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Article

Time-Division Color Holographic Projection in Large Size Using a Digital Micromirror Device

Graduate School of Engineering, Chiba University, Chiba 2638522, Japan
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Author to whom correspondence should be addressed.
It is an invited paper for the Special Issue.
Academic Editor: Ting-Chung Poon
Appl. Sci. 2021, 11(14), 6277; https://doi.org/10.3390/app11146277
Received: 15 June 2021 / Revised: 6 July 2021 / Accepted: 6 July 2021 / Published: 7 July 2021
(This article belongs to the Special Issue Holography, 3D Imaging and 3D Display Volume II)
Holographic projection is a simple projection as it enlarges or reduces reconstructed images without using a zoom lens. However, one major problem associated with this projection is the deterioration of image quality as the reconstructed image enlarges. In this paper, we propose a time-division holographic projection, in which the original image is divided into blocks and the holograms of each block are calculated. Using a digital micromirror device (DMD), the holograms were projected at high speed to obtain the entire reconstructed image. However, the holograms on the DMD need to be binarized, thereby causing uneven brightness between the divided blocks. We correct this by controlling the displaying time of each hologram. Additionally, combining both the proposed and noise reduction methods, the image quality of the reconstructed image was improved. Results from the simulation and optical reconstructions show we obtained a full-color reconstruction image with reduced noise and uneven brightness. View Full-Text
Keywords: holography; hologram; computer-generated hologram; holographic projection; time-division; digital micromirror device holography; hologram; computer-generated hologram; holographic projection; time-division; digital micromirror device
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MDPI and ACS Style

Takahashi, T.; Shimobaba, T.; Kakue, T.; Ito, T. Time-Division Color Holographic Projection in Large Size Using a Digital Micromirror Device. Appl. Sci. 2021, 11, 6277. https://doi.org/10.3390/app11146277

AMA Style

Takahashi T, Shimobaba T, Kakue T, Ito T. Time-Division Color Holographic Projection in Large Size Using a Digital Micromirror Device. Applied Sciences. 2021; 11(14):6277. https://doi.org/10.3390/app11146277

Chicago/Turabian Style

Takahashi, Takayuki, Tomoyoshi Shimobaba, Takashi Kakue, and Tomoyoshi Ito. 2021. "Time-Division Color Holographic Projection in Large Size Using a Digital Micromirror Device" Applied Sciences 11, no. 14: 6277. https://doi.org/10.3390/app11146277

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