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检索条件"任意字段=2012 IEEE International Conference on Computer Science and Automation Engineering（CSAE 2012）"

共 3194 条记录，以下是721-730 订阅

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Image adaptive recovery based on compressive sensing and genetic algorithm

Image adaptive recovery based on compressive sensing and gen...

引用

ieee international conference on computer science and automation engineering (csae)

作者： Zhang Lin Jiangxi Science and Technique Normal University Nanchang China

Aiming at the characters of compressive sensing and genetic algorithm (GA), an adaptive image recovery method is proposed in this paper. Compressive sensing can capture and represent compressible signal at a rate below the Nyquist rate, and it is possible to reconstruct signals accurately and sometimes even exactly from far fewer data than what is usually considered necessary via using an optimization process which is broadly applied in compressive imaging. GA is global numerical-optimization method which works well in the problem of optimization. Therefore, the new method proposed in this paper combines advantages of compressive sensing and GA which can adaptively look for optimal solution to ensure the best recovery performance. The experiments show that the new method not only has better recovery quality and higher PSNRs, but also can effectively avoid the premature convergence problem and achieve optimization steadily.

关键词： Genetic algorithms Matching pursuit algorithms Compressed sensing Optimization Sparse matrices Transforms PSNR

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A hierarchical clustering algorithm based on energy and distance balancing for WSN

A hierarchical clustering algorithm based on energy and dist...

引用

2012 5th international conference on Intelligent Computation Technology and automation, ICICTA 2012

作者： Yan, Xin-Fang Gu, Xiao-Hui Li, Liang Song, Jia-You School of Information Engineering Huang He Science and Technology College Zhengzhou China School of Information Engineering Zhengzhou University Zhengzhou China Henan Machinery Design and Research Institute Zhengzhou China

ISBN: (纸本)9780769546377

For wireless sensor network (WSN), in order to solve the problem which the ETBG have too many cluster heads and these cluster heads distribute too concentrated, a hierarchical clustering algorithm based on energy and distance balancing is proposed. The algorithm chose the cluster heads in the same gradient grade. It is proved by theoretical analysis and computer simulation that this method can make the number of cluster heads more reasonable and prolong the network lifecycle. © 2012 ieee.

关键词： Wireless sensor networks

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Resource-distortion modeling for video streaming over mesh networks with priority-based packet scheduling

Resource-distortion modeling for video streaming over mesh n...

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2012 13th ieee international conference on Multimedia and Expo, ICME 2012

作者： Zhang, Yongfei Zhang, Yunsheng Qin, Shiyin He, Zhihai Beijing Key Lab. of Digital Media School of Computer Science and Engineering Beihang University Beijing 100191 China State Key Laboratory of Virtual Reality Technology and Systems Beihang University Beijing 100191 China School of Automation Science and Electrical Engineering Beihang University Beijing 100191 China Graduate School at Shenzhen Tsinghua University Shenzhen 518055 China Department of Electrical and Computer Engineering University of Missouri Columbia MO 65211 United States

ISBN: (纸本)9781467316590

Video streaming over mesh networks operates under stringent network resource constraints, with a large number of video sessions competing for limited network resources. In this work, we aim to establish so-called resource-distortion models to characterize the inherent relationship between the allocated network resources to each video session and its end-to-end video distortion or presentation quality at the receiver end. We observed that priority-based packet scheduling has significant impact on such resource-distortion relationship. Using ANN-based learning methods, we develop an end-to-end packet delay bound violation (PDBV) probability model for video streaming over multi-hop networks with priority-based packet scheduling. We then derive a quadratic video transmission distortion model to capture the unique behavior of priority-based packet scheduling and its impact on the end-to-end video distortion. Based on these resource-distortion models, we are able to predict the end-to-end distortion for video streaming over multi-hop networks with priority-based packet scheduling. Our extensive experimental results demonstrate that the proposed method is very accurate. © 2012 ieee.

关键词： Video streaming

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The management system with emotional virtual human based on smart home

The management system with emotional virtual human based on ...

