Fig. 2.

Outline of CACAO-FB pipeline. (a) The captured images are broken into small tiles of isoplanatic patches (i.e., aberration is spatially invariant within each tile). (b) Data acquisition and post-processing for estimating the pupil function P_t(u, v). Limited-aperture images i_m,t(ξ, η) are captured with small masks, W_m(u, v) applied at the pupil plane. Local PSFs b_m,t(ξ, η) are determined by the blur estimation procedure, Algorithm 1. These PSFs are synthesized into the full-aperture pupil function P_t(u, v) with Fourier-ptychography-based alternating projections algorithm, Algorithm 2. (c) Data acquisition with big masks A_n(u, v) at the pupil plane. (d) The recovered P_t(u, v) from (b) and the big-aperture images ϕ_n,t(ξ, η) from (c) are used for deconvolution (Algorithm 3) to recover the latent aberration-free intensity distribution of the sample o_t(x, y).