Pub Date : 2010-07-12DOI: 10.1109/WIO.2010.5582484
T. Fournel
A type of Probabilistic Visual Secret Sharing Scheme giving non-expansive and meaningful shadow images is here introduced. A binary secret image is shared from any natural color image by transfering the host content to each shadow and to their combination.
{"title":"Chromatic sharing a binary secret within a host image","authors":"T. Fournel","doi":"10.1109/WIO.2010.5582484","DOIUrl":"https://doi.org/10.1109/WIO.2010.5582484","url":null,"abstract":"A type of Probabilistic Visual Secret Sharing Scheme giving non-expansive and meaningful shadow images is here introduced. A binary secret image is shared from any natural color image by transfering the host content to each shadow and to their combination.","PeriodicalId":201478,"journal":{"name":"2010 9th Euro-American Workshop on Information Optics","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134476556","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}
Pub Date : 2010-07-12DOI: 10.1109/WIO.2010.5582500
H. Kellock, Tero Setala, A. Friberg, T. Shirai
The second- and third-order temporal ghost imaging setups with classical light are discussed. The second-order scheme has a single reference arm with a temporal lens and dispersive elements, and an object arm containing an object surrounded by dispersive media. The third-order imaging setup contains two reference arms instead of one. Both setups have a temporally completely incoherent light source providing maximum resolution. The dependence of visibility and resolution of the images on system parameters is considered in both setups.
{"title":"Temporal double- and triple-intensity correlation imaging with classical light","authors":"H. Kellock, Tero Setala, A. Friberg, T. Shirai","doi":"10.1109/WIO.2010.5582500","DOIUrl":"https://doi.org/10.1109/WIO.2010.5582500","url":null,"abstract":"The second- and third-order temporal ghost imaging setups with classical light are discussed. The second-order scheme has a single reference arm with a temporal lens and dispersive elements, and an object arm containing an object surrounded by dispersive media. The third-order imaging setup contains two reference arms instead of one. Both setups have a temporally completely incoherent light source providing maximum resolution. The dependence of visibility and resolution of the images on system parameters is considered in both setups.","PeriodicalId":201478,"journal":{"name":"2010 9th Euro-American Workshop on Information Optics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121342506","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}
Pub Date : 2010-07-12DOI: 10.1109/WIO.2010.5582524
M. Gross, F. Verpillat, F. Joud, M. Atlan
Heterodyne Holography is a variant of Digital Holography, where the optical frequencies of signal and reference arms can be freely adjusted by acousto-optic modulators. Heterodyne Holography is an extremely versatile and reliable holographic technique, which is able the reach the shot noise limit in sensitivity at very low levels of signal. Frequency tuning enables Heterodyne Holography to become a Laser Doppler imaging technique that is able to analyze various kinds of motion.
{"title":"Exploring shot noise and Laser Doppler imagery with Heterodyne Holography","authors":"M. Gross, F. Verpillat, F. Joud, M. Atlan","doi":"10.1109/WIO.2010.5582524","DOIUrl":"https://doi.org/10.1109/WIO.2010.5582524","url":null,"abstract":"Heterodyne Holography is a variant of Digital Holography, where the optical frequencies of signal and reference arms can be freely adjusted by acousto-optic modulators. Heterodyne Holography is an extremely versatile and reliable holographic technique, which is able the reach the shot noise limit in sensitivity at very low levels of signal. Frequency tuning enables Heterodyne Holography to become a Laser Doppler imaging technique that is able to analyze various kinds of motion.","PeriodicalId":201478,"journal":{"name":"2010 9th Euro-American Workshop on Information Optics","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132681625","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}
Pub Date : 2010-07-12DOI: 10.1109/WIO.2010.5582523
J. Petruccelli, Nicole J. Moore, M. Alonso
Two techniques for describing the propagation of monochromatic and quasi-monochromatic nonparaxial fields, particularly focused ones, are presented in this talk. The first is based on a nonparaxial generalization of the Wigner function, while the second is based on the definition of a complete orthonormal basis of fields that are closed form solutions of Maxwell's equations and can be regarded as nonparaxial generalizations of Laguerre-Gaussian beams.
