Numerically correcting the joint misplacement of the sub-holograms in spatial synthetic aperture digital Fresnel holography

Hongzhen Jiang, Jianlin Zhao, Jianglei Di, Chuan Qin

科研成果: 期刊稿件文章同行评审

21 引用 (Scopus)

摘要

We propose an effective reconstruction method for correcting the joint misplacement of the sub-holograms caused by the displacement error of CCD in spatial synthetic aperture digital Fresnel holography. For every two adjacent sub-holograms along the motion path of CCD, we reconstruct the corresponding holographic images under different joint distances between the sub-holograms and then find out the accurate joint distance by evaluating the quality of the corresponding synthetic reconstructed images. Then the accurate relative position relationships of the sub-holograms can be confirmed according to all of the identified joint distances, with which the accurate synthetic reconstructed image can be obtained by superposing the reconstruction results of the sub-holograms. The numerical reconstruction results are in agreement with the theoretical analysis. Compared with the traditional reconstruction method, this method could be used to not only correct the joint misplacement of the sub-holograms without the limitation of the actually overlapping circumstances of the adjacent sub-holograms, but also make the joint precision of the sub-holograms reach sub-pixel accuracy.

源语言英语
页(从-至)18836-18842
页数7
期刊Optics Express
17
21
DOI
出版状态已出版 - 12 10月 2009

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