Binary hologram generation based on discrete wavelet transform

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• 作者：Wen-Bo Cao^a ; ^{chrisbobo@163.com" class="auth_mail" title="E-mail the corresponding author} ; Jian-She Ma^b ; Ping Su^b ; Xian-Ting Liang^a
• 关键词：Computer generated hologram ; Hologram binarization ; Discrete wavelet transform
• 刊名：Optik - International Journal for Light and Electron Optics
• 出版年：2016
• 出版时间：January 2016
• 年：2016
• 卷：127
• 期：2
• 页码：558-561
• 全文大小：755 K

文摘

In this paper, we propose a novel non-iterative approach based on the two-dimensional discrete wavelet transform (DWT) for generating binary holograms in in-line holography. This method is able to alleviate the degradation appearance on the reconstructed image caused by the direct sign-thresholding. Numerical experiments of this method are given in this paper. It is shown that high-quality images of the binary hologram can be reconstructed by using the proposed method. Additionally, the reconstructed images also contain less amount of noise contamination.