Mr. Kentaro Sakai Profile

Kentaro Sakai

at Chiba Univ.

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Proceedings Article | 1 May 2022 Paper

On the colored holographic moving pictures employing the blue-violet color light source

Kunihiko Takano, Shinzaburo Iwanaga, Kentaro Sakai, Koki Sato, Kikuo Asai

Proceedings Volume 12177, 121772Z (2022) https://doi.org/10.1117/12.2625812

KEYWORDS: Image processing, Holograms, 3D image reconstruction, Holography, Digital micromirror devices, Computer generated holography, Light sources, 3D image processing

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In order to perform a nice space projection in the reconstructing process by the hologram containing the information of the laser lights with red, green and blue three primary colors, it may be strongly required that we must study more to improve the quality of the reconstructed images using each of the holograms generated by each of the three color lasers, and make efforts to establish a stable, smooth representing process of the holographic images of the moving pictures. Further, to extend the region of the reproducible colors, as for the blue color laser lights, it seems to be effective to employ the blue-violet laser light of shorter wave length, which corresponds to the minimum wave length of the visible ray. However, this in turn implies some difficulty in the image reproduction using diffraction. Taking care that the reproducibility of the images of the moving picture generally depends on the refresh-rate of the elements of the display, we may see that it important to study the relation between the numbers of frame required for the formation of the reproduced picture and of the hologram elements required for one sheet of still picture. In this paper, we are going to make reports on the results concerning the required number of the points of the object for which we can reproduce it as the point object by the use of the blue-violet laser light without applying time-shared multiplex reproducing technique.

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