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Systems of Optical Security最新文献

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Usage of transformed phase masks in correlation systems for optical security 变换相位掩模在光学安全相关系统中的应用
Systems of Optical Security Pub Date : 2001-08-24 DOI: 10.1117/12.438435
L. Muravsky
{"title":"Usage of transformed phase masks in correlation systems for optical security","authors":"L. Muravsky","doi":"10.1117/12.438435","DOIUrl":"https://doi.org/10.1117/12.438435","url":null,"abstract":"The new optical security technique based on usage of the TPM is developed. The created experimental setups and optoelectronic device have proved the performance of this technique for security verifications of credit cards and other documents and products.","PeriodicalId":156625,"journal":{"name":"Systems of Optical Security","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128830158","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
Color image segmentation using optical models 利用光学模型进行彩色图像分割
Systems of Optical Security Pub Date : 2001-08-24 DOI: 10.1117/12.438436
D. Litwin, T. Tjahjadi, Herbert Yang
{"title":"Color image segmentation using optical models","authors":"D. Litwin, T. Tjahjadi, Herbert Yang","doi":"10.1117/12.438436","DOIUrl":"https://doi.org/10.1117/12.438436","url":null,"abstract":"In this paper we present an overview of various strategies for image segmentation, showing their advantages and drawbacks. The overview covers most of the methods from the classical statistical methods to model-based techniques, with a focus on color images. The paper concludes with a summary of our approach to identifying interreflection.","PeriodicalId":156625,"journal":{"name":"Systems of Optical Security","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115435784","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: 2
Effect of patient positions on measurement errors of the knee-joint space on radiographs 患者体位对x线片膝关节间隙测量误差的影响
Systems of Optical Security Pub Date : 2001-08-24 DOI: 10.1117/12.438447
G. Gilewska
{"title":"Effect of patient positions on measurement errors of the knee-joint space on radiographs","authors":"G. Gilewska","doi":"10.1117/12.438447","DOIUrl":"https://doi.org/10.1117/12.438447","url":null,"abstract":"Osteoarthritis (OA) is one of the most important health problems these days. It is one of the most frequent causes of pain and disability of middle-aged and old people. Nowadays the radiograph is the most economic and available tool to evaluate changes in OA. Error of performance of radiographs of knee joint is the basic problem of their evaluation for clinical research. The purpose of evaluation of such radiographs in my study was measuring the knee-joint space on several radiographs performed at defined intervals. Attempt at evaluating errors caused by a radiologist of a patient was presented in this study. These errors resulted mainly from either incorrect conditions of performance or from a patient's fault. Once we have information about size of the errors, we will be able to assess which of these elements have the greatest influence on accuracy and repeatability of measurements of knee-joint space. And consequently we will be able to minimize their sources.","PeriodicalId":156625,"journal":{"name":"Systems of Optical Security","volume":"97 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126895440","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: 2
Classical and neural methods of image sequence interpolation 图像序列插值的经典和神经方法
Systems of Optical Security Pub Date : 2001-08-24 DOI: 10.1117/12.438443
S. Skoneczny, J. Szostakowski
{"title":"Classical and neural methods of image sequence interpolation","authors":"S. Skoneczny, J. Szostakowski","doi":"10.1117/12.438443","DOIUrl":"https://doi.org/10.1117/12.438443","url":null,"abstract":"An image interpolation problem is often encountered in many areas. Some examples are interpolation for coding/decoding process for transmission purposes, reconstruction a full frame from two interlaced sub-frames in normal TV or HDTV, or reconstruction of missing frames in old destroyed cinematic sequences. In this paper an overview of interframe interpolation methods is presented. Both direct as well as motion compensated interpolation techniques are given by examples. The used methodology can also be either classical or based on neural networks depending on demand of a specific interpolation problem solving person.","PeriodicalId":156625,"journal":{"name":"Systems of Optical Security","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134361088","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
CO2 laser doping of Si layers with use of B2O3 as an effective procedure for increasing the sensitivity of detectors in security systems 用B2O3在CO2激光中掺杂Si层是提高安全系统中探测器灵敏度的有效方法
Systems of Optical Security Pub Date : 2001-08-24 DOI: 10.1117/12.438441
W. Proszak, O. Bonchyk, S. Kiyak, Zenon Gotral
{"title":"CO2 laser doping of Si layers with use of B2O3 as an effective procedure for increasing the sensitivity of detectors in security systems","authors":"W. Proszak, O. Bonchyk, S. Kiyak, Zenon Gotral","doi":"10.1117/12.438441","DOIUrl":"https://doi.org/10.1117/12.438441","url":null,"abstract":"This paper presents results of researches related with solid state doping of Si layers with use CO2 laser irradiation and B203 dopant. Unique properties of laser doping process let us create 10-100 nm doped layers of repeatable parameters.","PeriodicalId":156625,"journal":{"name":"Systems of Optical Security","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125378591","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
