Imaging through a thin scattering layer and jointly retrieving the point-spread-function using phase-diversity

Abstract

Recently introduced angular-memory-effect based techniques enable non-invasive imaging of objects hidden behind thin scattering layers. However, both the speckle-correlation and the bispectrum analysis are based on the statistical average of large amounts of speckle grains, which determines that they can hardly access the important information of the point-spread-function (PSF) of a highly scattering imaging system. Here, inspired by notions used in astronomy, we present a phase-diversity speckle imaging scheme, based on recording a sequence of intensity speckle patterns at various imaging planes, and experimentally demonstrate that in addition to being able to retrieve diffraction-limited image of hidden objects, phase-diversity can also simultaneously estimate the pupil function and the PSF of a highly scattering imaging system without any guide-star nor reference.

4 pages, 5 figures

References in corpus (6)

• Measuring the Transmission Matrix in Optics : An Approach to the Study and Control of Light Propagation in Disordered Media
• Non-invasive real-time imaging through scattering layers and around corners via speckle correlations
• Light fields in complex media: mesoscopic scattering meets wave control
• Measuring optical transmission matrices by wavefront shaping
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Cited by in corpus (7)

• Computational Imaging Without a Computer: Seeing Through Random Diffusers at the Speed of Light
• Wide field fluorescence epi-microscopy behind a scattering medium enabled by speckle correlations
• Imaging objects through scattering layers and around corners by retrieval of the scattered point spread function
• Imaging of objects through a thin scattering layer using a spectrally and spatially separated reference
• Quantitative phase imaging (QPI) through random diffusers using a diffractive optical network
• Non-invasive single-shot recovery of point-spread function of a memory effect based scattering imaging system
• Optical information transfer through random unknown diffusers using electronic encoding and diffractive decoding