ICMIT: Mechatronics and Information Technology最新文献_第5页

A blind watermarking using data matrix and changing coefficients in wavelet domain 基于数据矩阵和小波域变换系数的盲水印方法

ICMIT: Mechatronics and Information Technology Pub Date : 2007-12-10 DOI: 10.1117/12.784035

Jong Sam Park, B. Nam

{"title":"A blind watermarking using data matrix and changing coefficients in wavelet domain","authors":"Jong Sam Park, B. Nam","doi":"10.1117/12.784035","DOIUrl":"https://doi.org/10.1117/12.784035","url":null,"abstract":"In this paper, we propose a blind watermarking using the Discrete Wavelet Transform (DWT) technique. We have shown a robustness in several attacks by inserting the watermark in the frequency domain instead of spatial domain in the image. Also, we can extract watermark without the original image using this blind watermarking. An original image is transformed into the 4 sub-band areas (HH, HL, LH, LL) by the DWT. We select the two sub-band areas (HL, LH) for watermarking, except for the low-low (LL, HH) sub-band area. For watermarking, a watermark is encrypted by an encryption key, and it holds a certain value of two sub-bands, which is selected according to the value of watermark that we want to insert or change. And we insert watermark to the image. For extraction, a watermarked image is transformed by DWT, we compare the coefficient values of two sub-bands used in inserting watermarking, we extract the encrypted watermark, and we reconstruct the watermark by the encryption key. We apply the proposed method to the data matrix that is a two-dimension bar-code. For error detection code and error correction code, we use the ECC 200. For the JPEG image with the watermark, we could get the better PSNR(Peak Signal to Noise Ratio) and NC(Normalized Correlation) for the performance evaluation.","PeriodicalId":250590,"journal":{"name":"ICMIT: Mechatronics and Information Technology","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121345900","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Approximate analysis of self-excited vibration for flat-type wind generator 平板式风力发电机自激振动近似分析

ICMIT: Mechatronics and Information Technology Pub Date : 2007-12-10 DOI: 10.1117/12.784460

Satoru Yoshikawa, I. Tanaka, T. Kondo, T. Hirota, H. Hosaka

引用次数: 0

Using ant colony optimization for efficient clustering 利用蚁群算法进行高效聚类

ICMIT: Mechatronics and Information Technology Pub Date : 2007-12-10 DOI: 10.1117/12.784045

Yong Wang, Wei Zhang, Jun Chen, Jianfu Li, Li Xiao

引用次数: 1

Robust critical control of uncertain systems using disturbance observes 基于扰动观测的不确定系统鲁棒临界控制

ICMIT: Mechatronics and Information Technology Pub Date : 2007-12-10 DOI: 10.1117/12.784169

T. Ono

引用次数: 0

Vibration evaluation of nonlinear system under random parametric excitations by probabilistic method 随机参数激励下非线性系统振动评估的概率方法

ICMIT: Mechatronics and Information Technology Pub Date : 2007-12-10 DOI: 10.1117/12.783859

Sin-Young Lee, G. Cai

引用次数: 0

Three methods of formulation to increment of load bus voltage magnitude in power system 电力系统中负荷母线电压幅值增加的三种计算方法

ICMIT: Mechatronics and Information Technology Pub Date : 2007-12-10 DOI: 10.1117/12.784212

Q. Liao, Zushu Li, Guoyu Xu, Weigen Wu

{"title":"Three methods of formulation to increment of load bus voltage magnitude in power system","authors":"Q. Liao, Zushu Li, Guoyu Xu, Weigen Wu","doi":"10.1117/12.784212","DOIUrl":"https://doi.org/10.1117/12.784212","url":null,"abstract":"In this paper, three methods are proposed in order to formulate increment of load bus voltage magnitude in power system during a machine-electric transient process, in which the increment of load bus voltage magnitude is composed of two components. In the first method, one component is proportional to increment of amplitude of current, and another is proportional to increment of module of load equivalent impedance. In the second, one component is proportional to increment of power, which apparent power reactive power and active power can respectively be used to represent, and another is related to variation of load equivalent impedance, which can be formulated in three forms accordingly. In the third, a new term, power per one impedance unit (PPOIU) which is defined by the square of amplitude of current, is proposed. One component is proportional to increment of PPOIU at the bus, and another is proportional to increment of module of the equivalent impedance. In this paper, the three methods are compared with each other. As a result, the third method can universally be used during any machine-electric transient process, is the simplest, link up strongly with existing analysis method, and expediently explain the voltage stability mechanism of power system, so it can be used as a basic method to formulate increment of load bus voltage magnitude for power system voltage stability.","PeriodicalId":250590,"journal":{"name":"ICMIT: Mechatronics and Information Technology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129585869","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Research of the measure principle of the liquor resonance sensor 白酒谐振传感器测量原理的研究

