Reduction of speckle noise in holographic images using spatial jittering in numerical reconstructions.
作者信息
Haouat Mohamed, Garcia-Sucerquia Jorge, Kellou Abdelhamid, Picart Pascal
出版信息
Opt Lett. 2017 Mar 15;42(6):1047-1050. doi: 10.1364/OL.42.001047.
PMID:28295088
Abstract
This Letter presents an easy, fast, and efficient single-shot method to reduce speckle noise in digital Fresnel holography. In this method, several images from a single hologram are reconstructed by introducing spatial displacements in the Fresnel kernel. Spatial jitters produce images with different speckle positions. Averaging the set of numerically produced images leads to a strong reduction of speckle noise in both amplitude and phase difference images. The experimental results show the suitability of the proposed approach and confirm its applicability to digital holographic interferometry.
摘要
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