In multiobject pattern recognition the height of the correlation peaks should be controlled when the power spectrum of a joint transform correlator is binarized. In this paper a method to predetermine the value of detection peaks is demonstrated. The technique is based on a frequency-variant threshold in order to remove the intraclass terms and on a suitable factor to normalize the binary joint power spectrum. Digital simulations and experimental hybrid implementation of this method were carried out.
© 1994 Optical Society of America
Original Manuscript: July 6, 1993
Revised Manuscript: September 27, 1993
Published: May 10, 1994
Arturo Carnicer, Santiago Vallmitjana, Ignacio Juvells, and J. R. de F. Moneo, "Controlled-intensity detection peaks in a binary joint transform correlator," Appl. Opt. 33, 3070-3075 (1994)