Filling factor characteristics of masking phase-only hologram on the quality of reconstructed images

Yuanbo Deng; Daping Chu

doi:10.1117/12.2212813

7 March 2016 Filling factor characteristics of masking phase-only hologram on the quality of reconstructed images

Yuanbo Deng, Daping Chu

Proceedings Volume 9771, Practical Holography XXX: Materials and Applications; 97710M (2016) https://doi.org/10.1117/12.2212813
Event: SPIE OPTO, 2016, San Francisco, California, United States

Abstract

The present study evaluates the filling factor characteristics of masking phase-only hologram on its corresponding reconstructed image. A square aperture with different filling factor is added on the phase-only hologram of the target image, and average cross-section intensity profile of the reconstructed image is obtained and deconvolved with that of the target image to calculate the point spread function (PSF) of the image. Meanwhile, Lena image is used as the target image and evaluated by metrics RMSE and SSIM to assess the quality of reconstructed image. The results show that the PSF of the image agrees with the PSF of the Fourier transform of the mask, and as the filling factor of the mask decreases, the width of PSF increases and the quality of reconstructed image drops. These characteristics could be used in practical situations where phase-only hologram is confined or need to be sliced or tiled.

Citation Download Citation

Yuanbo Deng and Daping Chu "Filling factor characteristics of masking phase-only hologram on the quality of reconstructed images", Proc. SPIE 9771, Practical Holography XXX: Materials and Applications, 97710M (7 March 2016); https://doi.org/10.1117/12.2212813

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