Propagation of angular cross-spectral density and 3D imaging

Hidenobu Arimoto; Kazuyoshi Itoh

doi:10.1117/12.363973

1 October 1999 Propagation of angular cross-spectral density and 3D imaging

Hidenobu Arimoto, Kazuyoshi Itoh

Proceedings Volume 3804, Algorithms, Devices, and Systems for Optical Information Processing III; (1999) https://doi.org/10.1117/12.363973
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1999, Denver, CO, United States

Abstract

Interferometric 3D imaging based on measuring the space- variant cross-spectral density propagated in free space is reviewed. The spatial coherence function such as the cross- spectral density or the mutual intensity conserves the total 3D information as propagating in free space. The present method is on the basis of the propagation law of the cross- spectral density described in the Fourier domain. By using this law, the cross-spectral density across an arbitrary transverse plane is retrieved from the cross-spectral density measured on the observation plane. A series of retrieved cross-spectral densities composes the 3D intensity distribution. An experimental retrieval of the intensity distribution is demonstrated by using uncorrelated two point sources. A similarity of a point spread function of the present interferometric imaging system to an ordinary image forming system is also discussed.

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Hidenobu Arimoto and Kazuyoshi Itoh "Propagation of angular cross-spectral density and 3D imaging", Proc. SPIE 3804, Algorithms, Devices, and Systems for Optical Information Processing III, (1 October 1999); https://doi.org/10.1117/12.363973

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KEYWORDS

Interferometry

Optical fibers

3D image processing

Imaging systems

Stereoscopy

Spatial coherence

Wave propagation

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