OSA Imaging and Applied Optics Congress 2021 (3D, COSI, DH, ISA, pcAOP)最新文献

{"title":"Color-multi-view holographic tomography with a single monochromatic sensor","authors":"S. Hassad, K. Ferria, L. Bouamama, P. Picart","doi":"10.1364/dh.2021.dm6e.3","DOIUrl":"https://doi.org/10.1364/dh.2021.dm6e.3","url":null,"abstract":"","PeriodicalId":19628,"journal":{"name":"OSA Imaging and Applied Optics Congress 2021 (3D, COSI, DH, ISA, pcAOP)","volume":"36 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79129388","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":"Blood flow visualization of the image-guided laparoscopic surgical tool (IGLaST) using OCT speckle decorrelation","authors":"Minsuk Lee, Seungrag Lee, H. Bang, Eungjang Lee, Byungjun Park, H. Yoo","doi":"10.1364/isa.2021.itu7a.2","DOIUrl":"https://doi.org/10.1364/isa.2021.itu7a.2","url":null,"abstract":"","PeriodicalId":19628,"journal":{"name":"OSA Imaging and Applied Optics Congress 2021 (3D, COSI, DH, ISA, pcAOP)","volume":"41 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91252606","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":"Alpha Emitter Detection Systems Using UV light Detector","authors":"N. Kume, K. Okazaki, T. Hoshi, N. Sakamoto, A. Sumita, Y. Miyahara, J. Takagi","doi":"10.1364/dh.2021.dth5f.5","DOIUrl":"https://doi.org/10.1364/dh.2021.dth5f.5","url":null,"abstract":"","PeriodicalId":19628,"journal":{"name":"OSA Imaging and Applied Optics Congress 2021 (3D, COSI, DH, ISA, pcAOP)","volume":"106 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88023545","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":"Effect of Atmospheric Aerosols on the Performance of Free-Space Optical Communication Systems in Turbulent Medium","authors":"K. Sunilkumar, N. Anand, S. Satheesh, K. Moorthy, G. Ilavazhagan","doi":"10.1364/pcaop.2021.ptu2g.2","DOIUrl":"https://doi.org/10.1364/pcaop.2021.ptu2g.2","url":null,"abstract":"","PeriodicalId":19628,"journal":{"name":"OSA Imaging and Applied Optics Congress 2021 (3D, COSI, DH, ISA, pcAOP)","volume":"58 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91230342","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":"Space-time optical imaging framework: Holographic particle tracking velocimetry","authors":"N. Chen, Congli Wang, W. Heidrich","doi":"10.1364/dh.2021.dw4b.4","DOIUrl":"https://doi.org/10.1364/dh.2021.dw4b.4","url":null,"abstract":"We present a joint optimization framework for four-dimensional (4D) optical imaging: volumes and movements are reconstructed jointly in a higher space-time dimension, enabling faster convergence and better reconstruction quality of both the volumes and movements within a few minutes on modern GPUs. We verified the framework on digital holographic particle tracking velocimetry, a typical 4D optical imaging example. Experimental results are presented to show the efficiency of the proposed technique. © 2021 The Author(s) 1. Theory The temporal evolution of a volume o defines an apparent movement of the volume, known as fluid velocities. Motion flows can be numerically reconstructed from consecutive, rapid measurements of changing particle volumes. Under the assumption of incompressibility, i.e., divergence-free flow, the motion flow vt ∈ R3 relates temporally neighboring particle volumes from time t to t +1 [1]. That is, with x = (r,z): ot(x+vt)≈ ot+1(x), (1) where subscripts (t and t + 1) denote for two neighboring time frames. Given a sequence of indexed 2D images bt(r) of t = 1,2, · · · ,T , at each frame t, we would like to recover simultaneously its volume ot(x) and the associated 3D flow vector vt(x). By taking into consideration of the temporal coherence between neighboring frames, we jointly estimate volumes and fluid flows and this strategy optimizes for neighboring frames together, and hence closing the numerical reconstruction loop. These yield the following optimization problem: min o,v T ∑ t=1 ‖Aot −bt‖2 + τ T−1 ∑ t=1 ‖ot+1(x)−ot(x+vt)‖2 +priors(o)+priors(v), (2) where priors(v) may represent the smoothness and incompressible property [1,2] of the flow, and priors(o) represents the property of the volumes, usually is sparsity. Specifically, Eq. (2) is