Speckle correlation imaging method and speckle correlation imaging device based on Wirtinger Flow algorithm

Abstract

The invention discloses a speckle correlation imaging method and device based on a Wirtinger Flow algorithm, and the method comprises the steps: S1, obtaining a target speckle image, and carrying outthe autocorrelation Fourier transform of the target speckle image according to the Wiener-Khinchin theorem, and obtaining a target power spectrum; and S2, establishing a cost function of the target image and the target power spectrum through a Wirtinger Flow algorithm, optimizing the cost function through an optimization algorithm, solving an optimal solution of the cost function, and reconstructing the target image according to the optimal solution. According to the method, the robustness of the target reconstruction process to measurement noise and system distortion can be improved, any prior information of the target is not needed, and the quality of the reconstructed target is improved.

Description

technical field [0001] The invention relates to the technical field of anti-scattering imaging, in particular to a speckle correlation imaging method and device based on the Wirtinger Flow algorithm. Background technique [0002] The light waves carrying target information will scatter when they pass through strong scattering media such as biological tissue, smoke, egg film, etc., so that the target information carried by the light waves will be re-encoded, and what the detector receives is a random speckle image, which cannot Identify the outlines and details of objects. [0003] Speckle correlation imaging technology is a technology developed based on the inherent optical memory effect of strong scattering media, which can perform imaging in the presence of strong scattering media on the transmission path. The optical memory effect was first proposed by Israeli scientist I. Freund et al., that is, after the light wave passes through the scattering medium, when the inciden...

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