4 April 2012 Comparative evaluation of the image-reconstruction algorithms of single-shot phase-shifting digital holography
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Abstract
We comparatively evaluated two types of image-reconstruction algorithms in two types of single-shot phase-shifting digital holography techniques to investigate which algorithm is more suitable for high-quality and instantaneous three-dimensional imaging. Two types of image-reconstruction algorithms were proposed for each single-shot phase-shifting interferometry so far. One generates multiple phase-shifted holograms from the recorded single hologram by utilizing interpolation and derives the complex amplitude of the object wave by applying the calculation of phase-shifting interferometry to the multiple phase-shifted holograms. The other does not use interpolation but applies the calculation of phase-shifting interferometry to the neighboring pixels in the recorded hologram to derive the complex amplitude. We experimentally evaluated the qualities of the image reconstructed by the algorithms in each single-shot phase-shifting technique. It was clarified that the former algorithm is more effective for high-quality imaging free from the unwanted images in single-shot technique using an array of optical elements. In single-shot technique using spatial carrier, although the latter algorithm is able to reconstruct a brighter image for wide area than the former, spatial-filtering technique is needed for removing the conjugate image.
© 2012 SPIE and IS&T
Tatsuki Tahara, Yuki Shimozato, Takashi Kakue, Motofumi Fujii, Xia Peng, Yasuhiro Awatsuji, Shogo Ura, Kenzo Nishio, Toshihiro Kubota, Osamu Matoba, "Comparative evaluation of the image-reconstruction algorithms of single-shot phase-shifting digital holography," Journal of Electronic Imaging 21(1), 013021 (4 April 2012). https://doi.org/10.1117/1.JEI.21.1.013021 . Submission:
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