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Systems of Optical Security最新文献

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Temperature sensor based on double-core optical fiber 基于双芯光纤的温度传感器
Systems of Optical Security Pub Date : 2002-07-22 DOI: 10.1117/12.475992
Ryszard S. Romaniuk, J. Dorosz
{"title":"Temperature sensor based on double-core optical fiber","authors":"Ryszard S. Romaniuk, J. Dorosz","doi":"10.1117/12.475992","DOIUrl":"https://doi.org/10.1117/12.475992","url":null,"abstract":"We report the theoretical and experimental study of a temperature sensor based on the changing of the refractive index with the temperature in double core optical fibre. Because of it the coupling coefficient between two cores depends on temperature. This sensor uses the double core fibre directly as a temperature sensor as well to a data transmission. The influence of variations of the temperature from 0°C to 135°C on the coupling coefficient (refractive index) is measured and we received the relation between the temperature and the signal in coupled core. This kind of sensor can be used for public safety, health and security systems.","PeriodicalId":156625,"journal":{"name":"Systems of Optical Security","volume":"94 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126232587","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: 14
Use of a CCD-monitored chemiluminescence imaging for sensing of the UV-and ozone-induced degradation of humus substances 利用ccd监测的化学发光成像来感应紫外线和臭氧引起的腐殖质物质的降解
Systems of Optical Security Pub Date : 2002-07-22 DOI: 10.1117/12.475987
Z. Górski, J. Sławiński
{"title":"Use of a CCD-monitored chemiluminescence imaging for sensing of the UV-and ozone-induced degradation of humus substances","authors":"Z. Górski, J. Sławiński","doi":"10.1117/12.475987","DOIUrl":"https://doi.org/10.1117/12.475987","url":null,"abstract":"The single photoelectron counting imaging technique of ultraweak chemiluminescence accompanying oxidative degradation reactions of humus substances under the influence of detrimental environmental physical and chemical factors is described. A new type of a slow scan charge coupled device camera Molecular Light Imager was applied to quantify the spatial distribution of the ultraweak chemiluminescence from natural and model humic acids and mineral soil components (silica gel) exposed to UV-C, UV+VIS radiation, ozone and acid rains. The transformation algorithm was elaborated to obtain the state of the art. pseudocolored images and quantification of the intensity and kinetics and to elucidate mechanisms of the studied processes as well as their environmental significance.","PeriodicalId":156625,"journal":{"name":"Systems of Optical Security","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133935841","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
Sensors in air and gas monitoring 空气和气体监测传感器
Systems of Optical Security Pub Date : 2002-07-22 DOI: 10.1117/12.475991
A. Nowakowski
{"title":"Sensors in air and gas monitoring","authors":"A. Nowakowski","doi":"10.1117/12.475991","DOIUrl":"https://doi.org/10.1117/12.475991","url":null,"abstract":"Basic problems existing in monitoring of air and gases are reviewed. The state of the art in related sensor technology is discussed. Especially practical implementation ofnew sensor technology is underlined.","PeriodicalId":156625,"journal":{"name":"Systems of Optical Security","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117009687","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
Laser ceilometer with pseudo random code modulation for cloud high measurements 激光测高仪与伪随机码调制云高测量
Systems of Optical Security Pub Date : 2001-08-24 DOI: 10.1117/12.438429
Krzysztof Holejko, R. Nowak
{"title":"Laser ceilometer with pseudo random code modulation for cloud high measurements","authors":"Krzysztof Holejko, R. Nowak","doi":"10.1117/12.438429","DOIUrl":"https://doi.org/10.1117/12.438429","url":null,"abstract":"This paper present a CW low power ceilometer designed for cloud base high measurements. The 500mW CW IR laser of the ceilometer is modulated by a pseudo noise sequence. The scattered and delayed light signal is received by a correlation system with output bandwidth of only 3,5 Hz. This enables to obtain the ranges of 1.2 km to the clouds and the accuracy of the order of +/- 2.5 m to the solid objects. The following issues are discussed: principle of operation, deice architecture and error estimation. Some measurement results are also enclosed.","PeriodicalId":156625,"journal":{"name":"Systems of Optical Security","volume":"86 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":"132384248","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
Significance of colors and contrasts in the life of the visually impaired 色彩和对比在视障人士生活中的重要性
Systems of Optical Security Pub Date : 2001-08-24 DOI: 10.1117/12.438451
Igor Sielicki, Z. Bartkowski, J. Bartkowska
{"title":"Significance of colors and contrasts in the life of the visually impaired","authors":"Igor Sielicki, Z. Bartkowski, J. Bartkowska","doi":"10.1117/12.438451","DOIUrl":"https://doi.org/10.1117/12.438451","url":null,"abstract":"Implementation of the advances in all the domains of public life doesn't keep pace with the needs of the visually impaired. Therefor it is necessary to indicate these problems, that can be solved immediately, with advantage to visually impaired without special accommodations. Last times unprecise road traffic legislation can increase hazards to pedestrians in the streets, what pertains to many visually impaired. In these relations the visually impaired for whom the external world is seen without details, better perceives colors and contrast. There are presented some examples form the road traffic signaling and housing, to be modified without special difficulties and costs.","PeriodicalId":156625,"journal":{"name":"Systems of Optical Security","volume":"41 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":"115291511","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
