Dr. Nazrul Islam of ODU, Video Pattern Recognition

Thursday, 20 March 2008 at 6:30 PM
Aberdeen Barn, Virginia Beach

Automatic identification of a specific object or pattern in an arbitrary input scene is an important part of any authorization, monitoring and security system. Pattern recognition is always a challenging issue because the targets are often non-cooperative, the scene may contain noise and distortions due to variable environmental conditions during recording the image. Additional requirements for an efficient pattern recognition system are that the architecture should be simple so that it can easily be implemented and be user friendly, and it should perform fast enough to make instantaneous decision on the presence of a target in the input scene. Optical joint transform correlation (JTC) technique has been found to be a versatile tool for real-time pattern recognition applications, which employs optical devices, like lens, spatial light modulator, for parallel processing of the given images. The JTC scheme provides a number of advantages over other correlation techniques, like Vanderlugt filter, in that it allows real-time updating of the reference image, permits parallel Fourier transformation of the reference image and input scene, operates at video frame rates and eliminates the precise positioning requirement of a complex matched filter in the Fourier plane. Several modifications have been proposed to improve the correlation performance of the JTC technique, namely binary JTC, phase-only JTC, fringe-adjusted JTC and shifted phase-encoded fringe-adjusted JTC. This presentation will review the features, problems and prospects of optical pattern recognition techniques.

Biographical Sketch: Dr. M. Nazrul Islam is a Research Scientist at Old Dominion University Research Foundation. He received the Bachelor of Science and Master of Science in Electrical and Electronic Engineering from Bangladesh University of Engineering and Technology in 1991 and 1994, respectively. He then earned his PhD degree from Muroran Institute of Technology, Japan in 1999. Dr. Islam joined the Electrical and Electronic Engineering Department of Bangladesh University of Engineering and Technology in 1991 where he is now an Associate Professor (on leave). Prior to joining Old Dominion University, Dr. Islam worked as a Postdoctoral Research Fellow at the University of South Alabama and as a Visiting Assistant Professor at the University of West Florida. He authored and co-authored around 100 publications in refereed journals and conference proceedings. Dr. Islam supervised a number of graduate and undergraduate research works. He has been serving as a Reviewer for a number of well-know journals including Applied Optics, Optical Engineering, IEEE Photonics Technology Letters. He is a Senior Member of the IEEE and a Member of SPIE.

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