26 September 2013 Wavelet coding of off-axis holographic images
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Publisher’s Note: This paper, originally published on 9/26/2013, was replaced with a corrected/revised version on 7/9/2014. If you downloaded the original PDF but are unable to access the revision, please contact SPIE Digital Library Customer Service for assistance. Significant research efforts have been invested in attempting to reliably capture and visualize holograms since their inception in 1962. However, less attention has been given to the efficient digital representation of the recorded holograms, which differ considerably from digitally recorded photographs. This paper examines the properties of recorded off-axis holograms and attempts to find a suitable sparse representation for holographic data. Results show significantly improved Bjøntegaard delta PSNR of over 4.5 dB on average within a bit-rate range of 0.125 to 2 bpp when combining the direction-adaptive discrete wavelet transform with non-standard decomposition schemes for off-axis holographic recordings; up to 7.5% reduction of file size has been achieved in the lossless case.
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David Blinder, David Blinder, Tim Bruylants, Tim Bruylants, Erik Stijns, Erik Stijns, Heidi Ottevaere, Heidi Ottevaere, Peter Schelkens, Peter Schelkens, "Wavelet coding of off-axis holographic images", Proc. SPIE 8856, Applications of Digital Image Processing XXXVI, 88561L (26 September 2013); doi: 10.1117/12.2027114; https://doi.org/10.1117/12.2027114

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