Review of optical techniques for protection of documents and other objects 审查保护文件和其他物体的光学技术
Systems of Optical Security Pub Date : 2001-08-24 DOI: 10.1117/12.438430
Halina Podbielska, J. Kobel
{"title":"Review of optical techniques for protection of documents and other objects","authors":"Halina Podbielska, J. Kobel","doi":"10.1117/12.438430","DOIUrl":"https://doi.org/10.1117/12.438430","url":null,"abstract":"Some novel as well as known solutions and practical examples of application of quantum and wave optics technologies for optical security will be discussed. Absorption of photons can result in photothermodestruction, what is used for laser engraving. Absorbed photons may also evoke the luminescence. UV luminescence for protection of securities will be pointed out. Advantages of anti-Stokes IR luminescence will be presented as well. Wave optics phenomena like diffraction or interference, are practically used for construction of various types of optically variable devices for optical security. The protection by exploiting of interference phenomena in thin films will be pointed out, as well. The place of the discussed techniques in various security lines will be presented.","PeriodicalId":156625,"journal":{"name":"Systems of Optical Security","volume":"77 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":"126988848","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
Motion estimation from image sequences: classical vs. neural-network-based approaches 图像序列的运动估计:经典与基于神经网络的方法
Systems of Optical Security Pub Date : 2001-08-24 DOI: 10.1117/12.438442
J. Szostakowski, S. Skoneczny
{"title":"Motion estimation from image sequences: classical vs. neural-network-based approaches","authors":"J. Szostakowski, S. Skoneczny","doi":"10.1117/12.438442","DOIUrl":"https://doi.org/10.1117/12.438442","url":null,"abstract":"Motion information is used for many image sequences filtering algorithms and coding. In the paper the bases of apparent motion description are presented. Next, on the basis of available literature, the review of existing classical, deterministic motion estimation algorithms and algorithms based on the artificial neural networks is presented. The algorithms based on block-matching, gradient algorithms, spatio-temporal energy methods and model-based methods are described in details. The different classes of artificial neural networks which can be used for 2D motion estimation problems' solution are also presented.","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":"121829694","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
Contamination and color appearance of antireflection coatings on spectacles 眼镜上防反射涂层的污染和颜色外观
Systems of Optical Security Pub Date : 2001-08-24 DOI: 10.1117/12.438450
Ludomir Wlodarski, J. Kubrak
{"title":"Contamination and color appearance of antireflection coatings on spectacles","authors":"Ludomir Wlodarski, J. Kubrak","doi":"10.1117/12.438450","DOIUrl":"https://doi.org/10.1117/12.438450","url":null,"abstract":"Changes in the residual reflection color of antireflection coatings caused mainly by contamination are discussed and explained.","PeriodicalId":156625,"journal":{"name":"Systems of Optical Security","volume":"91 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":"133268009","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
Dry tests: construction, principle of action, and application 干式试验:结构、作用原理及应用
Systems of Optical Security Pub Date : 2001-08-24 DOI: 10.1117/12.438453
A. Chwojnowski
{"title":"Dry tests: construction, principle of action, and application","authors":"A. Chwojnowski","doi":"10.1117/12.438453","DOIUrl":"https://doi.org/10.1117/12.438453","url":null,"abstract":"A short description of dry test constructions, chemical principles of action are presented. An example of statement of reflection spectra of described dry tests were shown. For this spectra the best region for determination of analytes by reflectance were selected. The results of a few examples of determination pollution in water an din milk were shown. The all determination had been carried out by dry tests. The reading was performed by comparison with a color scale. In case of flood water analysis determination had been carried out by comparison with a color scale, reflectometrically and by means of classic colorimetric methods.","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":"114432958","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
Unbalanced Michelson's interferometer as a fiber optic distributed sensor of external signals 非平衡迈克尔逊干涉仪作为外部信号的光纤分布式传感器
Systems of Optical Security Pub Date : 2001-08-24 DOI: 10.1117/12.438444
M. Chojnacki, M. Szustakowski, M. Życzkowski
{"title":"Unbalanced Michelson's interferometer as a fiber optic distributed sensor of external signals","authors":"M. Chojnacki, M. Szustakowski, M. Życzkowski","doi":"10.1117/12.438444","DOIUrl":"https://doi.org/10.1117/12.438444","url":null,"abstract":"The subject of this work is a novel fiber optic distributed sensor system. The system uses a technique called multiplexed reflectometric interferometry to measure dynamic strain in a network of single mode optical fiber sensors. The sensor is constructed on unbalanced fiber optic Michelson's interferometer is activated by series of double pulse. The time interval between those pulses depends on the length of the section of sensor. Acousto-optical modulator acts as an optical frequency shifter. A change in a frequency of electrical pulses exciting the modulator result in a frequency shift in each generated wave packet.","PeriodicalId":156625,"journal":{"name":"Systems of Optical Security","volume":"22 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":"127832342","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
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