Resolution analysis of Fourier hologram using integral imaging and its enhancement

Ni Chen; Jae-Hyeung Park; Nam Kim

doi:10.1117/12.840175

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12 February 2010 Resolution analysis of Fourier hologram using integral imaging and its enhancement

Ni Chen; Jae-Hyeung Park; Nam Kim

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Proceedings Volume 7618, Emerging Liquid Crystal Technologies V; 761809 (2010) https://doi.org/10.1117/12.840175
Event: SPIE OPTO, 2010, San Francisco, California, United States

Abstract

The resolution of the reconstructed object from the Fourier hologram that is generated from multiple view images is analyzed in this paper. We found that the maximum view angle and the wavelength limit the maximum frequency of the reconstructed object. The relationship between the bandwidth of the object and the lens pitch of the lens array affects the aliasing of the reconstruction. All these four parameters determine the resolution of the reconstruction from the Fourier hologram. Based on these analyses, we propose a lens array shift method to enhance the resolution of the reconstructed object from the Fourier hologram. By shifting the lens array, multiple sets of element images are obtained, and high spatial density element image is combined from the multiple sets of element images. The resolution enhanced reconstruction of the object can be obtained from the Fourier hologram of the combined element images. The principles are verified by experiment.

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Ni Chen, Jae-Hyeung Park, and Nam Kim "Resolution analysis of Fourier hologram using integral imaging and its enhancement", Proc. SPIE 7618, Emerging Liquid Crystal Technologies V, 761809 (12 February 2010); https://doi.org/10.1117/12.840175

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KEYWORDS

Holograms

Image resolution

Resolution enhancement technologies

3D image processing

Fourier transforms

Image processing

Integral imaging

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