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. Author manuscript; available in PMC: 2011 Jan 3.
Published in final edited form as: J Opt Soc Am A Opt Image Sci Vis. 2007 Dec;24(12):B99–B109. doi: 10.1364/josaa.24.000b99

Fig. 1.

Fig. 1

PSfrag replacements. Mean background f̄b with the target signal fs superimposed (a) and a profile through them (b). The largest of the search areas considered (diameter of 23 pixels) is indicated as a black circle in (a).