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Image restoration method for longitudinal laser tomography based on degradation matrix estimation

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Abstract

Target images captured by longitudinal laser tomography are usually degraded by nonuniform laser beams transmitting through inhomogeneous scattering mediums. An image restoration method with a total variation model is proposed for eliminating the main influence of inhomogeneous scattering mediums from degraded target images. Based on the physical signal relevance between the target layer and the scattering medium layer, the degradation matrix of the target image is approximately estimated by the specified backscattering images of the scattering mediums. Simulations and experiments are performed to verify the validity and feasibility of the proposed method, and all the results demonstrate that the proposed model works well and helps us to achieve the real target images, which represent the reflectivity distributions of the targets standing behind the inhomogeneous scattering mediums and which will benefit target recognition and identification.

© 2016 Optical Society of America

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