{"title":"Methods for modeling nonparaxial fields","authors":"J. Petruccelli, Nicole J. Moore, M. Alonso","doi":"10.1109/WIO.2010.5582523","DOIUrl":"https://doi.org/10.1109/WIO.2010.5582523","url":null,"abstract":"Two techniques for describing the propagation of monochromatic and quasi-monochromatic nonparaxial fields, particularly focused ones, are presented in this talk. The first is based on a nonparaxial generalization of the Wigner function, while the second is based on the definition of a complete orthonormal basis of fields that are closed form solutions of Maxwell's equations and can be regarded as nonparaxial generalizations of Laguerre-Gaussian beams.","PeriodicalId":201478,"journal":{"name":"2010 9th Euro-American Workshop on Information Optics","volume":"9 6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134094818","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}
Pub Date : 2010-07-12DOI: 10.1109/WIO.2010.5582494
R. Nasanen, T. Colomb, Y. Emery, T. Naughton
We investigated the question of how the perception of 3D information of digital holograms reconstructed numerically and presented on conventional displays depends on motion and stereoscopic presentation. Perceived depth in an adjustable random pattern stereogram was matched to the depth in holographic objects. The objects in holograms were a microscopic biological cell and a macroscopic coil. Stereoscopic presentation increased perceived depth substantially in comparison to non-stereoscopic presentation. When stereoscopic cues were weak or absent e.g. because of blur, motion increased perceived depth considerably. However, when stereoscopic cues were strong, the effect of motion was small. In conclusion, for the maximisation of perceived 3D information of holograms on conventional displays, it seems highly beneficial to use the combination of motion and stereoscopic presentation.
{"title":"3D perception of numerical hologram reconstructions enhanced by motion and stereo","authors":"R. Nasanen, T. Colomb, Y. Emery, T. Naughton","doi":"10.1109/WIO.2010.5582494","DOIUrl":"https://doi.org/10.1109/WIO.2010.5582494","url":null,"abstract":"We investigated the question of how the perception of 3D information of digital holograms reconstructed numerically and presented on conventional displays depends on motion and stereoscopic presentation. Perceived depth in an adjustable random pattern stereogram was matched to the depth in holographic objects. The objects in holograms were a microscopic biological cell and a macroscopic coil. Stereoscopic presentation increased perceived depth substantially in comparison to non-stereoscopic presentation. When stereoscopic cues were weak or absent e.g. because of blur, motion increased perceived depth considerably. However, when stereoscopic cues were strong, the effect of motion was small. In conclusion, for the maximisation of perceived 3D information of holograms on conventional displays, it seems highly beneficial to use the combination of motion and stereoscopic presentation.","PeriodicalId":201478,"journal":{"name":"2010 9th Euro-American Workshop on Information Optics","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124673074","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}
Pub Date : 2010-07-12DOI: 10.1109/WIO.2010.5582492
A. Ushenko, Y. Ushenko, Y. Tomka, O. Dubolazov, O. Y. Telenga, V. Istratiy, A. O. Karachevtcev
The paper deals with investigating the processes of laser radiation transformation by biological crystals networks using the singular optics techniques. The results obtained showed a distinct correlation between the points of “characteristic” values of coordinate distributions of Mueller matrix (Mik = 0, ±1 ) elements and polarization singularities (L- and C-points) of laser scattering field.
{"title":"The interconnection between the coordinate distribution of Mueller-matrixes images characteristics values of biological liquid crystals net and the pathological changes of human tissues","authors":"A. Ushenko, Y. Ushenko, Y. Tomka, O. Dubolazov, O. Y. Telenga, V. Istratiy, A. O. Karachevtcev","doi":"10.1109/WIO.2010.5582492","DOIUrl":"https://doi.org/10.1109/WIO.2010.5582492","url":null,"abstract":"The paper deals with investigating the processes of laser radiation transformation by biological crystals networks using the singular optics techniques. The results obtained showed a distinct correlation between the points of “characteristic” values of coordinate distributions of Mueller matrix (Mik = 0, ±1 ) elements and polarization singularities (L- and C-points) of laser scattering field.","PeriodicalId":201478,"journal":{"name":"2010 9th Euro-American Workshop on Information Optics","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127670868","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}
Pub Date : 2010-07-12DOI: 10.1109/WIO.2010.5582498
A. Kravchenko, R. Khakimov, A. Shevchenko, A. Priimagi, M. Kaivola, V. Ovchinnikov
This work is focused on the design and fabrication of plasmonic nanostructures for spectroscopic applications. Our goal is to fabricate large-surface-area plasmonic nanostructures that provide local enhancement of electromagnetic fields for applications in fluorescence and Raman scattering spectroscopy. Periodic two-dimensional arrays of nanogrooves and nanopillars are obtained by holographic photolithography that makes use of surface relief gratings on azo-polymer films. Numerical calculations are performed to optimize the geometrical and material parameters of the structures in order to maximize the field enhancement factor.
