NONLINEAR MORPHOLOGICAL CORRELATION - OPTOELECTRONIC IMPLEMENTATION

An optoelectronic implementation of the nonlinear morphological correl ation by use of a threshold-decomposition technique and a joint transf orm 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 hi gh-intensity patterns to be rejected. (C) 1998 Optical Society of Amer ica.