引用

2012 9th international conference on Fuzzy Systems and Knowledge Discovery, FSKD 2012

作者： Du, Kunkun Wang, Zhiliang School of Automation and Electrical Engineering University of Science and Technology Beijing Beijing China School of Computer and Communication Engineering University of Science and Technology Beijing Beijing China

ISBN: (纸本)9781467300223

Affective virtual human is considered to one of the hotspots in the field of virtual human-computer interaction. First, the software platform of the management system has been designed, and the virtual human emotional model has been analyzed. Then, management functions have been carried out or simulated by many technologies. For example, face recognition, speech emotion interactions, text emotion recognition, eye tracking and other technologies. And the management system with emotional virtual human applied on smart home can construct a harmonious living environment, and improve user satisfaction and comfort. Finally, the improvements of the management system are described, to enable better application of human-computer interaction in the harmonious environment. © 2012 ieee.

关键词： Human computer interaction

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The application of computer-assisted instruction to basketball technique and tactics teaching

The application of computer-assisted instruction to basketba...

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2nd international conference on Intelligent Systems Design and engineering Applications, ISDEA 2012

作者： Tang, Shuo School of PE Hunan University of Technology Zhuzhou 412008 China

ISBN: (纸本)9780769546087

Aiming at the existing problem and the characteristics of teaching basketball technique and tactics, this paper presents a reasonable method of applying computer-Assisted Instruction to the process of teaching basketball. Through teaching experiments, it has been found that this method can accelerate the students' comprehension of basketball technique and tactics, boost their interest in learning them and improve the teaching effect. © 2012 ieee.

关键词： computer aided instruction

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The vsaUT-II: A novel rotational variable stiffness actuator

The vsaUT-II: A novel rotational variable stiffness actuator

引用

2012 ieee international conference on Robotics and automation, ICRA 2012

作者： Groothuis, S.S. Rusticelli, G. Zucchelli, A. Stramigioli, S. Carloni, R. Faculty of Electrical Engineering Mathematics and Computer Science University of Twente Netherlands Faculty of Mechanical Engineering University of Bologna Italy

ISBN: (纸本)9781467314039

In this paper, the vsaUT-II, a novel rotational variable stiffness actuator, is presented. As the other designs in this class of actuation systems, the vsaUT-II is characterized by the property that the output stiffness can be changed independently of the output position. It consists of two internal elastic elements and two internal actuated degrees of freedom. The mechanical design of the vsaUT-II is such that the apparent output stiffness can be varied by changing the transmission ratio between the elastic elements and the output. This kinematic structure guarantees that the output stiffness can be changed without changing the potential energy stored internally in the elastic elements. This property is validated in simulations with the port-based model of the system and in experiments, through a proper control law design, on the prototype. © 2012 ieee.

关键词： Stiffness

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A new two-step face hallucination through block of coefficients

A new two-step face hallucination through block of coefficie...

引用

ieee international conference on computer science and automation engineering (csae)

作者： H. M. M. Naleer Yao Lu H. M. M Naleer Laboratory of Intelligent Information Technology School of Computer Science Beijing Institute of Technology Beijing China Faculty of Applied Sciences South Eastern University of SriLanka Oluvil SriLanka

We introduce a two-step face hallucination frame work as one of classifying among sparse residual compensation model. In the first step, the optimal coefficients of the interpolated training images are used to construct a global face image. In the second step, a class of priors is computed based on mixing a set of linear priors related to dissimilar priors. The blocks of coefficients are considered to find the sparse mixing weights. In order to find the best improved information of the face image in the residual compensation of step-two, a sparse signal representation is considered over coefficients in a frame. Finally, we obtain a hallucinated face image by integrating these two steps. The extensive experiments on publicly available database show the effectiveness of the framework.

关键词： Face Training Dictionaries Image resolution Equations Mathematical model Vectors

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A compressible threshold multi-secret images sharing scheme based on two-variable one-way functions and matrix multiplication

A compressible threshold multi-secret images sharing scheme ...

