文章基本信息

标题：位相対称離散コサイン変換行列を用いた位相コードホログラム多重記録方式
本地全文：下载
作者：石井紀彦 ; 木下延博 ; 椎野弘崇等
期刊名称：映像情報メディア学会誌
印刷版ISSN：1342-6907
电子版ISSN：1881-6908
出版年度：2005
卷号：59
期号：12
页码：1869-1874
DOI：10.3169/itej.59.1869
出版社：The Institute of Image Information and Television Engineers
摘要：We developed a phase-code multiplexing method using discrete cosine transform. In theory, parts of a phase code must be changed because of symmetric phase conditions. We created a 3×3 phase code condition. Our method has no restriction on the pixel number in contrast with Walsh-Hadamard transform, whose pixel number is 2ⁿ. In addition, it has a faster data-transfer-rate because the distance from one phase to another is shorter than in Wlash-Hadamard. We fabricated a phase modulator using liquid crystal and measured the multiplexing recording and reproduction characteristics. We found that multiplexing images could be reproduced with some cross talk. It is important to control the phase precisely.
关键词：ホログラム;位相コード;離散コサイン変換;多重;直交変換;位相対称