Single frame memory-effect based bispectral analysis for high-resolution imaging through scattering media

Imaging through scattering media remains a formidable challenge in optical imaging.Exploiting the memory effect presents new opportunities for non-invasive imaging through the scattering medium by leveraging speckle correlations.Traditional speckle correlation imaging often utilizes a random phase as the initial phase, leading to challenges such as convergence to incorrect local minima and the inability to resolve ambiguities in object orientation.Here, a novel method for high-quality reconstruction of single-shot scattering imaging is proposed.By employing the initial phase obtained from bispectral analysis in the subsequent phase retrieval algorithm, the convergence and accuracy of the reconstruction process are notably improved.Furthermore, a robust search technique based on an image clarity evaluation function successfully determines the optimal reconstruction size.The study demonstrates that the proposed method can obtain high-quality reconstructed images compared with the existing scattering imaging approaches.This innovative approach to non-invasive single-shot imaging through strongly scattering media shows potential for applications in scenarios involving moving objects or dynamic scattering imaging scenes.