We compare several recently proposed filters for pattern recognition and show that they approximate more or less the optimal filter, which, however, is not so easy to implement.
© 1992 Optical Society of America
Original Manuscript: September 13, 1991
Published: April 10, 1992
L. P. Yaroslavsky, "Is the phase-only filter and its modifications optimal in terms of the discrimination capability in pattern recognition?," Appl. Opt. 31, 1677-1679 (1992)