N. Blanchard, M. Doucet, M. Leclerc, Martin Otis, M. Terroux, Martin Briand, H. Spisser, L. Marchese, A. Bergeron
{"title":"Optical Design for Real-Time THz Imaging at INO","authors":"N. Blanchard, M. Doucet, M. Leclerc, Martin Otis, M. Terroux, Martin Briand, H. Spisser, L. Marchese, A. Bergeron","doi":"10.1109/WIO.2018.8643457","DOIUrl":"https://doi.org/10.1109/WIO.2018.8643457","url":null,"abstract":"Since the release of its first microbolometric camera developed for terahertz (THz) wavelengths in 2009 [1], INO has been continually working to improve the quality of its THz images. This paper presents an overview of the evolution of INO’s THz imaging system, with a particular focus on the optical elements.","PeriodicalId":430979,"journal":{"name":"2018 17th Workshop on Information Optics (WIO)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121428442","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}
R. Martínez-Herrero, D. Maluenda, I. Juvells, A. Carnicer
{"title":"Considerations on the design of diffractive optical needles","authors":"R. Martínez-Herrero, D. Maluenda, I. Juvells, A. Carnicer","doi":"10.1109/WIO.2018.8643545","DOIUrl":"https://doi.org/10.1109/WIO.2018.8643545","url":null,"abstract":"According to intensity consideration along the propagation axis, we derived mathematical conditions for a family of modulating functions able to produce needles of arbitrary length, sub-wavelength width and almost constant irradiance. These functions are derived by introducing mathematical constrains on the on-axis power content. As a result, the modulating distribution is continuous with no jumps within or at the edge of the pupil. Numerical results suggests that the proposed approach is suitable for producing high quality needles.","PeriodicalId":430979,"journal":{"name":"2018 17th Workshop on Information Optics (WIO)","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115664321","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}
{"title":"Overview of Optical Image Authentication Schemes; Double Random Phase Encoding and Photon Counting Imaging","authors":"K. Jaferzadeh, I. Moon","doi":"10.1109/WIO.2018.8643456","DOIUrl":"https://doi.org/10.1109/WIO.2018.8643456","url":null,"abstract":"Double-random-phase encoding technique (DRPE) is an optical image encryption technique which has the advantage of parallelisms with optical processing. In this study, we aim to evaluate cryptographic properties of DRPE scheme. DRPE encodes an input image into a complex-amplitude image which real and imaginary parts resemble independent stationary white noises. The encryption process can be employed by using two random phase masks as keys and two lenses in Fourier space. The original image can be decoded only when the exact keys are given. To verify the performance of the authentication of DRPE images the peak-to-correlation energy (PCE) between the reference images and the input images are computed. Further, to improve the robustness against different attacks, photon counting imaging (PCI) technique and DRPE can be integrated. PCI encrypts amplitude part of DRPE by using various numbers of photons. Experimental results demonstrate that the DRPE is highly key sensitive while the authentication verification is completely preserved. Also, results of PC-DRPE encryption technique seem to perform reasonably well in terms of security and authentication factors.","PeriodicalId":430979,"journal":{"name":"2018 17th Workshop on Information Optics (WIO)","volume":"269 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126834863","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}
{"title":"Holographic Red Blood Cell Image Analysis","authors":"I. Moon, K. Jaferzadeh","doi":"10.1109/WIO.2018.8643553","DOIUrl":"https://doi.org/10.1109/WIO.2018.8643553","url":null,"abstract":"Digital holographic microscopy (DHM) is a well-suited technique for studying red blood cell (RBC) since it is a perfect phase object. Also, DHM is a contactless and non-invasive method thus the sample can be studied without damaging the sample. In this paper, we show different analysis about RBC's quantitative phase images (QPI) provided by DHM. The parameters are related to the shape of RBC such as volume, membrane surface area, projected surface area, sphericity index, RBC's radius and sphericity coefficient. The application of studying RBC by DHM is not limited to the shape of RBC and biochemical property such as hemoglobin content can also be analyzed. The images are related to the healthy RBC sample, and after imaging, segmentation can provide us several single cells. These parameters can be helpful for red blood cell experts and hematologist.","PeriodicalId":430979,"journal":{"name":"2018 17th Workshop on Information Optics (WIO)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116818800","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}
Teruyoshi Nobukawa, Yutaro Katano, Tetsuhiko Muroi, N. Kinoshita, Norihiko Ishii
{"title":"Grating-assisted spatial phase-shifting incoherent digital holography with compressive sensing for noise reduction","authors":"Teruyoshi Nobukawa, Yutaro Katano, Tetsuhiko Muroi, N. Kinoshita, Norihiko Ishii","doi":"10.1109/WIO.2018.8643549","DOIUrl":"https://doi.org/10.1109/WIO.2018.8643549","url":null,"abstract":"We have proposed grating-assisted spatial phase-shifting incoherent digital holography for capturing holograms of dynamically moving objects. With our method, four individual self-reference holograms of a spatially incoherent light are simultaneously created on an image sensor. Thus, it is possible to detect complex amplitude distribution from a single captured image by using a phase-shifting technique. In the present study, we aim to improve the quality of reconstructed images in our method by introducing compressive sensing. To validate the effectiveness of compressive sensing in our method, a 3D image was reconstructed from detected complex amplitude distribution by enforcing the sparsity constraint on the total variation of a signal. As a result, the introduction of compressive sensing can effectively reduce noise and out-of-focus artifacts in our method.","PeriodicalId":430979,"journal":{"name":"2018 17th Workshop on Information Optics (WIO)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131281354","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}