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ieee international conference on computer science and automation engineering (csae)

作者： Xuanping Zhang Xiaoxia Wang Liping Shao School of Electronic and Information Engineering Xi'an Jiaotong University Xi'an China School of Computer Science Shaanxi Normal University Xi'an China

A matrix-multiplication based multi-secret images sharing scheme is proposed by combining shamir's secret sharing scheme and two-variable one-way functions. The scheme uses the selected seed to generate random matrix, and then uses the matrix to share secret images based on matrix multiplication. In this scheme, the seed is shared among participants by using shamir's secret sharing scheme, which can reduces public information compared with other scheme which is based on matrix multiplication. Two-variable one-way functions are applied to ensure the security and realize multiuse of the scheme. The participants can share multi-secret images by their pseudo-secret rather than their secret share. Experiment shows that the proposed scheme is security and has a good compression rate for image encryption.

关键词： Cryptography Image coding Algorithm design and analysis Image reconstruction Matrix converters Educational institutions

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Automatic Extraction of Command Hierarchies for Adaptive Brain-Robot Interfacing

Automatic Extraction of Command Hierarchies for Adaptive Bra...

引用

ieee international conference on Robotics and automation (ICRA)

作者： Bryan, Matthew Nicoll, Griffin Thomas, Vibinash Chung, Mike Smith, Joshua R. Rao, Rajesh P. N. Univ Washington Neural Syst Lab Seattle WA 98195 USA

ISBN: (纸本)9781467314053

Recent advances in neuroscience and robotics have allowed initial demonstrations of brain-computer interfaces (BCIs) for controlling wheeled and humanoid robots. However, further advances have proved challenging due to the low throughput of the interfaces and the high degrees-of-freedom (DOF) of the robots. In this paper, we build on our previous work on Hierarchical BCIs (HBCIs) which seek to mitigate this problem. We extend HBCIs to allow training of arbitrarily complex tasks, with training no longer restricted to a particular robot state space (such as Cartesian space for a navigation task). We present two algorithms for learning command hierarchies by automatically extracting patterns from a user's command history. The first algorithm builds an arbitrary-level hierarchical structure (a "control grammar") whose elements can represent skills, whole tasks, collections of tasks, etc. The user "executes" single symbols from this grammar, which produce sequences of lower-level commands. The second algorithm, which is probabilistic, also learns sequences which can be executed as high-level commands, but does not build an explicit hierarchical structure. Both algorithms provide a de facto form of dictionary compression, which enhances the effective throughput of the BCI. We present results from two human subjects who successfully used the hierarchical BCI to control a simulated PR2 robot using brain signals recorded non-invasively through electroencephalography (EEG).

关键词： Brain computer interface

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Formalization of a Realtime Person-computer Ensemble System with an Effective Matching Algorithm

Formalization of a Realtime Person-Computer Ensemble System ...

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2012 ieee international conference on computer science and automation engineering（csae 2012）

作者： Tetsuya Mizutani Shigeru Igarashi Faculty of Engineering Information and SystemsUniversity of Tsukuba Professor Emeritus University of Tsukuba

A person-computer ensemble system is one of time concerned cooperative systems,which performs secondo（the second part）in an ensemble played by a computer-controlled piano cooperating with primo（the leading part）played by a person *** is a good example of intelligent realtime programs appropriate for formal verification and analysis. NΣ-labeled calculus is a formal system in order to describe such systems including time-concerned recognition,knowledge, belief and decision of persons or computer programs together with related external physical or logical phenomena. In the realtime performance of music,to determine which key is played just now by the person performer,the matching algorithm between the score and the realtime input from the person performer is *** there are some mistouching, *** an incorrect key,or other mistake,error,etc.,and if the program does not detect and correct such errors,it does not determine which note is performed just now and which note of the secondo will be done just after now,and hence,it cannot control the performance ***,the matching method including correction of these mistouches is essential.A simple but very efficient matching method with error detecting has been already developed and presented by the authors. In this paper,the formal representation of the program and its formal specification satisfied by the program written and verified in the calculus are introduced.

关键词： Artificial Intelligence Formal Method Musical Informatics Ensemble System Correction of the Mistouching keys

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