Research on Fuzzy Image Restoration Technology Based on Digital Holography
In this paper,the image restoration mechanism of objects through scattering medium(ground glass)is studied by digital holography.Firstly,the mathematical model of digital holography for its recording and reconstruction was established based on the principle of Fresnel off-axis digital holography.Then,the holographic scattering imaging system was designed and built,the mathematical model of ground glass was established,and an algorithm to eliminate the speckle noise of ground glass was proposed.The digital hologram obtained from the experiment was reconstructed by the Fresnel reconstruction algorithm.Finally,the hologram was reconstructed after reprocessing by the spectral fil-tering method.The experimental results verify the correctness of the theoretical algorithm and the experimental meth-od,and provide help for the in-depth study of image restoration of objects passing through complex media in the fu-ture.
digital holographyscattering imagingground glassnumerical reconstruction
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