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Search Publications by: Patrick J. Grother (Fed)

Displaying 151 - 175 of 193

Distortion-Tolerant Filter for Elastic-Distorted Fingerprint Matching

March 1, 2000

Author(s)

Craig I. Watson, Patrick J. Grother, D P. Casasent

This paper gives results for using distortion tolerant filters to improve performance of fingerprint correlation matching. Three types of distortion tolerant filters were tested: summation, weighted, and MINACE. A set of 55 fingers were used from NIST

Performance of Electrically Addressed Spatial Light Modulators

March 3, 1999

Author(s)

Patrick Grother, M L. Hsieh, Craig I. Watson

We address two important performance limitations of commonly available spatial light modulations. First we present a method for the determination of modulation transfer function and amplitude modulation from CCD captures of imaged gratings. Second, we

Composite Filter for VanderLugt Correlator

February 4, 1999

Author(s)

Craig I. Watson, Charles L. Wilson, E G. Paek, Patrick J. Grother

This paper will examines the use of composite filters for improving the effectiveness of a Vanderlugt correlator when used for fingerprint identification. A digital simulation, which accounts for noise sources in the optical setup, is used to design and