Virginia TechAlmeida, S. P.Case, S. K.Dallas, W. J.2014-04-042014-04-041979-08S. P. Almeida, S. K. Case, and W. J. Dallas, "Multispectral size-averaged incoherent spatial filtering," Appl. Opt. 18, 4025-4029 (1979). doi: 10.1364/ao.18.0040250003-6935http://hdl.handle.net/10919/46939A method of 2-D size-averaged incoherent recognition filtering is described. White light input illumination is used to multiplex chromatically a continuum of inputs differing in their spatial Fourier spectral magnifications. A two-grating dichromated-gelatin lateral-dispersion compensating device is inserted to correct chromatic dispersion introduced by a computer-generated hologram filter. The resulting registered recognition patterns are added to form a single effective filter size-averaged recognition peak. Using high efficiency compensating gratings and a bleached binary hologram allow the use of a relatively low-power light source.application/pdfenIn CopyrightArticle - Refereedhttp://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-18-23-4025https://doi.org/10.1364/ao.18.004025