Rotational and direct compensation for digital hologram phase unwrapping
Rotational and direct compensation for digital hologram phase unwrapping
复制标题
数字全息图相位展开的旋转和直接补偿
DOI：
10.1117/12.975750
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
Shusuke Nishiyama
中科院分区：
文献类型：
--
作者：
Samia Heshmat;Satoshi Tomioka;Shusuke Nishiyama
在数字全息中，相位携带物体的3D信息。然而，相位映射是模糊的，因为提取的相位变成遭受2π相位跳跃的形式。在这种情况下，相位数据必须展开以适合使用。为此，我们开发了一种新的相位展开算法，适用于数字全息地图。利用模拟和真实的相位数据对该算法进行了评价，并与以往的相位展开方法进行了比较。实验结果表明，该方法具有较好的解缠效果，且计算时间较短。
In digital holography, phases carry the 3D information of objects. However, phase mapping is ambiguous, as the extracted phase turns into a form that suffers from 2π phase jumps. In this case the phase data must be unwrapped to fit for use. For this reason, we developed a new phase unwrapping algorithm that is applicable to digital hologram maps. The proposed algorithm has been evaluated and compared with past phase unwrapping methods by using simulated and real phase data. Results show that the proposed method gives satisfactory unwrapped results with low computation time.