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A generalized mean shift tracking algorithm

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Science China(Information Sciences) 2011年第11期54卷 2373-2385页

作者： CHEN JianJun 1,4,ZHANG SuoFei 1,AN GuoCheng 2 & WU ZhenYang 1,3. School of Information Science and Engineering,southeast university,nanjing 2.0096,China 2 Intelligence Engineering Lab,Institute of Software Chinese Academy of Sciences,Beijing 100190,China 3.key Laboratory of {3. acoustic signal processing of ministry of education,southeast university,nanjing 2.0096,China 4 nanjing Research Institute of Electronic Technology,nanjing 2100{13.China 1. School of Information Science and Engineering Southeast University Nanjing 210096 China4. Nanjing Research Institute of Electronic Technology Nanjing 210013 China2. Intelligence Engineering Lab Institute of Software Chinese Academy of Sciences Beijing 100190 China3. Key Laboratory of Underwater Acoustic Signal Processing of Ministry of Education Southeast University Nanjing 210096 China

CAMSHIFT algorithm and Comaniciu/Meer algorithm are two fundamental frameworks of mean shift procedure for video target *** paper generalizes the two well-known mean shift tracking algorithms,originally due to Bradski and Comaniciu/Meer.A new general similarity function which defines the distance between the target model and target candidate is employed to calculate the pixel weights and the target *** target size is iteratively estimated and updated based on the zeroth order moment of the pixel *** we prove that both the CAMSHIFT algorithm and the Comaniciu/Meer algorithm can be included in the generalized mean shift tracking *** tracking performances of three mean shift algorithms in the unified framework are shown and compared in the experimental results.

关键词： mean shift CAMSHIFT video target tracking similarity measure

Effects of Meat and Phosphate Level on Water-Holding Capacity and Texture of Emulsion-Type Sausage During Storage

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Agricultural Sciences in China 2009年第12期8卷 1475-1481页

作者： WANG Peng,XU Xing-lian and ZHOU Guang-hong key Laboratory of Meat processing and Quality Control,ministry of {3./{3. Agricultural university,{3. 210095,P.R.China [a] key Laboratory of Meat processing and Quality Control Ministry of Education/Nanjing Agricultural University Nanjing 210095 P.R. China

This paper was designed to verify the influence of phosphate on water-holding capacity （WHC） and texture of emulsiontype sausage prepared with pre-rigor meat, ageing meat or frozen meat. Pre-rigor pork, ageing pork and frozen pork were pre-blended with five levels of phosphate and made into emulsion-type sausage. The yield, hardness and total expressible fluid （TEF） were measured with texture profile analysis machine and pressiometer when emulsion-type sausage was produced. Meanwhile, hardness and purge loss （PL） were measured during 3. d storage. As emusion-type sausage made by pre-rigor meat, higher yield and relatively stable hardness could be found. It indicated that increasing of phosphate level caused an alleviatable effects in increasing of hardness when emulsion-type sausage made by pre-rigor meat, but opposite effects made by ageing meat or frozen meat. The distribution of PL of emulsion-type sausage was found to be affected by phosphate addition. Significant decrease of PL could not be obtained by increasing of phosphate level during storage. Pre-rigor meat improved WHC and texture of emulsion-type sausage. Problem of WHC and texture of emulsiontype sausage during storage could not be resolved by single use of phosphate at relatively higher level （3.） of NaCl.

关键词： meat emulsion-type sausage water-holding capacity texture

Preparation of Nanosized AlOOH and Its Application in Polymer-inorganic Nanocomposites

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Journal of Wuhan university of Technology(Materials Science) 2008年第5期23卷 638-643页

作者：廖海达 State key Lab of Advanced Technology for Materials Synthesis and processing Wuhan University of Technology College of Chemistry and Ecological Engineering Guangxi University for Nationalities key Lab of Nonferrous Materials and New processing Technology (Guangxi university Guilin University of Technology) Ministry of Education

With industrial grade Al（OH）3.as raw materials, the self dispersion nanosized AlOOH crystal powder were prepared by the sol-hydrothermal method. The results of XRD and TEM show that the nanosized AlOOH could automatically disperse to a single-dispersing state in water without surface modification, dispersant, additive and accessional conditions （ultrasonic wave dispersing, ball-mill dispersing）. The application results of the product indicate that the nanosized AlOOH can be composed into a toughened nanocomposites without surface modification. Accordingly, the self dispersion characteristic and mechanism of hydrothermal crystallization and charging composite dispersion of nanosized AIOOH are found, and a new technique of preparing polymer/inorganic nanocomposites is proposed, which is called blending compositing new techniques of sol even dispersing at auasi-homogeneous phase.

