[OPTICAL REVIEW Vol. 3, No. 3 (1996) 177-183]

Pure Phase Correlation with Improved Discrimination Capability

Esmail AHOUZI1, Katarzyna CHALASINSKA-MACUKOW2, Juan CAMPOS1 and Maria J. YZUEL1

1Depertamento de Física, Universidad Autónoma de Barcelona, 08193 Bellaterra, Barcelona, Spain 2Institute of Geophysics, Faculty of Physics, Warsaw University, 02-093 Pasteura 7, Warsaw, Poland

(Received October 23, 1995; Accepted April 10, 1996)

Pure phase correlation with improved discrimination capability is proposed. The improvement is achieved by designing a region of support based on the discrimination capability (DC). We propose four approaches for designing this region; some of them consider the input scene in the design, while others are input scene invariant. The performances of these approaches are compared by numerical simulation. The DC is improved significantly for the multi-object scenes even when using an input scene invariant region of support design.

Key words: optical pattern recognition, pure phase correlation, discrimination capability