发布求助
文献互助 智能选刊 最新文献

Systems of Optical Security最新文献

筛选
英文 中文
Light driving optimization for optical fibers applied in signaling 用于信号传输的光纤光驱动优化
Systems of Optical Security Pub Date : 2001-08-24 DOI: 10.1117/12.438446
Longin Kociszewski, D. Denis
{"title":"Light driving optimization for optical fibers applied in signaling","authors":"Longin Kociszewski, D. Denis","doi":"10.1117/12.438446","DOIUrl":"https://doi.org/10.1117/12.438446","url":null,"abstract":"The results of scientific and technological experiments performed in the Glass Department of the Institute of Electronic Materials Technology in Warsaw are presented in this paper.","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":"133198346","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
Joint transform correlation using a ferroelectric liquid crystal spatial light modulator 铁电液晶空间光调制器的联合变换相关
Systems of Optical Security Pub Date : 2001-08-24 DOI: 10.1117/12.438434
S. Różański, H. Pauwels
{"title":"Joint transform correlation using a ferroelectric liquid crystal spatial light modulator","authors":"S. Różański, H. Pauwels","doi":"10.1117/12.438434","DOIUrl":"https://doi.org/10.1117/12.438434","url":null,"abstract":"The joint transform correlator with a ferroelectric liquid crystal spatial light modulator in the input plane has ben used to study sensitivity of the system on the minor changes in the input object. The binarization and edge enhancement significantly improve the quality of the recognition and intensity of cross-correlation peaks. The system is very sensitive on the minor changes in the input objects. The intensity of the cross-correlation peaks, which is a direct measure of the similarity between objects in the input plane, decreases with increasing of the differences in compared images.","PeriodicalId":156625,"journal":{"name":"Systems of Optical Security","volume":"6 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":"132046489","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
Liquid crystalline fiber optic colorimeter for hydrostatic pressure measurement 液体静压测量用液晶光纤比色计
Systems of Optical Security Pub Date : 2001-08-24 DOI: 10.1117/12.438445
T. Wolinski, Waldemar K. Bajdecki, A. Domanski, M. Karpierz, W. Konopka, T. Nasilowski, M. Sierakowski, M. Swillo, R. Dabrowski, E. Nowinowski-Kruszelnicki, J. Wasowski
{"title":"Liquid crystalline fiber optic colorimeter for hydrostatic pressure measurement","authors":"T. Wolinski, Waldemar K. Bajdecki, A. Domanski, M. Karpierz, W. Konopka, T. Nasilowski, M. Sierakowski, M. Swillo, R. Dabrowski, E. Nowinowski-Kruszelnicki, J. Wasowski","doi":"10.1117/12.438445","DOIUrl":"https://doi.org/10.1117/12.438445","url":null,"abstract":"This paper presents results of tests performed on a fiber optic system of liquid crystalline transducer for hydrostatic pressure monitoring based on properties of colorimetry. The system employs pressure-induced deformations occurring in liquid crystalline (LC) cells configured in a homogeneous Frederiks geometry. The sensor is compared of a round LC cell placed inside a specially designed pressure chamber. As a light source we used a typical diode operating at red wavelength and modulated using standard techniques. The pressure transducer was connected to a computer with a specially designed interface built on the bas of advanced ADAM modules. Results indicate that the system offers high response to pressure with reduced temperature sensitivity and, depending on the LC cell used, can be adjusted for monitoring of low hydrostatic pressures up to 6 MPa. These studies have demonstrated the feasibility of fiber optic liquid crystal colorimeter for hydrostatic pressure sensing specially dedicated to pipe- lines, mining instrumentation, and process-control technologies.","PeriodicalId":156625,"journal":{"name":"Systems of Optical Security","volume":"32 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":"133437279","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
Optoelectronic blood oximetry as a tool of health safety monitoring 光电血氧仪作为健康安全监测的工具
Systems of Optical Security Pub Date : 2001-08-24 DOI: 10.1117/12.438427
A. Cysewska-Sobusiak
{"title":"Optoelectronic blood oximetry as a tool of health safety monitoring","authors":"A. Cysewska-Sobusiak","doi":"10.1117/12.438427","DOIUrl":"https://doi.org/10.1117/12.438427","url":null,"abstract":"A metrological approach of some selected problems connected with the significant field of biomedical optics i.e., monitoring of arterial blood oxygenation by use of the tissues as optical media exposed to the controlled light action, has been presented. The subject of the measurements based on utilization of the selection absorption properties of blood is the hemoglobin oxygen saturation. Using optoelectronic sensing allows to convert sophisticated effects of noninvasive light-living tissue interaction to electrical signals which may be convenient to measure. Pulse oximetry which is based upon such a way of sensing and processing, is the recent advance in noninvasive oximetry. The unique advantages of that marvelous diagnostic technique have caused to recommend pulse oximeters as standard equipment in intensive care and other critical situations impending hypoxemia appearance. However, end-users of the pulse oximeters not always are aware of that these devices fall under specific limitations, of both physiological and technical nature. The author of this paper is a metrologist and deals mainly with various interdisciplinary problems of a measurement reliability including the aspects such as uncertainty of an outcome accessible to the user, causes affecting sensitivity, resolution and repeatability of processing function, and response time and stability of results. Referring to the subject discussed herein, and taking into account some open questions, the author's contribution is her own experience in modeling as well as in in vivo measuring of transilluminated living objects. A proposed novel use of the known pulse oximetry concept may be considered as complementary results against a general review background of the achievements obtained in oximetry as the state-of-the-art, and furthermore, the developing studies which are still in progress.","PeriodicalId":156625,"journal":{"name":"Systems of Optical Security","volume":"56 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":"127182075","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
