Effect of disjoint illumination in optimal correlation filters with obscured inputs

Autor: Khoury, J., Gianino, Peter D., Woods, Charles L.
Zdroj: Optical Engineering; January 2002, Vol. 41 Issue: 1 p118-125, 8p
Abstrakt: We evaluate the target recognition performance of five optimal filter correlators for targets that are partially obscured by a disjoint background pattern of constant illumination. The optimal filters are based on cascading a matched filter with a correction filter to optimize a selected metric. In the two correlators with superior performance, the correction filter includes a term that correlates a phase extracted portion of the template with a phase extracted portion of the input signal. We also propose a restriction on these optimized correction filters, which preserves the conventional sense of template matching. © 2002 Society of Photo-Optical Instrumentation Engineers.
Databáze: Supplemental Index