Abstract
Imaging through scattering media is challenging especially for three-dimensional scenarios. A lot of efforts have been made, but they suffer from tedious point spread function acquisition process or limited depth of field (DOF). In this Letter, a DOF extended scattering imaging method is proposed based on light field estimation. Using speckle intensities captured at two depths as constraints, a fast wavefront recovery model is proposed to estimate the phases with low computational complexity. Secondary propagation of the recovered wavefront is performed to generate the speckle intensity patterns at the target depths, and they are utilized to deconvolute integrated intensity matrices for extending imaging DOF. The effectiveness of the proposed method is demonstrated by both simulated and real experiments.
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