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ComputersElect. EngngVol. 23,No. 5, pp. 283-299,1997 fil~f )Pergamon (Z: 1998 Elsevier Science Ltd. All rights reserved
 

Summary: ComputersElect. EngngVol. 23,No. 5, pp. 283-299,1997
fil~f )Pergamon (Z: 1998 Elsevier Science Ltd. All rights reserved
Printedin Great Britain
P11: S0045-7906(97)00020-7 0045-7906/97 $17.00 0.00
BINARIZED COMPOSITE FILTER DESIGN USING
MAJORITY-GRANTED NONLINEARITY
FARID AHMED' and MOHAMMAD A. KARIM2
'Electrical Engineering, School of Engineering & Engineering Technology, Pennsylvania State
University, The Behrend College, Erie, PA, 16563-1701, USA and
2
University of Dayton, Center for
Electro-Optics, 300 College Park Avenue, Dayton, OH, 45469-0245. USA
Abstract-A voting scheme for the construction of composite filter for distortion-invariant optical pattern
recognition is addressed. The motivation is the limited modulation capability of the spatial light modulator
(SLM) which is incorporated as a design constraint in the form of majority-granted nonlinearity. The
technique is simple, and less computationally extensive nevertheless resulting in a robust enough
SLM-realizable distortion-invariant correlator. Simulation results are presented for rotation invariant
character recognition, which shows better correlation discrimination and robust recognition for threshold
detectors. id 1997 Elsevier Science Ltd.
Kesvsords: Distortion-invariance, composite filter, pattern recognition, majority-granted nonlinearity,

  

Source: Ahmed, Farid - Department of Electrical Engineering and Computer Science, Catholic University of America

 

Collections: Engineering