Abstract

A binary synthetic discriminant function filter was previously described that will produce a specified correlation response for a set of training images.¹ In the filter design, the modulation characteristics of the device on which the filter is mapped are included in the synthesis equations. The system of nonlinear equations is solved using an iteration procedure based on the Newton-Raphson algorithm. The development of the filter-SDF (fSDF) method was driven by the practical concern to make currently available spatial light modulators with limited modulation capabilities functional for distortion-invariant pattern recognition.

© 1989 Optical Society of America