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Non-invasive single-shot recovery of point-spread function of a memory effect based scattering imaging system

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Document pages: 4 pages

Abstract: Accessing the point-spread function (PSF) of a complex optical system isimportant for a variety of imaging applications. However, placing an invasivepoint source is often impractical, and estimating it blindly with multipleframes is slow and requires a complex non-linear optimization. Here, weintroduce a simple single-shot method to non-invasively recover the accuratePSF of an isoplanatic imaging system, in the context of multiple lightscattering. Our approach is based on the reconstruction of any unknown sparsehidden object using the autocorrelation imaging technique, followed by adeconvolution with a blur kernel derived from the statistics of a specklepattern. A deconvolution on the camera image then retrieves the accurate PSF ofthe system, enabling further imaging applications. We demonstrate numericallyand experimentally the effectiveness of this approach compared to previousdeconvolution techniques.

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