发布求助
文献互助 智能选刊 最新文献

2014 13th Workshop on Information Optics (WIO)最新文献

筛选
英文 中文
Generation of binary hologram preserving the 3D information 生成保留三维信息的二值全息图
2014 13th Workshop on Information Optics (WIO) Pub Date : 2014-07-07 DOI: 10.1109/WIO.2014.6933301
T. Leportier, Taegeun Kim, M. Park, J. Son
{"title":"Generation of binary hologram preserving the 3D information","authors":"T. Leportier, Taegeun Kim, M. Park, J. Son","doi":"10.1109/WIO.2014.6933301","DOIUrl":"https://doi.org/10.1109/WIO.2014.6933301","url":null,"abstract":"Spatial Light Modulators currently available lack of resolution to display large hologram, it is then necessary to find some technique to broaden the size of the reconstructed image. For example, time multiplexing can be use to tile several elementary holograms via a high speed scanning system. However, the best compromise to exploit the bandwidth of the SLM is to use binary data, holograms acquired from real objects must therefore be converted from gray scale to a binary format. The Direct Binary Search algorithm (DBS) is a method that has been developed to generate binary holograms, but the resulting holograms can reconstruct the objects only in a 2D plane. We propose to adapt the DBS algorithm to reconstruct holograms instead of directly reconstructing the image, our proposed method preserve therefore 3D information.","PeriodicalId":183646,"journal":{"name":"2014 13th Workshop on Information Optics (WIO)","volume":"196 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114263362","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
Miniature artificial compound eyes for optic-flow-based robotic navigation 用于光流机器人导航的微型人工复眼
2014 13th Workshop on Information Optics (WIO) Pub Date : 2014-07-07 DOI: 10.1109/WIO.2014.6933290
Ramon Pericet-Camara, Gerard Bahi-Vila, Julien Lecoeur, D. Floreano
{"title":"Miniature artificial compound eyes for optic-flow-based robotic navigation","authors":"Ramon Pericet-Camara, Gerard Bahi-Vila, Julien Lecoeur, D. Floreano","doi":"10.1109/WIO.2014.6933290","DOIUrl":"https://doi.org/10.1109/WIO.2014.6933290","url":null,"abstract":"Miniature curved artificial compound eyes (CURVACE) represent a promising tool to assist in navigation of mobile robots. In particular, they feature ideal properties for minidrones to navigate safely in indoor environments due to its panoramic field of view, high temporal resolution, on-board data processing, small size and lightweight. However, the latter limits on-board available resources significantly, including processing power. In this paper, we demonstrate optic flow extraction by means of a CURVACE prototype with on-board processing and using two different methods. First results on fast optic flow extraction with miniature artificial compound eyes are presented. On one hand, 2D optic flow is calculated on-board using a customized version of Lucas-Kanade method at 1000 optic flow vectors per second across a field of view of 180×60 degrees. As well, we demonstrate the on-board processing of 2D optic flow vectors at a rate of more than 21000 vectors per second from the full field of view as well. For this, we utilize an existing assembly language version of the I2A algorithm.","PeriodicalId":183646,"journal":{"name":"2014 13th Workshop on Information Optics (WIO)","volume":"116 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124621859","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: 7
Computational imaging with single-pixel detection: Applications in scattering media 单像素检测的计算成像:在散射介质中的应用
2014 13th Workshop on Information Optics (WIO) Pub Date : 2014-07-07 DOI: 10.1109/WIO.2014.6933296
V. Durán, E. Irles, F. Soldevila, L. Martínez-León, J. Lancis, E. Tajahuerce, P. Clemente, P. Andrés
{"title":"Computational imaging with single-pixel detection: Applications in scattering media","authors":"V. Durán, E. Irles, F. Soldevila, L. Martínez-León, J. Lancis, E. Tajahuerce, P. Clemente, P. Andrés","doi":"10.1109/WIO.2014.6933296","DOIUrl":"https://doi.org/10.1109/WIO.2014.6933296","url":null,"abstract":"We describe computational imaging techniques based on single-pixel detection providing multidimensional information of an input scene. The key element of the optical recording stage is a spatial light modulator which sequentially generates a set of intensity light patterns to sample the scene. In this way, it is possible to use single-pixel detectors to measure different optical parameters such as the light intensity, the spectral content, the polarization state, or the phase. The spatial distribution of these parameters is then computed by applying the theory of compressive sampling. In particular, in this contribution we present a new method to transmit images through scattering media. We show that single-pixel optical systems, based on compressive detection, can overcome the fundamental limitation imposed by multiple scattering. In contrast with other schemes based on the transmission matrix technique, our approach does not require any a-priori calibration process. This makes our method suitable to use with dynamic scattering. Experimental results are provided.","PeriodicalId":183646,"journal":{"name":"2014 13th Workshop on Information Optics (WIO)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123715394","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
