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Accelerated one-step generation of full-color holographic videos using a color-tunable novel-look-up-table method for holographic three-dimensional television broadcasting.

Kim SC, Dong XB, Kim ES - Sci Rep (2015)

Bottom Line: This color-conversion property of the proposed method enables simultaneous generation of full color-CGH patterns, resulting in a significant reduction of the full color-CGH calculation time.Experimental results with test scenario show that the full color-CGH calculation time of the proposed CT-NLUT has been reduced by 45.10%, compared to the conventional NLUT.Successful computational and optical reconstructions of full color-CGH patterns confirm the feasibility of the proposed method.

View Article: PubMed Central - PubMed

Affiliation: HoloDigilog Human Media Research Center (HoloDigilog), 3D Display Research Center (3DRC), Kwangwoon University, 447-1Wolge-Dong, Nowon-Gu, Seoul 139-701, Korea.

ABSTRACT
A color-tunable novel-look-up-table (CT-NLUT) for fast one-step calculation of full-color computer-generated holograms is proposed. The proposed method is composed of four principal fringe patterns (PFPs) such as a baseline, a depth-compensating and two color-compensating PFPs. CGH patterns for one color are calculated by combined use of baseline-PFP and depth-compensating-PFP and from them, those for two other colors are generated by being multiplied by the corresponding color-compensating-PFPs. color-compensating-PFPs compensate for differences in the wavelength between two colors based on their unique achromatic thin-lens properties, enabling transformation of one-color CGH pattern into those for other colors. This color-conversion property of the proposed method enables simultaneous generation of full color-CGH patterns, resulting in a significant reduction of the full color-CGH calculation time. Experimental results with test scenario show that the full color-CGH calculation time of the proposed CT-NLUT has been reduced by 45.10%, compared to the conventional NLUT. It has been further reduced by 96.01% when a data compression algorithm, called temporal redundancy-based NLUT, was used together, which means 25-fold reduction of its full color-CGH calculation time. Successful computational and optical reconstructions of full color-CGH patterns confirm the feasibility of the proposed method.

No MeSH data available.


Related in: MedlinePlus

Comparison of the calculation time per one object-point of the NLUT, CT-NLUT, TR/NLUT and TR/CT-NLUT methods.
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f2: Comparison of the calculation time per one object-point of the NLUT, CT-NLUT, TR/NLUT and TR/CT-NLUT methods.

Mentions: In addition, Fig. 2 shows the frame-based calculation time per one object-point variations of the conventional and proposed methods. As discussed above, calculation time per one object-point values of the CT-NLUT apparently appear to be much reduced, compared to those of the NLUT in all frames and scenarios.


Accelerated one-step generation of full-color holographic videos using a color-tunable novel-look-up-table method for holographic three-dimensional television broadcasting.

Kim SC, Dong XB, Kim ES - Sci Rep (2015)

Comparison of the calculation time per one object-point of the NLUT, CT-NLUT, TR/NLUT and TR/CT-NLUT methods.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4566101&req=5

f2: Comparison of the calculation time per one object-point of the NLUT, CT-NLUT, TR/NLUT and TR/CT-NLUT methods.
Mentions: In addition, Fig. 2 shows the frame-based calculation time per one object-point variations of the conventional and proposed methods. As discussed above, calculation time per one object-point values of the CT-NLUT apparently appear to be much reduced, compared to those of the NLUT in all frames and scenarios.

Bottom Line: This color-conversion property of the proposed method enables simultaneous generation of full color-CGH patterns, resulting in a significant reduction of the full color-CGH calculation time.Experimental results with test scenario show that the full color-CGH calculation time of the proposed CT-NLUT has been reduced by 45.10%, compared to the conventional NLUT.Successful computational and optical reconstructions of full color-CGH patterns confirm the feasibility of the proposed method.

View Article: PubMed Central - PubMed

Affiliation: HoloDigilog Human Media Research Center (HoloDigilog), 3D Display Research Center (3DRC), Kwangwoon University, 447-1Wolge-Dong, Nowon-Gu, Seoul 139-701, Korea.

ABSTRACT
A color-tunable novel-look-up-table (CT-NLUT) for fast one-step calculation of full-color computer-generated holograms is proposed. The proposed method is composed of four principal fringe patterns (PFPs) such as a baseline, a depth-compensating and two color-compensating PFPs. CGH patterns for one color are calculated by combined use of baseline-PFP and depth-compensating-PFP and from them, those for two other colors are generated by being multiplied by the corresponding color-compensating-PFPs. color-compensating-PFPs compensate for differences in the wavelength between two colors based on their unique achromatic thin-lens properties, enabling transformation of one-color CGH pattern into those for other colors. This color-conversion property of the proposed method enables simultaneous generation of full color-CGH patterns, resulting in a significant reduction of the full color-CGH calculation time. Experimental results with test scenario show that the full color-CGH calculation time of the proposed CT-NLUT has been reduced by 45.10%, compared to the conventional NLUT. It has been further reduced by 96.01% when a data compression algorithm, called temporal redundancy-based NLUT, was used together, which means 25-fold reduction of its full color-CGH calculation time. Successful computational and optical reconstructions of full color-CGH patterns confirm the feasibility of the proposed method.

No MeSH data available.


Related in: MedlinePlus