ICMIT: Mechatronics and Information Technology Pub Date : 2007-12-10 DOI: 10.1117/12.783866

Qi Zhou, Shengxiong Liu, Ke Xu, Cuicui Min, Shijun Xu, Jun Xiao

{"title":"Research of the measure principle of the liquor resonance sensor","authors":"Qi Zhou, Shengxiong Liu, Ke Xu, Cuicui Min, Shijun Xu, Jun Xiao","doi":"10.1117/12.783866","DOIUrl":"https://doi.org/10.1117/12.783866","url":null,"abstract":"Various sensors based on the piezoelectric crystal have been widely used in the process of research. Currently, the research and application of the piezoelectric sensors are mostly based on the \"mass responses\" and \"non-mass responses\" of the piezoelectric crystal. But in the researches and applications of the piezoelectric crystal sensors, many phenomenons have been found which can not be explained and can not accord with the Sauerbrey theory based on the \"mass responses\". And the scholars often explained those phenomenons with the \"non-mass response of the piezoelectric crystal\" [1]. In our researches, we improved the detectors and got some primary experimental results. And the results showed that the non-mass respones has no relation to the piezoelectric sensor, and it related to the characteristics of the liquor itself. Based on the results, it can be reckoned that this is a new physical phenomenon, that is to say, the liquor has the electrical resonance characteristic which likes the characteristic of the piezoelectric crystal, and can identify the characteristic of the liquor using the frequency of the electrical resonance. As soon as any of the characteristics of the liquor changed such as component, and density, the resonance frequency will change accordingly.","PeriodicalId":250590,"journal":{"name":"ICMIT: Mechatronics and Information Technology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129845443","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

ARM-based control system for terry rapier loom 基于arm的毛巾纸剑杆织机控制系统

ICMIT: Mechatronics and Information Technology Pub Date : 2007-12-10 DOI: 10.1117/12.784204

W. Shi, Yeqin Gu, Zhenyu Wu, Fan Wang

引用次数: 1

A watershed algorithm for image segmentation with B-spline function 基于b样条函数的分水岭图像分割算法

ICMIT: Mechatronics and Information Technology Pub Date : 2007-12-10 DOI: 10.1117/12.784392

Chengbo Yu, Huafeng Qin, Hongyan Tao

引用次数: 1

An immuno-biosensor system based on quartz crystal microbalance for avian influenza virus detection 基于石英晶体微天平的禽流感病毒检测免疫生物传感器系统

ICMIT: Mechatronics and Information Technology Pub Date : 2007-12-10 DOI: 10.1117/12.783971

Shengping Liu, Guoming Chen, Qi Zhou, Yunlong Wei

{"title":"An immuno-biosensor system based on quartz crystal microbalance for avian influenza virus detection","authors":"Shengping Liu, Guoming Chen, Qi Zhou, Yunlong Wei","doi":"10.1117/12.783971","DOIUrl":"https://doi.org/10.1117/12.783971","url":null,"abstract":"For the quick detection of Avian Influenza Virus (AIV), a biosensor based on Quartz Crystal Microbalance (QCM) was fabricated according to the specific bonding principle between antibody and antigen. Staphylococcal Protein A (SPA) was extracted from Staphylococcus and purified. Then SPA was coated on the surface of QCM for immobilizing AIV monoclonal antibodies. The use of AIV monoclonal antibody could enhance the specificity of the immuno-biosensor. A multi-channel piezoelectricity detection system for the immuno-biosensor was developed. The system can work for the quick detection of AIV antigen in the case of the entirely aqueous status owe to one special oscillating circuit designed in this work. The optimum conditions of SPA coating and AIV monoclonal antibody immobilization were investigated utilizing the multi-channel detection system. The preliminary application of the immuno-biosensor system for detection of AIV was evaluated. Results indicate that the immuno-biosensor system can detect the AIV antigens with a linear range of 3-200ng/ml. The system can accomplish the detection of AIV antigens around 40 minutes.","PeriodicalId":250590,"journal":{"name":"ICMIT: Mechatronics and Information Technology","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123230972","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3