Effect of point pitch on speckle noise in computer-generated hologram using point-based method

Masaya Mitobe; Yuji Sakamoto

doi:10.1117/12.2509088

1 March 2019 Effect of point pitch on speckle noise in computer-generated hologram using point-based method

Masaya Mitobe, Yuji Sakamoto

Proceedings Volume 10944, Practical Holography XXXIII: Displays, Materials, and Applications; 109440R (2019) https://doi.org/10.1117/12.2509088
Event: SPIE OPTO, 2019, San Francisco, California, United States

Abstract

Computer-generated hologram (CGH) has a serious problem that stereoscopic images are deteriorated by speckle noise. In analog holography, statistical characteristics of speckle noise were theorized, but it is difficult to apply the theory to CGH, which is effected by computerization such as sampling, quantization and so on. In this paper, we focused on point-based method which is one of the calculation methods of CGH and objectively evaluated the effect of the density of arrange point light sources on speckle noise. We evaluated the image quality by PSNR, considering the resolution of the eye. By objective evaluation, we confirmed the effect on speckle noise by changing the density of point light sources.

Citation Download Citation

Masaya Mitobe and Yuji Sakamoto "Effect of point pitch on speckle noise in computer-generated hologram using point-based method", Proc. SPIE 10944, Practical Holography XXXIII: Displays, Materials, and Applications, 109440R (1 March 2019); https://doi.org/10.1117/12.2509088

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