IEEE Conference on Vehicular Technology (VTC)

作者： Jin Yu Yu-Dong Yao Department of Electrical and Computer Engineering Wireless Information Systems Engineering Laboratory (WISELAB) Stevens Institute of Technology Hoboken NJ USA

ISBN: (纸本)0780385217

The reverse link error probability of multicell direct-sequence code-division multiple-access (DS-CDMA) systems with beamforming and Rake receivers is evaluated in this paper. The impact of power control schemes on the error probability is examined, considering power-based power control (PW-PC) and signal-to-interference ratio (SIR) based power control (SIR-PC). Expressions for the error probability as a function of the number of users per cell, the number of antenna elements, the number of Rake receiver fingers, and the CDMA processing gain are derived and both multipath interference and interference due to other users (own and other cells) are taken into consideration in the evaluation. Numeric results indicate that CDMA systems with different power control schemes have the same reverse link user capacity for a given target bit-error rate. However, the SIR-PC approach consumes less power than PW-PC when the number of users is smaller than the user capacity.

关键词： Error probability Multiaccess communication Array signal processing Power control Fading Multipath channels Interference Receiving antennas Fingers Bit error rate

来源：评论

学校读者我要写书评

暂无评论

Sequential and parallel Meta-Heuristics for Solving the Single Row Routing Problem

引用

Cluster Computing 2004年第2期7卷 123-139页

作者： Zomaya, Albert Y. Patterson, Daniel Olariu, Stephan School of Information Technologies The University of Sydney Sydney Australia Parallel Computing Research Laboratory Department of Electrical and Electronic Engineering The University of Western Australia Australia Department of Computer Science Old Dominion University Norfolk USA

The design of multi-layer printed circuit boards is vital in the construction of complex electronic systems. Wire routing is a crucial step in the overall design process, which can be decomposed into a number of single row routing (SRR) problems. This paper proposes an approach to solve the SRR problem based on parallel meta-heuristics. The development of this technique involves the design of an encoding strategy that allows all possible routings to be uniquely represented and the derivation of cost functions that maximizes the quality of the developed solutions. Further, parallelization of the proposed approach is attempted to improve the computational efficiency. The different stages of the development are backed by experiments to show the pros and cons of the sequential and parallel implementations.

关键词：

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：