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The 6th International Forum on Strategic technology(IFOST 2011)(第六届国际战略技术论坛)

作者： Hanqing Zhao Guoqiang Xu Collge of Measure-Control Technology and Communication Engineering Harbin University of Science and Collge of Automation Harbin University of Science and TechnologyHarbinChina

ISBN: (纸本)9781457703980;9781457703966

An important issue in the classification of electromyography signals is the classifier design. For surface electromyography signals in the acquisition process of serious interference by the noise, in particular frequency electrical interference, we use the zero mean of the electromyography signals and the whole cycle of filtering, obtain effective extraction of the electromyography signals characteristics, we compared the whole period of Electromyography signals filtering and f non-whole period filtering for hand acting, obtains the whole period of electromyography signals filtering to suppress interference is a very effective method. The way of electromyography signals feature extraction provides a simple, fast and practical method and lay the foundation for follow-up electromyography signals multi-action recognition.

关键词： Electromyography signals whole period filter zero mean

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Design of sensor model based on casein detection

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Guangxue Jingmi Gongcheng/Optics and Precision engineering 2011年第7 SUPPL.期19卷 382-389页

作者： Qin, Yong Zhou, Zhen Hou, Jing Wang, Li-Jie The Higher Educ. Key Lab. on Measuring and Control Technology and Instrum. of Heilongjiang Province College of Measure-Control Technology and Communication Engineering Harbin University of Science and Technology Harbin 150080 China

In order to perform a quantitative analysis of a casein element, we simulate the scattering characteristics of casein, analyze the effect of the shape of a sample cell and the light source wavelength in the detection equipment on the casein detection and establish a sensor model for casein detection. All of these aspects are based on researching the scattering characteristics of a casein micelle. Using Mie scattering, we establish the scattering models of casein, including a cylinder cross-section and a square sample cell. Through irradiating different sample cells, we have analyzed the light intensity at all angles, and the light sensitivity for different wavelengths. The simulation result indicates that a square sample cell at 0° and 90° is more amenable to the detection the light intensity, which technically can meet correlative requirements. According to the simulation results, we demonstrate the detection sample cell of the casein element by using wavelengths of 1333 nm and 1600 nm as the laser source.

关键词： Light scattering

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Grading test platform for Stereo Matching Algorithms

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4th International Symposium on Computational Intelligence and Industrial Applications, ISCIIA 2010

作者： Yu, Shuchun Yan, Dan Wang, Ying Yu, Xiaoyang School of Measure-Control Technology and Communication Engineering Harbin University of Science and Technology Harbin 150040 China

ISBN: (纸本)9787121113154

A variety of studies on Stereo Matching Algorithms present that the process of Stereo Matching Algorithms can be reduced to five stages. The core three stages of Stereo Matching Algorithms are the attainment of initial match cost, the generation of candidate match cost and parallax calculation. Based on this theoretical, the grading test platform for stereo matching methods was present, on the context of using vc++6.0 to realize class encapsulation in each stage. There are four kinds of image to control data stream and unified interface between classes in this platform. Testing platform was divided into three parts - area of images-displaying, area of time-displaying and area of parameter-input In the images-displaying area, different parameters can be selected to control the execution of different algorithms. In the time-displaying area, the length of time of different algorithms can be compared, meanwhile, the bottleneck to improve the real time of algorithms can be detected. Performance-checking experiments of the test platform show it is excellent;its structure is clear;its function is perfect;its operation is simple;its expansibility is good.

关键词： Grading

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Design of automatic positioning system based on multi-sensor for big crane-form pipeline

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4th International Symposium on Computational Intelligence and Industrial Applications, ISCIIA 2010

作者： Yu, Hong Yang, Junqing School of Measure-Control Technology and Communication Engineering Harbin Univ. of Sci. and Tech. Harbin 150040 China School of Environment and Chemical Engineering Nanchang University China

ISBN: (纸本)9787121113154

Automatic positioning system for big crane-form pipeline is mainly to achieve the precise positioning of circular opening and big crane-form pipeline, and it's also the auxiliary system of achieving automatic loading. In order to speed up the positioning and improve its precision, the system is designed to use a combined method of infrared and machine vision;infra-red is used to quickly positioning, while template matching and circle center detection are used to precise positioning. The system transmits the data of position of circular opening to PLC through serial port. And then, the big crane-form pipeline is controlled to backward, forward, lower and transport oil by PLC. The positioning of the system is precise and express.

关键词： Edge detection

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Block-based adaptive image watermarking scheme using just noticeable difference

Block-based adaptive image watermarking scheme using just no...

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2009 IEEE International Workshop on Imaging Systems and Techniques, IST 2009

作者： Yixin, Yan Wei, Cao Shengming, Li College of Measure-Control Technology and Communication Engineering Harbin University of Science and Technology Harbin 150040 China

ISBN: (纸本)9781424434831

Digital watermarking has been proposed as a solution to the problem of copyright protection of multimedia files in networked environments. In this paper, a block-based adaptive image watermarking scheme using Just Noticeable Difference (JND) is proposed. The proposed scheme is performed in both pixel domain and Discrete Cosine Transform (DCT) domain. It first divides host image into 88 blocks. After that, it calculates the capacity of each block to embed information without being perceptible. This capacity can be determined by JND threshold, which is one feature of Human Visual System (HVS) model and it measures the smallest difference between watermarked and host image that is just detectable for human vision. The DCT coefficients of each block are adaptively modified according to the JND threshold values. Watermarks will be embedded in the modified DCT coefficients. Performance and experimental results of proposed scheme are presented. As expected, high robustness of watermarked images without image quality distortion can be achieved. © 2009 IEEE.

