28 November 2011 Comparison and analysis on the methods of improving the image quality in digital hologram reconstruction
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Frequency filtering, high pass filtering pro-process method, Laplace differential template, finite impulse response filtering, and wavelet transform have been proposed for eliminating zero-order diffraction in digital hologram reconstruction. The characteristics and limitations of these methods are summed up in this paper after systematically analyzing those. Furthermore, through comparing the quality of reconstructed images with or without a mean filter, it shows that the contrast and resolution have significantly been enhanced with mean filter. Finally, an effective method of improving the quality of reconstructed image, which combines wavelet transform with mean filter, is presented by contrasting and analyzing the experiment results.
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Jiansu Li, Jiansu Li, Zhao Wang, Zhao Wang, Jianmin Gao, Jianmin Gao, } "Comparison and analysis on the methods of improving the image quality in digital hologram reconstruction", Proc. SPIE 8202, 2011 International Conference on Optical Instruments and Technology: Solid State Lighting and Display Technologies, Holography, Speckle Pattern Interferometry, and Micro/Nano Manufacturing and Metrology, 820205 (28 November 2011); doi: 10.1117/12.906663; https://doi.org/10.1117/12.906663


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