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检索条件"机构=Dept. Automation and System Engineering"

共 166 条记录，以下是81-90 订阅

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Dynamic Gesture Recognition using 3D Trajectory

Dynamic Gesture Recognition using 3D Trajectory

引用

2014 4th IEEE International Conference on Information Science and Technology

作者： Qianqian Wang Yuan-Rong Xu Xiao Bai Dan Xu Yen-Lun Chen Xinyu Wu Guangdong Provincial Key Laboratory of Robotics and Intelligent System Shenzhen Institutes of Advanced Technology Chinese Academy of Sciences University of Science and Technology of China Dept. Mechanical and Automation Engineering The Chinese University of Hong Kong

In this paper, we proposed an effective method which can recognize dynamic hand gesture by analyzing the information of motion trajectory captured by leap motion in three-dimension space. A simple gesture spotting is tried. And the orientation characteristics are quantified and coded as the feature after pre-processing the data. Then an improved discrete HMM algorithm is utilized to model and classify *** results on a self-built database of dynamic hand gestures(numbers 0-9) demonstrate the effectiveness of the proposed method.

关键词： Dynamic Gesture Recognition using 3D Trajectory

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A novel feature extracting method for dynamic gesture recognition based on support vector machine

A novel feature extracting method for dynamic gesture recogn...

引用

International Conference on Information and automation (ICIA)

作者： Yuanrong Xu Qianqian Wang Xiao Bai Yen-Lun Chen Xinyu Wu Shenzhen Key Lab for Computer Vision and Pattern Recognition Chinese Academy of Sciences University of Science and Technology of China Dept. Mechanical and Automation Engineering The Chinese University of Hong Kong Guangdong Provincial Key Laboratory of Robotics and Intelligent System Chinese Academy of Sciences

In this paper, we propose a method based on the SVM algorithm to recognize dynamic hand gestures. The information of motion trajectory is captured by a leap motion in three-dimension space. A new methodology of feature extracting is proposed to guarantee the length of samples being the same. The elements of feature vectors are ranged according to two different criteria: one is the amplitude of the variation of orientation angles, and the other criterion is the order of the appearance of features. Experimental results show that this method can classify the dynamic hand gestures effectively.

关键词： Vectors Trajectory Feature extraction Equations Mathematical model Hidden Markov models automation

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Dynamic hand gesture early recognition based on Hidden Semi-Markov Models

Dynamic hand gesture early recognition based on Hidden Semi-...

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IEEE International Conference on Robotics and Biomimetics

作者： Qianqian Wang Yuanrong Xu Yen-Lun Chen Yong Wang Xinyu Wu University of Science and Technology of China Shenzhen Key Lab for Computer Vision and Pattern Recognition Chinese Academy of Sciences Dept. Mechanical and Automation Engineering The Chinese University of Hong Kong. Guangdong Provincial Key Laboratory of Robotics and Intelligent System Chinese Academy of Sciences

ISBN: (纸本)9781479973989

Real-time performance can be greatly improved, if the early recognition is implemented. In this paper, a dynamic hand gesture early recognition system is proposed. The system can recognize the gesture before it is completed. Our method is based on the Hidden Semi-Markov Models. Three-dimensional information of the gesture trajectory collected by leapmotion is the main data we used. Experiments on the dataset which we established demonstrate the effectiveness of our method.

关键词： Hidden Markov models Gesture recognition Training Conferences Trajectory Arrays

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A Kalman filter based approach to probabilistic gas distribution mapping 13

A Kalman filter based approach to probabilistic gas distribu...

引用

28th Annual ACM Symposium on Applied Computing, SAC 2013

作者： Blanco, Jose Luis Monroy, Javier G. Gonzalez-Jimenez, Javier Lilienthal, Achim Dept. of Engineering University of Almería Almeria Spain Dept. of System Engineering and Automation University of Málaga Málaga Spain AASS Research Center Orebro University Orebro Sweden

ISBN: (纸本)9781450316569

Building a model of gas concentrations has important industrial and environmental applications, and mobile robots on their own or in cooperation with stationary sensors play an important role in this task. Since an exact analytical description of turbulent flow remains an intractable problem, we propose an approximate approach which not only estimates the concentrations but also their variances for each location. Our point of view is that of sequential Bayesian estimation given a lattice of 2D cells treated as hidden variables. We first discuss how a simple Kalman filter provides a solution to the estimation problem. To overcome the quadratic computational complexity with the mapped area exhibited by a straighforward application of Kalman filtering, we introduce a sparse implementation which runs in constant time. Experimental results for a real robot validate the proposed method. Copyright 2013 ACM.

