A technique to eliminate the lateral dispersion in the correlation signal from a holographic Vander Lugt filter is described. Both spatially coherent, and spatially noncoherent, object illumination are considered; and expressions for the color-corrected correlation intensity are written in each case. Experimental results of the correlation plane intensity are shown using laser and spatially noncoherent white-light illumination. The latter is seen to be useful to search automatically for object scale.
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Morris et al. (1980) studied this question.
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