S. Popov, A. Marinins, I. Sychugov, Max Yan, E. Vasileva, Yuanyuan Li, L. Berglund, A. Udalcovs, O. Ozolins
{"title":"Polymer photonics and nano-materials for optical communication","authors":"S. Popov, A. Marinins, I. Sychugov, Max Yan, E. Vasileva, Yuanyuan Li, L. Berglund, A. Udalcovs, O. Ozolins","doi":"10.1109/WIO.2018.8643460","DOIUrl":"https://doi.org/10.1109/WIO.2018.8643460","url":null,"abstract":"Polymer materials offer process compatibility, design flexibility, and low cost technology as a multi-functional platform for optical communication and photonics applications. Design and thermal reflowing technology of low loss polymer waveguides, as well as demonstration of transparent wood laser are presented in this paper.","PeriodicalId":430979,"journal":{"name":"2018 17th Workshop on Information Optics (WIO)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123343860","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}
{"title":"Deep Learning for Augmented Reality","authors":"Jean-François Lalonde","doi":"10.1109/WIO.2018.8643463","DOIUrl":"https://doi.org/10.1109/WIO.2018.8643463","url":null,"abstract":"Augmented reality aims to mix real-world visual content with virtual objects. Achieving realistic results involves solving challenging computer vision tasks, such as tracking real 3D objects and estimating the illumination conditions of a scene. In this short paper, we present how these two challenging tasks can be solved robustly and accurately with deep learning. In both cases, deep convolutional neural networks are trained on large amounts of data, and achieve state-of-the-art results.","PeriodicalId":430979,"journal":{"name":"2018 17th Workshop on Information Optics (WIO)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114952021","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}
D. Nam, Yang-Ho Cho, Deokyoung Kang, Kyuhwan Choi, Daekun Yoon, Du-sik Park
{"title":"Ultra-thin Camera – Compound Eye Vision Approach","authors":"D. Nam, Yang-Ho Cho, Deokyoung Kang, Kyuhwan Choi, Daekun Yoon, Du-sik Park","doi":"10.1109/WIO.2018.8643554","DOIUrl":"https://doi.org/10.1109/WIO.2018.8643554","url":null,"abstract":"In this paper we issue the camera form factor and look into the optical limitations of the conventional camera system. Our research objective is to develop a planar (very thin) form factor camera. We proposed a multi-aperture optics, which is inspired by the compound eyes of insects, and a light field mixture model that describes how the light field information is captured and mixed by a geometric relation between the sensor and the lens. We verified the feasibility of the proposed idea at the thin camera design with a total track length less than 1 mm.","PeriodicalId":430979,"journal":{"name":"2018 17th Workshop on Information Optics (WIO)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132527997","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}
{"title":"Three-Dimensional Polarization States","authors":"J. Gil, A. Norrman, T. Setälä, A. Friberg","doi":"10.1109/WIO.2018.8643552","DOIUrl":"https://doi.org/10.1109/WIO.2018.8643552","url":null,"abstract":"General polarization states associated with electric fields that fluctuate randomly in three spatial dimensions may be classified as regular and nonregular. We assess the concept of nonregularity and examine its consequences. We also discuss the electric field’s apparent dimensionality and consider random evanescent electromagnetic waves as examples.","PeriodicalId":430979,"journal":{"name":"2018 17th Workshop on Information Optics (WIO)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132323811","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}
Y. Awatsuji, T. Fukuda, Kazuki Shimizu, Tatsuya Hirakawa, K. Nishio, P. Xia, O. Matoba
{"title":"Vertical Microscope Based on Parallel Phase-Shifting Digital Holography","authors":"Y. Awatsuji, T. Fukuda, Kazuki Shimizu, Tatsuya Hirakawa, K. Nishio, P. Xia, O. Matoba","doi":"10.1109/WIO.2018.8643547","DOIUrl":"https://doi.org/10.1109/WIO.2018.8643547","url":null,"abstract":"The authors present an optical microscope based on parallel phase-shifting digital holography. The microscope was constructed on an optical breadboard standing vertical to an optical table. In this microscope, a high-speed polarization-imaging camera was employed to record four phase-shifted holograms with a single-shot exposure. This camera can record intensities of four linearly-polarized light waves contained in the incident light wave to the image sensor by every $2 times 2$ pixels. As the magnification optical system in this microscope, an afocal optical system was employed in order that the lateral and longitudinal magnifications of the optical system are independent of the depth position of an object. The microscope was designed so as to be a transmission microscope to measure three-dimensional (3D) shape or 3D behavior of transparent specimens such as live cells. Besides, the microscope was designed as an inverted microscope, in which the specimen is irradiated by the illumination light from above. The authors recorded the transparent gas blasted from the syringe, as the first demonstration for a dynamic transparent object at the rate of 1000 frames per second (fps). The transparent gas consisted of carbon dioxide and dimethyl ether. Phase delay by blasting gas flow were successfully recorded and reconstructed by the microscope. Thus, high-speed motion-picture of phase of a dynamic minute object was experimentally demonstrated by the microscope.","PeriodicalId":430979,"journal":{"name":"2018 17th Workshop on Information Optics (WIO)","volume":"144 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116372965","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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