Tuning the color of artificial lighting to improve energy efficiency 调整人工照明的颜色以提高能源效率
Systems of Optical Security Pub Date : 2001-08-24 DOI: 10.1117/12.438437
Z. Turlej
{"title":"Tuning the color of artificial lighting to improve energy efficiency","authors":"Z. Turlej","doi":"10.1117/12.438437","DOIUrl":"https://doi.org/10.1117/12.438437","url":null,"abstract":"The paper presents two recently developed concepts involved with tuning the color of an artificial lighting to improve energy efficiency: 1) the scotopic/photopic ratio as the modified lamp lumens and 2) the search time as a measure of the visual performance in road lighting.","PeriodicalId":156625,"journal":{"name":"Systems of Optical Security","volume":"104 45","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120825655","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: 2
Applications of colorimetry in machine vision for checking electronic components and quality of pulp paper 比色法在机器视觉检测电子元件和纸浆质量中的应用
Systems of Optical Security Pub Date : 2001-08-24 DOI: 10.1117/12.438433
P. Tantaswadi
{"title":"Applications of colorimetry in machine vision for checking electronic components and quality of pulp paper","authors":"P. Tantaswadi","doi":"10.1117/12.438433","DOIUrl":"https://doi.org/10.1117/12.438433","url":null,"abstract":"Application of colorimetry in color identification for checking electronic components and quality of pulp paper is proposed. Inspection of missing electronic components during the assembly of the printed circuit board and dirty portions on pulp paper can be done by an analysis of color image. This method helps to improve the image-processing speed. Additionally, the inspection accuracy can be attained by the use of color iso discrimination contour criterion.","PeriodicalId":156625,"journal":{"name":"Systems of Optical Security","volume":"482 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115889082","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: 4
Liquid crystal thermography and thermovision in medical applications: pulmonological diagnostics 液晶热成像和热视觉在医学上的应用:肺病诊断
Systems of Optical Security Pub Date : 2001-08-24 DOI: 10.1117/12.438448
Stanislaw J. Klosowicz, A. Jung, J. Żuber
{"title":"Liquid crystal thermography and thermovision in medical applications: pulmonological diagnostics","authors":"Stanislaw J. Klosowicz, A. Jung, J. Żuber","doi":"10.1117/12.438448","DOIUrl":"https://doi.org/10.1117/12.438448","url":null,"abstract":"An application of thermographic methods in pulmonological diagnostics in children is presented. Basic information concerning liquid crystal contact thermography is given. Diagnostic procedures and essential conclusions are described.","PeriodicalId":156625,"journal":{"name":"Systems of Optical Security","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121846089","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: 5
Set of line gratings as a diffraction structure protecting optical signs against copying: new proposal including colorimetric aspects 一组线光栅作为衍射结构，保护光学标志免受复制:包括比色方面的新建议
Systems of Optical Security Pub Date : 2001-08-24 DOI: 10.1117/12.438432
Z. Kraska, M. Szyjer, A. Kowalik
{"title":"Set of line gratings as a diffraction structure protecting optical signs against copying: new proposal including colorimetric aspects","authors":"Z. Kraska, M. Szyjer, A. Kowalik","doi":"10.1117/12.438432","DOIUrl":"https://doi.org/10.1117/12.438432","url":null,"abstract":"Well known properties of diffraction gratings are connected with their response to wavelength and polarization state of light incident on a grating. Although diffraction gratings are used as one of structures in modern optical security sings, their interesting properties seem to be rather rarely taken into consideration for distinguishing between originals and 'illegal' copies of optical marks. In this paper a relative simple diffraction structure and corresponding alterative method of inspection are proposed. This method can be particularly useful for machine reading, although its usability for visual inspection can also be considered.","PeriodicalId":156625,"journal":{"name":"Systems of Optical Security","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128076988","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
Laser monitoring of the environment in conditions of a priori uncertainty 在先验不确定性条件下对环境进行激光监测
Systems of Optical Security Pub Date : 2001-08-24 DOI: 10.1117/12.438452
M. Kugeiko, D. M. Onoshko
{"title":"Laser monitoring of the environment in conditions of a priori uncertainty","authors":"M. Kugeiko, D. M. Onoshko","doi":"10.1117/12.438452","DOIUrl":"https://doi.org/10.1117/12.438452","url":null,"abstract":"In this paper there is considered technique for the remote determination of scattering media optical characteristics based upon the concept of absence of a priori information. This technique includes the acquisition of reference values from measured signals themselves, which are informative relative to the determined characteristics, as well as the correction of the signals for the degree of changes of medium qualitative composition.","PeriodicalId":156625,"journal":{"name":"Systems of Optical Security","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126808127","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
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