Use of computed tomography methods for investigating electromagnetic wave attenuation distribution in the Earth 利用计算机断层扫描方法研究地球上电磁波的衰减分布
Systems of Optical Security Pub Date : 2001-08-24 DOI: 10.1117/12.438428
A. Pralat, R. Zdunek
{"title":"Use of computed tomography methods for investigating electromagnetic wave attenuation distribution in the Earth","authors":"A. Pralat, R. Zdunek","doi":"10.1117/12.438428","DOIUrl":"https://doi.org/10.1117/12.438428","url":null,"abstract":"Electromagnetic geotomography was presented, in which the distribution of electromagnetic waves attenuation coefficient in the earth was investigated. The method of measurement result processing was proposed, what resulted in the considerable reduction of the measured data errors level. The errors were classified as following: impulse disturbances, stochastic scatter of measurement results and errors resulting from the limitation of the field strength measurement instrument sensibility. The scope of applicability of the image reconstruction methods in electromagnetic geotomography was characterized. For this purpose, the following algorithms were selected: EM, MAP and RAMLA. The results of the image reconstruction of the electromagnetic waves attenuation distribution investigated in two different regions were illustrated. The comparative characteristics of the utilization effectiveness of the particular algorithms for the mentioned purpose was presented.","PeriodicalId":156625,"journal":{"name":"Systems of Optical Security","volume":"213 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":"123017063","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
Principles of development of calibration-free systems of optical biomedical diagnostics 光学生物医学诊断无校准系统的开发原理
Systems of Optical Security Pub Date : 2001-08-24 DOI: 10.1117/12.438438
M. Kugeiko, A. V. Barkova
{"title":"Principles of development of calibration-free systems of optical biomedical diagnostics","authors":"M. Kugeiko, A. V. Barkova","doi":"10.1117/12.438438","DOIUrl":"https://doi.org/10.1117/12.438438","url":null,"abstract":"The principles of development of 'calibration-free' optoelectronic systems of biomedical diagnostics are considered. This system eliminates as much methodical errors caused by the changes of instrumental constants of emitting- receiving and recording blocks, by the pollution of optical surface, by the state of sued cuvettes, etc. The evaluation of accuracy of proposed methods is given.","PeriodicalId":156625,"journal":{"name":"Systems of Optical Security","volume":"140 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":"116444795","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
Optical protective pigments for printed inks and polymer fibers with triple ultraviolet and infrared excitation 印刷油墨和聚合物纤维用紫外和红外三重激发光学保护颜料
Systems of Optical Security Pub Date : 2001-08-24 DOI: 10.1117/12.438431
A. Gorelenko, L. Korochkin, S. Pliska
{"title":"Optical protective pigments for printed inks and polymer fibers with triple ultraviolet and infrared excitation","authors":"A. Gorelenko, L. Korochkin, S. Pliska","doi":"10.1117/12.438431","DOIUrl":"https://doi.org/10.1117/12.438431","url":null,"abstract":"Counterfeited goods and documents existed always in the history and they still exist. In spite of the all undertaken protection means against forgery, the well-equipped and highly skilled individuals are able to copy many important documents. There is also no doubt that many strategically important products are placed on the market, illegally. Therefore, every one who is dealing with this problem should not only be concerned with the prevention of the falsifying, illegal copying or all kinds of faking but also with the methods for proper identification. To protect documents or products against forgery, one has to introduce an additional function that will alloy identifying its originality, definitively.","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":"127409466","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
Optical method of identification of electric parameters of ferroelectrics 铁电体电参数识别的光学方法
Systems of Optical Security Pub Date : 2001-08-24 DOI: 10.1117/12.438440
W. Proszak
{"title":"Optical method of identification of electric parameters of ferroelectrics","authors":"W. Proszak","doi":"10.1117/12.438440","DOIUrl":"https://doi.org/10.1117/12.438440","url":null,"abstract":"Investigative works were focused on design and realization of the computer set for registration and calculation of parameters of the domain structure of non-linear ferroelectrics, measurements were based on analysis of the domain's image, in polarized light reflected and passing through the same, with use of liquid toner deposited on it. We worked out measurement algorithms as well as algorithms of image analysis. Static measurements of quantity of domains in the observation field, their surface and perimeter in various growth pyramids, were conducted for Tri-glycine Sulphate doped with Lysine.","PeriodicalId":156625,"journal":{"name":"Systems of Optical Security","volume":"63 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":"131036009","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
Thermal imaging for face recognition in optical security systems 光学安全系统中人脸识别的热成像技术
Systems of Optical Security Pub Date : 2001-08-24 DOI: 10.1117/12.438439
J. Kobel, I. Hołowacz, Halina Podbielska
{"title":"Thermal imaging for face recognition in optical security systems","authors":"J. Kobel, I. Hołowacz, Halina Podbielska","doi":"10.1117/12.438439","DOIUrl":"https://doi.org/10.1117/12.438439","url":null,"abstract":"Face recognition belongs to the most fundamental human perceptual capabilities. Today, the technology is encapsulated in commercial software that runs on any low cost personal computer and is capable to detect the human faces anywhere in a scene and rapidly identifying them by matching the face against its database of known faces.","PeriodicalId":156625,"journal":{"name":"Systems of Optical Security","volume":"10 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":"116750619","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
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信