Digital phase reconstruction via iterative solutions of transport-of-intensity equation 基于强度输运方程迭代解的数字相位重建
2014 13th Workshop on Information Optics (WIO) Pub Date : 2014-07-07 DOI: 10.1109/WIO.2014.6933300
Emmanuel Froustey, E. Bostan, Stamatios Lefkimmiatis, M. Unser
{"title":"Digital phase reconstruction via iterative solutions of transport-of-intensity equation","authors":"Emmanuel Froustey, E. Bostan, Stamatios Lefkimmiatis, M. Unser","doi":"10.1109/WIO.2014.6933300","DOIUrl":"https://doi.org/10.1109/WIO.2014.6933300","url":null,"abstract":"We develop a variational algorithm for reconstructing phase objects from a series of bright field micrographs. Our mathematical model is based on the transport-of-intensity equation (TIE), which links the phase of a complex field to the axial derivative of its intensity. To reduce reconstruction artifacts, we formulate TIE in a regularized fashion by introducing a family of penalty functionals based on the eigenvalues of the structure tensor. To solve the arising optimization problem, we propose an algorithm based on the alternating direction method of multipliers (ADMM). We apply our method on simulated data and illustrate improved performance compared to the conventional methods such as Tikhonov and total variation (TV) regularizations. We further demonstrate the applicability of the proposed approach by applying it to experimentally-acquired bright field data.","PeriodicalId":183646,"journal":{"name":"2014 13th Workshop on Information Optics (WIO)","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131630708","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: 7
Computational holography based on ray-wavefront conversion for a high quality 3D reconstruction 基于射线波前转换的高质量三维重建计算全息
2014 13th Workshop on Information Optics (WIO) Pub Date : 2014-07-07 DOI: 10.1109/WIO.2014.6933281
K. Wakunami, Y. Ichihashi, H. Sasaki, R. Oi, T. Senoh, K. Yamamoto
{"title":"Computational holography based on ray-wavefront conversion for a high quality 3D reconstruction","authors":"K. Wakunami, Y. Ichihashi, H. Sasaki, R. Oi, T. Senoh, K. Yamamoto","doi":"10.1109/WIO.2014.6933281","DOIUrl":"https://doi.org/10.1109/WIO.2014.6933281","url":null,"abstract":"Computational holography based on the mutual conversion between ray information and wavefront is introduced. By dealing with ray and wavefront domains properly in the hologram calculation process, the proposed method can be compatible both domain's advantages. In the optical experiment, some main features of proposed method; the photorealistic image reconstruction by using computer graphics technique, the correct occlusion effect by just ray overwriting process, and also the reproducibility even for the deep 3D scene at high resolution, are demonstrated by the electronic-holography system developed by NICT.","PeriodicalId":183646,"journal":{"name":"2014 13th Workshop on Information Optics (WIO)","volume":"170 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115457592","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
A variational Bayesian approximation approach via a sparsity enforcing prior in acoustic imaging 声学成像中基于稀疏性先验的变分贝叶斯近似方法
2014 13th Workshop on Information Optics (WIO) Pub Date : 2014-07-07 DOI: 10.1109/WIO.2014.6933297
Ning Chu, A. Mohammad-Djafari, N. Gac, J. Picheral
{"title":"A variational Bayesian approximation approach via a sparsity enforcing prior in acoustic imaging","authors":"Ning Chu, A. Mohammad-Djafari, N. Gac, J. Picheral","doi":"10.1109/WIO.2014.6933297","DOIUrl":"https://doi.org/10.1109/WIO.2014.6933297","url":null,"abstract":"Acoustic imaging is an advanced technique for acoustic source localization and power reconstruction from limited noisy measurements at microphone sensors. To solve this ill-posed inverse problem, the Bayesian inference methods using proper prior knowledge have been widely investigated. In this paper, we propose to use a hierarchical Variational Bayesian Approximation for the robust acoustic imaging. And we explore the Student's-t priors with heavy tails to enforce source sparsity and non-Gaussian noises, so that we can achieve the super spatial resolution and wide dynamic range of source powers. In addition, proposed approach is validated by simulations and real data from wind tunnel in automobile industry.","PeriodicalId":183646,"journal":{"name":"2014 13th Workshop on Information Optics (WIO)","volume":"357 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115851293","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
Optical technologies for space division multiplexing 空分多路复用光学技术
