Fig. 1. Schematic of IRM system at Australian Synchrotron. Please see ref.¹² for detailed information.

Fig. 2. (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;$\otimes$: 2D convolution; $\Im$: Fourier transform; ${\Im }^{*}$: complex conjugate operation following a Fourier transform; ${\Im }^{-1}:$ inverse Fourier transform; ~: Fourier transform of a variable; Rⁿ and R⁽ⁿ⁺¹⁾: – n^th 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.