FIG 2 (IMAGE) Compuscript Ltd Caption . (a) Lucy–Richardson–Rosen algorithm. O: object; OH: object hologram, also used as the initial guess solution R1; PSF: point spread function; OTF: – optical transfer function; ×: element by element product; ⊗: 2D convolution; I: Fourier transform; I∗: complex conjugate operation following a Fourier transform; I−1: inverse Fourier transform; ~: Fourier transform of a variable; Rn and R(n+1): – nth and (n+1)th solutions, respectively; and ML(O): maximum likelihood solution of the object. (b) Recorded image of pinholes and (c) its reconstruction using LRRA. (d) Recorded image of silk sample and (e) its reconstruction using LRRA. Credit OEA Usage Restrictions Credit must be given to the creator. License CC BY Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.