关键词： self dispersion nanosized AlOOH peptizing-hydrothermal method nanocomposites

Quick image-processing method of UAV without control points data in earthquake disaster area

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中国有色金属学会会刊：英文版 2011年第S3期21卷 523-528页

作者： LI Chang-chun1, ZHANG Guang-sheng1, LEI Tian-jie2, 3. GONG A-du2, 3.1. School of Surveying & Land Information Engineering, Henan Polytechnic university, Jiaozuo 454000, China 2. key Laboratory of Environmental Change and Natural Disaster, ministry of {3., Beijing Normal university, Beijing 100875, China 3. ministry of Civil Affairs/ministry of {3. of China Academy of Disaster Reduction and Emergency Management, Beijing Normal university, Beijing 100875, China [a] School of Surveying & Land Information Engineering Henan Polytechnic University Jiaozuo 454000 China [b] key Laboratory of Environmental Change and Natural Disaster Ministry of Education Beijing Normal University Beijing 100875 China [c] ministry of Civil Affairs/ministry of education of China Academy of Disaster Reduction and Emergency Management Beijing Normal University Beijing 100875 China

The methods of unmanned aerial vehicles images splicing rapidly and rectifying without control points data, only using auxiliary data recorded by unmanned aerial vehicle (UAV) system, were researched. Two algorithms were proposed, including UAV images auto- splicing rapidly after image blocking and UAV images rectifying based on pseudo center points of auxiliary data. When SIFT algorithm for UAV images splicing is applied, the accuracy is very high, but the efficiency is very low. The splicing efficiency is improved greatly based on SIFT algorithm after image blocking. The results show that rectifying accuracy is very high and has no visual dislocation when pseudo center points of auxiliary data is applied.

关键词： unmanned aerial vehicles SIFT algorithm blocking quickly splicing rectification

Effects of Pre-Ageing Treatment on Subsequent Artificial Ageing Characteristics of an Al-1.01Mg-0.68Si-1.78Cu Alloy

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Journal of Materials Science & Technology 2010年第2期26卷 141-145页

作者： Lizi He , Haitao Zhang and Jianzhong Cui key Lab of Electromagnetic processing of Materials, ministry of {3., Northeastern {3., Shenyang 110004, China [a] key Lab of Electromagnetic processing of Materials ministry of education Northeastern university Shenyang 110004 China

The influences of pre-ageing temperature and natural ageing time on subsequent artificial age hardening behavior and precipitation sequence of new type Al-1.01Mg-0.O8Si-l.78Cu alloy were investigated by hardness test, differential scanning calorimetry （DSC） test and transmission electronic microscopy （TEM） observations. When pre-ageing temperature is 20℃ （natural ageing）, the peak hardness of subsequent artificial aged alloy is lower than that of T6 treated alloy （negative effect）, while a positive effect appears when pre-ageing temperature is above 80℃. The size of needlelike /3.precipitate in subsequent artificial aged alloy is much coarser when pre-ageing temperature is 20℃, which causes a decrease in peak-hardness. The positive effect occurs again when natural ageing time is longer than 3.weeks. There are seven exothermic peaks in DSC curve of as-quenched alloy, while the number and height of exothermic peak decrease with increasing pre-ageing temperature and natural ageing time.

关键词： Al-Mg-Si-Cu alloy Pre-ageing treatment Age hardening Differential scanning calorimetry (DSC) curve

Silicon-based microelectrode arrays for stimulation and signal recording of in vitro cultured neurons

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Science China(Information Sciences) 2011年第10期54卷 2199-2208页

作者： PAN HaiXian 1,L XiaoYing 1 ,WANG ZhiGong 2,REN TianLing 3.FANG Tao 1,ZHANG Jie 1,ZHOU ChangJian 3.& WANG LiGang 3.1 State key Laboratory of Bioelectronics,southeast university,nanjing 2.0096,China 2 Institute of RF-& OE-ICs,southeast university,nanjing 2.0096,China 3.Institute of Microelectronics,Tsinghua university,Beijing 100084,China 1. State key Laboratory of Bioelectronics Southeast University Nanjing 210096 China2. Institute of RF-& OE-ICs Southeast University Nanjing 210096 China3. Institute of Microelectronics Tsinghua University Beijing 100084 China

Microelectrode arrays (MEAs) for stimulation and signal recording of in vitro cultured neurons are *** MEA is composed of 60 independent electrodes with 59 working ones and one reference *** electrodes are divided into 3. *** each pair of electrodes,four independent states can be realized to define the accessing modes of neurons cultured on the surface of the electrodes.A total MEA covers an area of 10 mm×10 *** are fabricated in a silicon-based semiconductor *** implemented MEA is bonded on a specially designed printed-circuit-board (PCB) and surrounded by a culture *** impedance measurement has been made to verify the electrical characteristics of *** surface was modified to enhance the biocompatibility.A series of PC12 cells culture experiments validates the effectiveness of the *** extracellular signal recording experiment with acetylcholine (Ach) as a stimulant has been carried out,and the results show the feasibility of MEAs for extracellular action potential *** electrical stimulation and recording experiments have been carried out *** indicate that MEAs can be used for extracellular stimulation,recording,simultaneous stimulation and recording,and isolation of PC12 cells network cultured in vitro.

