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. Author manuscript; available in PMC: 2020 Oct 30.
Published in final edited form as: Optica. 2019 May 10;6(5):647–661. doi: 10.1364/optica.6.000647

Fig. 10.

Fig. 10.

Resolution performance measured by imaging a Siemens star target. (a) A crude lens has optical aberration that prevents resolving the Siemens star’s features. (b) CACAO-FB is able to computationally remove the aberration and resolve 19.6 μm periodicity feature size, which lies between the coherent and incoherent resolution limit given by the focal length of 130 mm, the aperture diameter of 5.5 mm, and the illumination wavelength of 520 nm. (c) Pupil function recovered by CACAO-FB used for removing the aberration. (d) The PSF associated with the pupil function. (e) Intensity values from the circular traces on (a) and (b) that correspond to the minimum resolvable feature size of 19.6 μm periodicity. The Siemens star’s spokes are not visible in the raw image’s trace, whereas 40 cycles are clearly resolvable in the deconvolved result’s trace.