Speckle elimination using shift-averaging in high-rate holographic projection
Speckle elimination using shift-averaging in high-rate holographic projection
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DOI：
10.1364/oe.17.001330
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发表时间：
2009-02-02
期刊：
影响因子：
3.8
通讯作者：
Shoham, Shy
中科院分区：
文献类型：
--
作者：
Golan, Lior;Shoham, Shy
斑点是全息投影中的主要噪声源。多个全息图的时间平均可以用来降低散斑对比度，但多个全息图必须每帧计算，在计算能力上的成本。我们证明了单个全息图可以通过循环移位和时间平均来产生完全无斑点的重建。实验证明了这一概念，并讨论了其在高速率全息投影系统中的应用。(C) 2009年美国光学学会
Speckle is a major source of noise in holographic projection. Time averaging of multiple holograms may be used to reduce speckle contrast, but multiple holograms must be calculated per each frame, costing in computational power. We show that a single hologram may be used to generate a fully speckle-free reconstruction, by cyclic shifting and time averaging. We demonstrate the concept experimentally, and discuss its application for high-rate holographic projection systems. (C) 2009 Optical Society of America