关键词： microelectrode arrays (MEAs) extracellular recording stimulation and recording neurons net-work in vitro

Simulation study of phase retrieval for hard X-ray in-line phase contrast imaging

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Science China(Physics,Mechanics & Astronomy) 2005年第4期48卷 450-458页

作者： YU Bin1,2, PENG Xiang1,2, TIAN Jindong1, NIU Hanben1, DIAO Luhong3.& LI Hua3.1. key Laboratory of Optoelectronic Devices and Systems of ministry of education, Institute of Optoelec- tronics, Shenzhen {3., Shenzhen 518060, China 2. State key Laboratory of Precision Measuring Technology and Instruments, Tianjin {3., Tianjin 3.0072,China 3. key Laboratory of Intelligent Information processing, Institute of Computing Technology, Chinese Academy of Sciences, Beijing 100080,China 1. key Laboratory of Optoelectronic Devices and Systems of ministry of education Institute of Optoelectronics Shenzhen University 518060 Shenzhen China 2. State key Laboratory of Precision Measuring Technology and Instruments Tianjin University 300072 Tianjin China 3. key Laboratory of Intelligent Information processing Institute of Computing Technology Chinese Academy of Sciences 100080 Beijing China

Two algorithms for the phase retrieval of hard X-ray in-line phase contrast imaging are presented. One is referred to as Iterative Angular Spectrum Algorithm (IASA) and the other is a hybrid algorithm that combines IASA with TIE (transport of intensity equation). The calculations of the algorithms are based on free space propagation of the angular spectrum. The new approaches are demonstrated with numerical simulations. Comparisons with other phase retrieval algorithms are also performed. It is shown that the phase retrieval method combining the IASA and TIE is a promising technique for the application of hard X-ray phase contrast imaging.

关键词： X-ray optics, phase contrast imaging, phase retrieval, angular spectrum, hard X-ray.

Polymer-assisted nanoparticulate contrast-enhancing materials

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Science China Chemistry 2010年第3期53卷 479-486页

作者： DING Yin1,3.HU Yong2,WU Wei1 & JIANG XiQun1 1Laboratory of Mesoscopic Chemistry and Department of Polymer Science and Engineering,College of Chemistry & Chemical Engineering,nanjing university,nanjing 210093.China 2National Laboratory of Solid State Microstructure,Department of Material Science and Engineering,nanjing university,nanjing 210093.China 3.6} Laboratory of Analytical Chemistry for Life Science,ministry of education,School of Chemistry and Chemical Engineering,nanjing university,nanjing 210093.China 1. Laboratory of Mesoscopic Chemistry and Department of Polymer Science and Engineering College of Chemistry & Chemical Engineering Nanjing University Nanjing 210093 China3. Key Laboratory of Analytical Chemistry for Life Science Ministry of Education School of Chemistry and Chemical Engineering Nanjing University Nanjing 210093 China2. National Laboratory of Solid State Microstructure Department of Material Science and Engineering Nanjing University Nanjing 210093 China

The application of nanotechnology in medicine research has significant potential in modern biomedical research,disease diagnosis and *** fluorophore-based detection techniques have been widely used as imaging and signal transduction tools for the detection of trace levels of *** photosensitivity of the fluorophores,however,limits their application in such complex environments as living bio-systems where degradation or photobleaching *** nanoparticles have unique and stable optical,electrical,magnetic and catalytic properties because of their various shapes,sizes and *** potential of the nanoparticles as novel imaging agents has been studied as a possible solution to this *** modification of inorganic nanoparticles could enhance their biostability in physiological conditions and ability of targeting bioactive molecules.

关键词： contrast agent cell image gold nanoparticles iron oxide nanoparticles carbon nanotubes polymeric-inorganic hybrid nanoparticles

A Feedback-Based Web Search Engine

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Wuhan university Journal of Natural Sciences 2004年第5期9卷 561-568页

作者： ZHANG Wei-feng 1,2,3., XU Bao-wen 2,3.4 , ZHOU Xiao-yu 2,3.4 1. Department of Computer Science and Engineering, nanjing university of Posts and Telecommunications, nanjing 210003. Jiangsu, China 2. Department of Computer Science and Engineering, {3., nanjing 2.0096, Jiangsu, China 3. Jiangsu Institute of Software Quality, nanjing 2.0096 Jiangsu, China 4. The State key Laboratory of Software Engineering, Wuhan university, Wuhan 43.072, Hubei, China Department of Computer Science and Engineering Nanjing University of Posts and Telecommunications . Nanjing 210003 Jiangsu China

Web search engines are very useful information service tools in the Internet. The current web search engines produce search results relating to the search terms and the actual information collected by them. Since the selections of the search results cannot affect the future ones, they may not cover most people’s interests. In this paper, feedback information produced by the user’s accessing lists will be represented by the rough set and can reconstruct the query string and influence the search results. And thus the search engines can provide self-adaptability. key words WWW - search engine - query reconstruction - feedback CLC number TP 3.1. 13..4 Foundation item: Supported by the National Natural Science Fundation of China (603.3.66). National Grand Fundamental Research 973.Program of China (2002CB3.200). Opening Foundation of State key Laboratory of Software Engineering in Wuhan {3., Opening Foundation of Jiangsu key Laboratory of Computer Information processing Technology in Soochow {3.Biography: ZHANG Wei-feng (1975-), male, Ph.D. research direction: artificial intelligence, search engine, data mining, network language.

关键词： WWW search engine query reconstruction feedback