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3-D Fingerprint Scanning by Means of Structured-Light Illumination

Dr. Daniel L. Lau
Monday, April 9, 2007
11:00AM ~ 12:15PM, Harris Center 125

Abstract


Structured light illumination refers to the process of projecting a series of striped patterns such that, when viewed from an angle by a camera, the warping of the lines can be used to construct a 3-D model of the target surface. The earliest SLI techniques were based upon sweeping a laser stripe across an object but is now performed by illuminated the entire surface simultaneously. Using SLI, we are currently developing a means of acquiring 3-D fingerprint scans as part of the National Institute of Justice's Fast-Fingerprint Capture program, which is intent on developing next generation scanning technologies for acquiring all five fingerprints of a single hand in less than 10 seconds. Current Livescan technologies can take as much as 5-10 minutes per human subject and, hence, are not useable for check-point identification. With a non-contact means of scanning, we hope to acquire all five fingerprints and the palm scan in less than 1 second.

Short Bio


Daniel Lau received his B.S. degree in Electrical Engineering from Purdue University with highest distinction in 1995 and his Ph.D. from the University of Delaware in 1999. Currently, Daniel is serving as an Assistant Professor at the University of Kentucky but has also worked as a DSP engineering at Aware, Inc. and an image and signal processing engineer at Lawrence Livermore National Laboratory. Daniel's research interests include 3-D imaging sensors, 3-D fingerprint identification, real-time bullet detection and tracking, and multispectral color acquisition and display. His published works in halftoning include the introduction of the green-noise halftoning model as well as stochastic moire. Aside from research, Daniel is also an avid ballroom dancer who has competed at the amatuer level in both the United States and Europe.

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