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Title of Journal: Microsyst Technol

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Abbravation: Microsystem Technologies

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Springer Berlin Heidelberg

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DOI

10.1007/s00775-016-1394-3

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ISSN

1432-1858

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Iterative design method for an image filter to imp

Authors: DoHyung Kim Sungbin Jeon NoCheol Park KyoungSu Park
Publish Date: 2014/06/04
Volume: 20, Issue: 8-9, Pages: 1661-1669
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Abstract

An image filter design method is proposed to improve the bit error rate BER in holographic data storage HDS In previous image restoration methods for HDS a highly precise point spread function PSF was used as the deconvolution filter so performance was strongly dependent on the accuracy of the PSF In the proposed method in contrast the image filter is designed without using PSF information due to the similar spatial frequency distributions of HDS data pages A simple iteration algorithm was developed to obtain an optimized imagefilter shape and the performance of the designed image filter was verified by both simulation and experimentation The experimental results demonstrated that the BER improved sixfold and greater than tenfold for a Nyquist factor of 11 and 12 respectively Additionally an improvement of 30  in storage density was projected using the proposed filter compared with conventional HDS systems

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