An optoelectronic implementation of the nonlinear morphological correlation by use of a threshold-decomposition technique and a joint transform correlator architecture is presented. This nonlinear morphological correlation provides improved image detection compared with standard linear optical pattern-recognition correlation methods. It also offers a more robust detection of low-intensity images in the presence of high-intensity patterns to be rejected.
© 1998 Optical Society of America
Pasquala Garcia-Martínez, David Mas, Javier García, and Carlos Ferreira, "Nonlinear Morphological Correlation: Optoelectronic Implementation," Appl. Opt. 37, 2112-2118 (1998)