{"title":"Design and fabrication of plasmonic nanostructures for spectroscopic applications","authors":"A. Kravchenko, R. Khakimov, A. Shevchenko, A. Priimagi, M. Kaivola, V. Ovchinnikov","doi":"10.1109/WIO.2010.5582498","DOIUrl":"https://doi.org/10.1109/WIO.2010.5582498","url":null,"abstract":"This work is focused on the design and fabrication of plasmonic nanostructures for spectroscopic applications. Our goal is to fabricate large-surface-area plasmonic nanostructures that provide local enhancement of electromagnetic fields for applications in fluorescence and Raman scattering spectroscopy. Periodic two-dimensional arrays of nanogrooves and nanopillars are obtained by holographic photolithography that makes use of surface relief gratings on azo-polymer films. Numerical calculations are performed to optimize the geometrical and material parameters of the structures in order to maximize the field enhancement factor.","PeriodicalId":201478,"journal":{"name":"2010 9th Euro-American Workshop on Information Optics","volume":"81 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121568390","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}
Pub Date : 2010-07-12DOI: 10.1109/WIO.2010.5582486
J. Antila
VTT has developed new MEMS based spectrometer technologies to meet various spectral sensing demands from UV to thermal IR. New inventions have been made to cover wavelength ranges from 350 nm up to 14 µm and to enlarge apertures of devices for increased throughput. This paper reviews VTT's surface micromachined Fabry-Perot interferometer technologies, highlights their key parameters and describes the related instrumentation.
{"title":"Miniaturized spectrometer technologies","authors":"J. Antila","doi":"10.1109/WIO.2010.5582486","DOIUrl":"https://doi.org/10.1109/WIO.2010.5582486","url":null,"abstract":"VTT has developed new MEMS based spectrometer technologies to meet various spectral sensing demands from UV to thermal IR. New inventions have been made to cover wavelength ranges from 350 nm up to 14 µm and to enlarge apertures of devices for increased throughput. This paper reviews VTT's surface micromachined Fabry-Perot interferometer technologies, highlights their key parameters and describes the related instrumentation.","PeriodicalId":201478,"journal":{"name":"2010 9th Euro-American Workshop on Information Optics","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127383356","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}
Pub Date : 2010-07-12DOI: 10.1109/WIO.2010.5582527
C. Falldorf, C. von Kopylow, R. Bergmann
We provide an overview over recent applications of electronically adressed liquid crystal spatial light modulators (SLM) in the field of optical metrology. Three particular examples are considered: A shear interferometer, a setup for phase retrieval from a set of intensity measurements and a digital holographic sensor which allows for the electronic adaption of the reference wave.
{"title":"Liquid crystal spatial light modulators in optical metrology","authors":"C. Falldorf, C. von Kopylow, R. Bergmann","doi":"10.1109/WIO.2010.5582527","DOIUrl":"https://doi.org/10.1109/WIO.2010.5582527","url":null,"abstract":"We provide an overview over recent applications of electronically adressed liquid crystal spatial light modulators (SLM) in the field of optical metrology. Three particular examples are considered: A shear interferometer, a setup for phase retrieval from a set of intensity measurements and a digital holographic sensor which allows for the electronic adaption of the reference wave.","PeriodicalId":201478,"journal":{"name":"2010 9th Euro-American Workshop on Information Optics","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126571831","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}
Pub Date : 2010-07-12DOI: 10.1109/WIO.2010.5582510
A. Moradi, M. Ali, M. Daneshpanah, A. Anand, B. Javidi
This work investigates an optical trap based method for detection of structural changes of the red blood cell (RBC) membrane affected by Ca2+ ions. Individual cells are immobilized by use of optical tweezers and are monitored live while the concentration of Ca2+ ions in the buffer is changed simultaneously. Ca2+ ions affect cells' membrane morphology, which results in the change of effective radius as well as drag coefficient of the cell, both of which affect the Brownian motion of the cell in solution. This motion is measurable indirectly by tracking the forward scattering light and its dependence on size and drag coefficient of the cell. We show the relationship between Ca2+ ion concentration and optical trap specifications.
{"title":"Application of optical trapping for detection of Calcium induced morphological changes of red blood cells","authors":"A. Moradi, M. Ali, M. Daneshpanah, A. Anand, B. Javidi","doi":"10.1109/WIO.2010.5582510","DOIUrl":"https://doi.org/10.1109/WIO.2010.5582510","url":null,"abstract":"This work investigates an optical trap based method for detection of structural changes of the red blood cell (RBC) membrane affected by Ca2+ ions. Individual cells are immobilized by use of optical tweezers and are monitored live while the concentration of Ca2+ ions in the buffer is changed simultaneously. Ca2+ ions affect cells' membrane morphology, which results in the change of effective radius as well as drag coefficient of the cell, both of which affect the Brownian motion of the cell in solution. This motion is measurable indirectly by tracking the forward scattering light and its dependence on size and drag coefficient of the cell. We show the relationship between Ca2+ ion concentration and optical trap specifications.","PeriodicalId":201478,"journal":{"name":"2010 9th Euro-American Workshop on Information Optics","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129829467","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}
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