Research and application of dual-camera dynamic inline digital holography using two-step phase-shifting
cepstrum technique
Posted on 2020-03-26 - 16:12
Due to limits in the properties of digital cameras, in-line digital holography is commonly used to take full advantage
of the sampling space of the camera. To realize the dynamic high-resolution measurement of in-line digital
holography, dual-camera dynamic in-line digital holography is proposed. By means of a two-step phase-shifting
cepstrum algorithm and a dual-camera parallel phase-shifting recording optical path, the complex amplitude of the
object wave can be reconstructed without its zero-order and conjugate terms. Meanwhile, a novel spherical wave
interference calibration method is also developed for the dual-camera recording system, and image correction is
carried out via rotation, translation and diffraction, with an average error of phase correction of 0.1107 rad.
Finally, the feasibility and effectiveness of the proposed technique is well demonstrated by a practical application
of dynamic temperature field measurement in a transparent medium.
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Pan, Yun; Wang, Kaifu; Gu, Guoqing (2020). Research and application of dual-camera dynamic inline digital holography using two-step phase-shifting
cepstrum technique. Optica Publishing Group. Collection. https://doi.org/10.6084/m9.figshare.c.4880208.v1
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AUTHORS (3)
YP
Yun Pan
KW
Kaifu Wang
GG
Guoqing Gu