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武漢光電論壇第158期: 從二維至三維互相關:光學方法與性能評估

來源:武漢光電國家研究中心    作者:    發布時間:2019年05月24日    浏覽:402次

武漢光電論壇第158期


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報告題目:從二維至三維互相關:光學方法與性能評估

Taking Correlation from 2D to 3D: Optical Methods and Performance Evaluation



時     間:2019年5月30日15:00-17:00

地     點:武漢光電國家研究中心A101

報 告 人:Prof. Partha P. Banerjee,美國戴頓大學

邀 請 人:付  玲  教授

 

報告人簡介:

Partha P. Banerjee, 美國戴頓大學光電系現任系主任、教授。2000-2005年,曾任戴頓大學電子與計算機工程系系主任。在戴頓大學任職之前,1991-2000年,他任職于阿拉巴馬大學漢茨維爾分校,1984-1991年任職于雪城大學。研究領域主要包括:數字與動态全息成像,光緻折射材料,光學超材料,非線性光學,以及光學捕捉。Banerjee教授為美國光學學會(OSA)會士、國際光學工程學會(SPIE)會士、物理學會(FInstP)會士、電氣與電子工程師協會高級會員。他曾于1987年獲得美國國家科學基金會青年學者獎。在戴頓大學,他建立了全息成像與超材料實驗室(HAM)。他分别于2010、2016、2019年組織了關于數字全息成像的OSA國際會議,并于2012-2016擔任Applied Optics專題編輯。2014-2016年,他曾任OSA環境監測委員會主席。迄今為止,Banerjee教授已出版5本專著,超過135篇期刊論文,超過150篇/場會議論文/報告,以及一項專利。他已指導24位博士與16名碩士獲得學位。他還積極參與了華中科技大學工程科學學院、光電學院的國際合作交流,建立了學生交換、人才培養的新項目。


Biography:

Partha P. Banerjee is Professor and Chair of the Department of Electro-Optics and Photonics (EOP) at the University of Dayton (UD), and Professor of Electrical and Computer Engineering (ECE) where he was Chair from 2000-2005.  Prior to UD, he was with the University of Alabama in Huntsville from 1991-2000, and with Syracuse University from 1984-1991.  His research interests include digital and dynamic holography, photorefractives, optical metamaterials, nonlinear optics, and optical trapping.  He is Fellow of Optical Society of America (OSA), International Society of Photonics Engineers (SPIE) and the Institute of Physics (FInstP), and senior member of Institute of Electrical and Electronic Engineers (IEEE).  He received the NSF Young Investigator Award in 1987.

At UD, Dr. Banerjee established the Holography and Metamaterials (HaM) lab.  He has organized the OSA international meeting on Digital Holography in 2010, 2016 and 2019, and was Topical Editor for Applied Optics from 2012-2016. He was also Chair of the OSA Environmental Monitoring Committee from 2014-2016.  To date, Dr. Banerjee has published 5 textbooks, over 135 refereed journal papers, and over 150 conference papers/ presentations, and holds 1 patent.  He has supervised 24 PhD dissertations and 16 MS theses. He also actively participated in the international cooperation of the School of Engineering Sciences (SES) and the School of Optical and Electronic Information (SOEI) of Huazhong University of Science and Technology (HUST), and established new programs for student exchange and talent cultivation.


報告摘要:

報告首先将回顧利用光緻折射材料的二維互相關。基于光緻折射光束耦合的聯合變換相關器,其性能将通過品質參數(例如:差别比、峰-相關能量平面比、峰-噪聲比等)對光緻折射增益參數、典型參考光的光束比以及信号圖像的依賴來決定。此外,三維圖像的互相關将通過它們的二維數字全息的互相關引入。用來評估二維圖像互相關的重要品質參數将應用于全息圖的互相關。品質參數将通過作為二維圖像的數字記錄全息圖以應用于物體高度的鑒定。基于獲得的結果以及對應的品質參數作為評估标準,結果展示了對物體表面高度精确識别的前景。


Abstract: 

Correlation of two dimensional (2D) images using photorefractive materials are first reviewed.  The performance of a joint transform correlator based on photorefractive beam coupling is analyzed by determining the dependence of typical figures of merit such as the discrimination ratio, peak-to-correlation plane energy ratio, peak-to-noise ratio, etc. on the photorefractive gain coefficient and beam power ratio using typical reference and signal images.  Furthermore, correlation of three dimensional (3D) images is introduced as the correlation of their 2D digital holograms.  Critical figures of merit used for assessment of 2D correlation of images are applied to the correlation of holograms.  Figures of merit are applied for object height identification using digitally recorded holograms as the 2D images. Results show  the potential for accurate object height recognition based on obtained results corresponding to figures of merit as an assessment metric.



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