关键词： Discrete cosine transforms

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Unsupervised Color-Texture Image Segmentation Based on A New Clustering Method

Unsupervised Color-Texture Image Segmentation Based on A New...

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International Conference on New Trends in Information and Service Science, NISS

作者： Yixin Yan Yongbin Shen Shengming Li College of Measure-Control Technology & Communication Engineering Harbin University of Science and Technology Harbin China

Image segmentation is a classical problem in the area of image processing, motion estimation, and soon. Although there exist a lot of clustering based approaches to perform image segmentation, few of them study how to obtain more accurate image segmentation results by designing a suitable clustering method. In this paper, we select an appropriate distance measure in the composite feature space of color and texture. Then the distance measure is incorporated in a clustering method that utilizes the spatial information of each feature vector. Finally, the proposed scheme performs morphology filtering to obtain the final segmented regions. Experimental results show that proposed scheme can constantly achieve higher segmentation accuracy compared to some state-of-art image segmentation algorithms.

关键词： Image segmentation Clustering methods Clustering algorithms Algorithm design and analysis Pixel Extraterrestrial measurements Image processing Morphology Filtering Image analysis

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Robust Image Watermarking Based on singular value decomposition in DT-CWT domain

Robust Image Watermarking Based on singular value decomposit...

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IEEE International Workshop on Imaging Systems and Techniques (IST)

作者： Wei Cao Yixin Yan Shengming Li College of Measure-Control Technology & Communication Engineering Harbin University of Science and Technology Harbin China

This paper introduces a novel approach of watermarking for copyright protection applications using the singular value decomposition (SVD) in the dual tree complex wavelet transform (DT-CWT) domain. After applying the 2-level DT-CWT to the cover grayscale image, we apply the SVD to each high-pass subband obtained. The singular values in each subband are then modified by the singular values of the DT-CWT-transformed visual watermark. Modification in all subbands allows the development of a watermarking scheme that is robust to a wide range of attacks. Experimental results demonstrate that the proposed watermarking scheme is highly robust to various attacks.

关键词： Robustness Watermarking Singular value decomposition Discrete wavelet transforms Wavelet domain Discrete Fourier transforms Wavelet transforms Fourier transforms Discrete cosine transforms Protection

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A Novel Method for Video Retrieval Using Relevant Feedback

A Novel Method for Video Retrieval Using Relevant Feedback

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International Conference on New Trends in Information and Service Science, NISS

作者： Yongbin Shen Yixin Yan Shengming Li College of Measure-Control Technology & Communication Engineering Harbin University of Science and Technology Harbin China

In this paper, we propose a relevant feedback algorithm based on supervised classification and unsupervised feature extraction using independent component analysis (ICA). First, we calculate the approximate coefficients of video frames in a single shot by two-level Haar wavelet decomposition; second,ICA is utilized to obtain the independent components of the wavelet coefficients, which are used to represent video frames. Simulation results demonstrated the validity of the algorithm.

关键词： Feedback Information retrieval Video on demand Independent component analysis Data mining Feature extraction Content based retrieval Image retrieval Humans Videoconference

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A Novel Rational measurement Method for Electric Energy of Distorted Signals

A Novel Rational Measurement Method for Electric Energy of D...

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International Conference on New Trends in Information and Service Science, NISS

作者： Xiaobing Zhang Yixin Yan Wei Cao Haibin Wu College of Measure-Control Technology & Communication Engineering Harbin University of Science and Technology Harbin China

Accurate measurement of the power consumed by the distorted signals has been focused on in recent years due to its practical utilities. In this work, a mathematical description of powers is deducted in the condition of distorted signals according to a simplified model of the electrical network. Then, a rational measuring method of the electric energy for distorted signals is proposed on the basis of the analysis of the power flow. Also, the wavelet sub-band measuring method was employed for measuring the electric energy in the condition of unsteady distorted signals. Experimental results demonstrate that, by using the simulated typical distorted signals, the proposed measurement method can produce extremely accurate results compared to theoretical results.

关键词： Distortion measurement Energy measurement Electric variables measurement Power system harmonics Load flow Power measurement Mathematical model Harmonic distortion Signal analysis Current measurement

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Bit Replacement Audio Watermarking Using Stereo Signals

Bit Replacement Audio Watermarking Using Stereo Signals

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International Conference on New Trends in Information and Service Science, NISS

作者： Wei Cao Yixin Yan Shengming Li College of Measure-Control Technology & Communication Engineering Harbin University of Science and Technology Harbin China

In this paper, a blind audio watermarking scheme using stereo signals is proposed. In the proposed scheme, each bit of watermark bit stream is embedded into ldquonon-silentrdquo samples of stereo audio signals. The watermark bits can be embedded by replacing least significant bit or bits in higher bit layers of original signal samples. Robustness and performance of this audio watermarking scheme under different types of attacks, such as addition of noise, MP3 compression and re-sampling are investigated. Watermark extraction rates are calculated. Different audio signals including music, speech are used for the experiments. It is found that the proposed audio watermarking scheme, compared with the use of single channel signals, is much more robust against addition of white noise.

关键词： Watermarking Noise robustness Digital audio players Noise level Signal processing Educational institutions communications technology Streaming media Multiple signal classification Speech

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