solved by alternating between solving particle volume o and solving volumetric movement flow v, as in Algorithm 1: min o T ∑ t=1 ‖Aot −bt‖2 + τ T−1 ∑ t=1 ‖ot+1(x)−ot(x+vt)‖2 +priors(o), min v τ T−1 ∑ t=1 ‖ot+1(x)−ot(x+vt)‖2 +priors(v). (3) Algorithm 1 Holo-Flow solver for Eq. (3). function RECONSTRUCT VOLUME AND FLOW(b1,b2, · · · ,bT ) Initialize o0 and v0; while not converge do . Alternating loop ok+1← argmin o T ∑ t=1 ‖Aot −bt‖2 +λ T−1 ∑ t=1 ‖ot+1(x)−ot(x+v t )‖2 +priors(o); . o-solver: volume [3] vk+1← argmin v λ T−1 ∑ t=1 ‖ok t+1(x)−o k t (x+vt)‖2 +priors(v); . v-solver: 3D optical flow [4] return oK and vK ; . At final iteration K In Eq. (2) and Eq. (3), A can be an optical system of holography or light field microscopy, where bt(r) are holograms or light field images. We take the holographic particle tracking velocimetry (HPTV) as an example. Specifically, we solve particles using FASTA iterative shrinkage algorithm [3], and solve flow using standard HornSchunck optical flow [4]. In the following, we evaluate our proposed approach on HPTV based on experimental hologram data. 2. Verification of the proposed technique with holographic PTV tank with moving particles laser diode CCD (a) ","PeriodicalId":19628,"journal":{"name":"OSA Imaging and Applied Optics Congress 2021 (3D, COSI, DH, ISA, pcAOP)","volume":"24 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77797569","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":"Hologram Reconstruction using cascaded deep learning networks","authors":"Hyon‐Gon Choo, Yeon-Gyeong Ju, Kwan‐Jung Oh, Yongjun Lim, Jae-Hyeung Park","doi":"10.1364/dh.2021.df4c.3","DOIUrl":"https://doi.org/10.1364/dh.2021.df4c.3","url":null,"abstract":"","PeriodicalId":19628,"journal":{"name":"OSA Imaging and Applied Optics Congress 2021 (3D, COSI, DH, ISA, pcAOP)","volume":"255 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78224038","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":"Multi-Spectral Reflectance And Shape Reconstruction Using A Concentric Light Field","authors":"Yuqi Ding, Mingyuan Zhou, Yu Ji, Jingyi Yu, S. Young, Jinwei Ye","doi":"10.1364/isa.2021.iw6d.7","DOIUrl":"https://doi.org/10.1364/isa.2021.iw6d.7","url":null,"abstract":"","PeriodicalId":19628,"journal":{"name":"OSA Imaging and Applied Optics Congress 2021 (3D, COSI, DH, ISA, pcAOP)","volume":"19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84518865","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":"Towards Objective Corneal Transparency Assessment in the Clinical Setting: Correction of Acquisition Artifacts in Spectral-domain OCT Images","authors":"Maëlle Vilbert, Romain Bocheux, Hugo Lama, C. Georgeon, V. Borderie, P. Pernot, K. Irsch, K. Plamann","doi":"10.1364/isa.2021.itu1d.5","DOIUrl":"https://doi.org/10.1364/isa.2021.itu1d.5","url":null,"abstract":"","PeriodicalId":19628,"journal":{"name":"OSA Imaging and Applied Optics Congress 2021 (3D, COSI, DH, ISA, pcAOP)","volume":"86 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85601554","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":"Object Classification in Photon-Starved Conditions using 3D Integral Imaging: Performance Comparison Between Visible and Longwave Infrared Imaging","authors":"P. Wani, K. Usmani, G. Krishnan, T. O’Connor, B. Javidi","doi":"10.1364/3d.2021.3th4d.3","DOIUrl":"https://doi.org/10.1364/3d.2021.3th4d.3","url":null,"abstract":"","PeriodicalId":19628,"journal":{"name":"OSA Imaging and Applied Optics Congress 2021 (3D, COSI, DH, ISA, pcAOP)","volume":"21 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85659771","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":"Joule-Class Ultrafast Thin-Disk Laser Amplifiers for Applications in Atmospheric Research","authors":"C. Herkommer, P. Krötz, S. Klingebiel, R. Kienberger, Thoms Metzger","doi":"10.1364/pcaop.2021.pth2e.2","DOIUrl":"https://doi.org/10.1364/pcaop.2021.pth2e.2","url":null,"abstract":"","PeriodicalId":19628,"journal":{"name":"OSA Imaging and Applied Optics Congress 2021 (3D, COSI, DH, ISA, pcAOP)","volume":"66 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85798900","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}