| 一种提高数字全息再现像质量的方法 |
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| 引用本文： | 王艳萍,吕晓旭,钟丽云,罗印龙.一种提高数字全息再现像质量的方法[J].昆明理工大学学报(理工版),2005,30(1):108-110. |
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| 作者姓名： | 王艳萍 吕晓旭 钟丽云 罗印龙 |
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| 作者单位： | 昆明理工大学,理学院,云南,昆明,650093;昆明理工大学,理学院,云南,昆明,650093;昆明理工大学,理学院,云南,昆明,650093;昆明理工大学,理学院,云南,昆明,650093 |
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| 基金项目： | 云南省自然科学基金资助项目 (项目编号 :2 0 0 1F0 0 2 6M、2 0 0 2F0 0 30M ) |
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| 摘 要： | 针对数字全息中零级像和共轭像的存在影响数字再现像的质量这一问题 ,采用四步相移方法 ,对离轴数字全息图采用相加运算处理 ,能较好地去除零级像及共轭像 ,提高了信噪比 ,从而提高了再现像质量 .
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| 关 键 词： | 数字全息 离轴全息 相移 |
| 文章编号： | 1007-855X(2005)01-0108-03 |
| 修稿时间： | 2004年2月25日 |
A Method of Enhancing the Quality of Reconstructed Image in Digital Holography |
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| WANG Yan-ping,LV Xiao-xu,ZHONG Li-yun.A Method of Enhancing the Quality of Reconstructed Image in Digital Holography[J].Journal of Kunming University of Science and Technology(Natural Science Edition),2005,30(1):108-110. |
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| Authors: | WANG Yan-ping LV Xiao-xu ZHONG Li-yun |
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| Abstract: | Aiming at the question that the existence of zero-order image and conjugate image has certain effect on the quality of reconstructed images in digital holography, a method of four-step phase-shifting digital holography is presented, in which four phase-shifting off-axis digital holograms are made to add operation, and zero-order image and conjugate image are preferably eliminated. Not only is the signal-noise ratio improved, but also the quality of reconstructed images is enhanced. |
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| Keywords: | digital holography off-axis holography phase-shifting |
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