2014 13th Workshop on Information Optics (WIO) Pub Date : 2014-07-07 DOI: 10.1109/WIO.2014.6933294
W. Klaus, J. Sakaguchi, B. Puttnam, Y. Awaji, N. Wada
{"title":"Optical technologies for space division multiplexing","authors":"W. Klaus, J. Sakaguchi, B. Puttnam, Y. Awaji, N. Wada","doi":"10.1109/WIO.2014.6933294","DOIUrl":"https://doi.org/10.1109/WIO.2014.6933294","url":null,"abstract":"Many technological challenges have to be overcome before a cost and energy efficient fiber communication system based on space division multiplexing (SDM) can be realized. In this paper we review recent R&D efforts in developing optical components for SDM networks.","PeriodicalId":183646,"journal":{"name":"2014 13th Workshop on Information Optics (WIO)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115091021","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
Plenoptic deconvolution in turbulent scenarios 紊流情景下的全光反褶积
2014 13th Workshop on Information Optics (WIO) Pub Date : 2014-07-07 DOI: 10.1109/WIO.2014.6933286
J. Trujillo-Sevilla, J. J. Fernández-Valdivia, J. G. Marichal-Hernández, J. Rodríguez-Ramos, L. Rodríguez-Ramos, I. Mantilla
{"title":"Plenoptic deconvolution in turbulent scenarios","authors":"J. Trujillo-Sevilla, J. J. Fernández-Valdivia, J. G. Marichal-Hernández, J. Rodríguez-Ramos, L. Rodríguez-Ramos, I. Mantilla","doi":"10.1109/WIO.2014.6933286","DOIUrl":"https://doi.org/10.1109/WIO.2014.6933286","url":null,"abstract":"The deconvolution applied to plenoptic sensors has only been studied in the area of light intensity, including no treatment for the possible path changes that optical rays suffer due to the refraction index changes in the medium. Using the plenoptic sensor not only will be possible to know the wavefront phase aberration induced by atmospheric turbulence but also, using the deconvolution presented here, it will be possible to restore the spatial structure of the observed source.","PeriodicalId":183646,"journal":{"name":"2014 13th Workshop on Information Optics (WIO)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129534822","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
Switch-back method: A fast technique for hidden-surface removal in computer holography 回切法:计算机全息术中一种快速去除隐藏面技术
2014 13th Workshop on Information Optics (WIO) Pub Date : 2014-07-07 DOI: 10.1109/WIO.2014.6933293
K. Matsushima, S. Nakahara
{"title":"Switch-back method: A fast technique for hidden-surface removal in computer holography","authors":"K. Matsushima, S. Nakahara","doi":"10.1109/WIO.2014.6933293","DOIUrl":"https://doi.org/10.1109/WIO.2014.6933293","url":null,"abstract":"In this paper, a new technique for occlusion processing is proposed in computer holography. The new technique based on the silhouette method is very fast as compared with the conventional methods. This technique allows us to remove hidden-surfaces of self-occlude objects and makes it possible to reconstruct fine spatial 3D images that are comparable to that in classical holography. The performance and optical reconstruction is reported.","PeriodicalId":183646,"journal":{"name":"2014 13th Workshop on Information Optics (WIO)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130742344","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
Multi-aperture approaches to miniaturized vision systems 小型化视觉系统的多孔径方法
2014 13th Workshop on Information Optics (WIO) Pub Date : 2014-07-07 DOI: 10.1109/WIO.2014.6933288
A. Bruckner, A. Oberdorster, J. Dunkel, R. Berlich, Frank Wippermann
{"title":"Multi-aperture approaches to miniaturized vision systems","authors":"A. Bruckner, A. Oberdorster, J. Dunkel, R. Berlich, Frank Wippermann","doi":"10.1109/WIO.2014.6933288","DOIUrl":"https://doi.org/10.1109/WIO.2014.6933288","url":null,"abstract":"The miniaturization of digital imaging systems is currently reaching both physical and technological limits for conventional setups. Further ongoing miniaturization leads to a reduction the spatial resolution and the signal-to-noise ratio of the digital imaging system. Additionally, there are technological challenges which lead to extremely tight fabrication tolerances and thus represent an unacceptable cost increase for most applications. However, principles found in the smallest known vision systems in Nature demonstrate a way out of this dilemma - the compound eye. The parallel arrangement of multiple small imaging sub-systems - a so-called multi-aperture setup - enables the acquisition of a huge amount of visible information from an extended field of view although the size of the imaging system is extremely small. We demonstrate two different examples of multi-aperture imaging systems which make use of this approach in order to overcome the scaling limits.","PeriodicalId":183646,"journal":{"name":"2014 13th Workshop on Information Optics (WIO)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128537502","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
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