关键词： Kalman filters

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Predicting Wikipedia Editor's Editing Interest Based on Factor Graph Model

Predicting Wikipedia Editor's Editing Interest Based on Fact...

引用

IEEE International Conference on Services Economics (SE)

作者： Haisu Zhang Sheng Zhang Zhaolin Wu Liwei Huang Yutao Ma The 1st Department Academy of National Defense Information Wuhan China 1st Dept. Acad. of Nat. Defense Inf. Wuhan China College of Command Information System PLA University of Science and Technology Nanjing China State Key Laboratory of Software Engineering Wuhan University Wuhan China WISET Automation Co. Ltd Wuhan Iron and Steel Group Corporation Wuhan China

Recruiting or recommending appropriate latent editors who can edit a specific entry (or called article) plays an important role in improving the quality of Wikipedia entries. To predict an editor's editing interest for Wikipedia entries, this paper proposes an Interest Prediction Factor Graph (IPFG) model, which is characterized by editor's social properties, hyperlinks between Wikipedia entries, categories of an entry and other important features. Furthermore, the paper suggests a parameter learning algorithm based on the gradient descent and Loopy Sum-Product algorithms for factor graphs. The experiment on a Wikipedia dataset shows that, the average prediction accuracy (F1-Measure) of the IPFG model could be up to 87.5%, which is about 35% higher than that of a collaborative filtering approach. Moreover, the paper analyses how incomplete social properties and editing bursts affect the prediction accuracy of the IPFG model. What we found would provide a useful insight into effective Wikipedia article tossing, and improve the quality of those entries that belong to specific categories by means of collective collaboration.

关键词： Encyclopedias Internet Electronic publishing Predictive models Prediction algorithms Accuracy

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Distribution planning with renewable energy units based on modified shuffled frog leaping algorithm

Distribution planning with renewable energy units based on m...

引用

2013 International Conference on Artificial Intelligence, ICAI 2013

作者： Shayanfar, H.A. Abedinia, O. Amjady, N. Center of Excellence for Power System Automation and Operation Elect. Eng. Dept. Iran University of Science and Technology Tehran Iran Electrical Engineering Department Semnan University Semnan Iran

ISBN: (纸本)1601322488

The Distributed Generation (DG) has created a challenge and an opportunity for developing various novel technologies in power generation. DG prepares a multitude of services to utilities and consumers, containing standby generation, peaks chopping sufficiency, base load generation. In this paper a planning paradigm for network upgrade based on Modified Shuffled Frog Leaping (MSFL) algorithm is proposed. SFLA is a decrease based stochastic search method that begins with an initial population of frogs whose characteristics, known such as memes, represent the decision variables. The algorithm uses memetic evolution in the form of influencing of ideas from one individual to another in a local search. The paradigm is able to select amongst several choices equi-cost that one assuring the optimum in terms of voltage profile, considering various scenarios of DG penetration and load demand. The proposed algorithm is applied over the 30 lines, 28 buses power system. The achieved results demonstrate the good efficiency of the DG using the proposed technique in different scenarios.

关键词： Algorithms

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Generation expansion planning base on modified shuffled frog leaping in restructured environment

Generation expansion planning base on modified shuffled frog...

引用

2013 International Conference on Artificial Intelligence, ICAI 2013

作者： Abedinia, O. Amjady, N. Shayanfar, H.A. Electrical Engineering Department Semnan University Semnan Iran Center of Excellence for Power System Automation and Operation Elect. Eng. Dept. Iran University of Science and Technology Tehran Iran

ISBN: (纸本)1601322488

In this paper a generation expansion planning in restructured power systems is presented based on Modified Shuffled Frog Leaping (MSFL) for decoupling generation expansion planning from transmission expansion planning. Also for reducing complexity of the problem the benders decomposition is applied in this paper which divide the main problem in to two sub-problems as;maximize profits of each GENCO (PBGEP) and the security problem wants to satisfy security network constraints (SCGEP). Accordingly, calculate value of each GENCO's profit and total profit are considered as an optimization problem by proposed MSFL. The effectiveness of the proposed technique is applied over modified IEEE 30-bus system. The presented results demonstrate the efficiency the proposed technique.

