https://scholars.lib.ntu.edu.tw/handle/123456789/607093
標題: | Reducing Defocused-Information Crosstalk to Multi-View Holography by Using Multichannel Encryption of Random Phase Distribution | 作者: | Chuang C.-H Chen C.-Y Chang H.-T HOANG-YAN LIN Kuo C.-F. |
關鍵字: | Computer-generated holography;Optical encryption algorithm;Reducing defocused-information crosstalk;Computer-generated holography; Optical encryption algorithm; Reducing defocused-information crosstalk | 公開日期: | 2022 | 卷: | 12 | 期: | 3 | 來源出版物: | Applied Sciences (Switzerland) | 摘要: | A new optical encryption algorithm, called the random-phase encryption algorithm, is proposed in this study. When this algorithm was applied in constructing computer-generated holograms, the out-of-focus image crosstalk was effectively reduced, and the image quality was greatly enhanced. In this study, the researchers encrypted each multi-depth or multi-view random phase sub-image with the phase-locked key to generate multi-channel encryption phase information. During the reconstruction, the switch of the phase-locked key of the sub-image was found to achieve different image reconstruction effects with different views or depths. This algorithm proved to substantially reduce the out-of-focus image crosstalk and to enhance the reconstruction quality of the original computer holography without concerning the mutual interference among the information of each view for multi-view and multi-depth holograms. ? 2022 by the authors. Licensee MDPI, Basel, Switzerland. A new optical encryption algorithm, called the random-phase encryption algorithm, is proposed in this study. When this algorithm was applied in constructing computer-generated holograms, the out-of-focus image crosstalk was effectively reduced, and the image quality was greatly enhanced. In this study, the researchers encrypted each multi-depth or multi-view random phase sub-image with the phase-locked key to generate multi-channel encryption phase information. During the reconstruction, the switch of the phase-locked key of the sub-image was found to achieve different image reconstruction effects with different views or depths. This algorithm proved to substantially reduce the out-of-focus image crosstalk and to enhance the reconstruction quality of the original computer holography without concerning the mutual interference among the information of each view for multi-view and multi-depth holograms. © 2022 by the authors. Licensee MDPI, Basel, Switzerland. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85123543048&doi=10.3390%2fapp12031413&partnerID=40&md5=86ade706f2a2cf09e25691db149ade6a https://scholars.lib.ntu.edu.tw/handle/123456789/607093 |
ISSN: | 20763417 | DOI: | 10.3390/app12031413 |
顯示於: | 電機工程學系 |
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