Abstract

A two-channel incoherent spatial filtering system is generalized by considering two object transparencies, one in each of the two channels. Various special cases result, including two that have previously been described and others not previously given. The system can be either linear in irradiance (the basic incoherent case) or linear in field (the basic coherent case) even though the illumination is incoherent in either case. In particular, we show spatial filtering with the object in one channel and the spatial filter in the other channel.

© 1986 Optical Society of America

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