关键词： Expansion

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Calibration of MOX gas sensors in open sampling systems based on Gaussian Processes

Calibration of MOX gas sensors in open sampling systems base...

引用

11th IEEE SENSORS 2012 Conference

作者： Monroy, Javier G. Lilienthal, Achim Blanco, Jose Luis Gonzalez-Jimenez, Javier Trincavelli, Marco Dept. of System Engineering and Automation University of Malaga Spain AASS Research Centre Crebro University Sweden Dept. of Civil Engineering University of Malaga Spain

ISBN: (纸本)9781457717659

Calibration of metal oxide (MOX) gas sensors for continuous monitoring is a complex problem due to the highly dynamic characteristics of the gas sensor signal when exposed to a natural environment in an Open Sampling system (OSS). This work presents a probabilistic approach to the calibration of MOX gas sensors using Gaussian Processes (GP). The proposed approach estimates for every sensor measurement a probability distribution of the corresponding gas concentration, which enables the calculation of confidence intervals for the predicted concentrations. Being able to predict the uncertainty about the concentration related to a particular sensor response is particularly advantageous in OSS applications where typically many sources of uncertainty exist. The proposed approach has been tested with an experimental setup where an array of MOX sensors and a Photo Ionization Detector (PID) are placed downwind with respect to the gas source. The PID is used to obtain ground truth concentration measurements. Comparison with standard calibration methods demonstrate the advantage of the proposed approach. © 2012 IEEE.

关键词： Calibration

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Design of Integral Fuzzy Terminal Sliding-Mode Controller for Omni-directional Mobile Robots

Design of Integral Fuzzy Terminal Sliding-Mode Controller fo...

引用

International Conference on Robot, Vision and Signal Processing (RVSP)

作者： Chi-Hua Liu Shun-Hung Tsai Yu-An Chen Chin-Sheng Chen Chih-Chin Wen Ming-Ying Hsiao Dept. of Industrial Engineering and Administration Fortune Institute of Technology Kaohsiung Taiwan Graduate Institute of Automation Technology National Taipei University of Technology Taipei Taiwan National Taipei University of Technology Graduate Institute of Automation Technology Taipei City Taiwan R.O.C Energy and Agile System Department Metal Industries Research and Development Centre Kaohsiung Taiwan R.O.C Department of Electrical Engineering Fortune Institute of Technology Kaohsiung Taiwan

In this paper, an integral fuzzy terminal sliding mode control (IFTSMC) scheme is proposed for trajectory control of an omni-directional mobile robot (ODMR). This control scheme combines the techniques of terminal attractor approach, integral sliding-mode control and fuzzy logic control which can drive the posture error and velocity error to zero at finite time. All the simulation results demonstrate the effectiveness of the proposed control method.

关键词： Mobile robots Sliding mode control Dynamics Vectors Service robots Uncertainty

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Self healing character of smart grid in presence of DFIG under asymmetrical faults by considering stator resistance and slip frequency

Self healing character of smart grid in presence of DFIG und...

引用

17th Electrical Power Distribution Network Conference, EPDC 2012

作者： Zohoori, Alireza Zakariazadeh, Alireza Jadid, Shahram Center of Excellence for Power System Automation and Operation Dept. of Electrical Engineering Iran University of Science and Technology Tehran Iran

ISBN: (纸本)9781467314183

Nowadays doubly fed induction generators (DFIG) are the most popular generator used in wind turbine plants because of their cost effective partly rated power converter and variable speeds. On the other hand, wind energy is one of the most important renewable energy sources in smart grid this means that it will broadly implement on smart distribution network. The main issue of DFIG is their sensitivity to gird perturbation especially voltage dips since the stator is directly connected to the grid. Rapidly increasing contribution of wind energy in power generation made it important to understand the behavior of these machines under fault conditions where the self healing character of smart grid should be considered while any contingency occur in system. In this paper an analytical equation of stator current under asymmetrical voltage dips is attained. Also the impact of the location of this fault is considered. In addition the behavior of system in traditional distribution network and smart distribution grid is evaluated. It is shown that different time of the fault occurrence can largely effect on the transient amplitude of the stator current and self healing character of smart grid help the system to continue supplying demand without interruption in fault occurrence situation. © 2012 Iranian Association of Elect.

关键词： Smart power grids

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