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Article

Partially Overlapping Printing with Digital Filter to Improve Quality of Volume Hologram Printer – Numerical Simulation –

Deptartment of Computer Engineering, Nihon University, Funabashi, Chiba 274-8501, Japan
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This paper is an extended version of our paper published in “Hua, H.; Yamaguchi, T.; Yoshikawa, H. Partially Overlapping Printing to Improve Image Quality of Volume Hologram Printer –Numerical Simulation–. In Digital Holography and Three-Dimensional Imaging 2019; OSA: Washington, DC, USA, 2019; Paper W3A.29”.
Appl. Sci. 2020, 10(11), 3963; https://doi.org/10.3390/app10113963
Received: 15 May 2020 / Revised: 30 May 2020 / Accepted: 3 June 2020 / Published: 7 June 2020
(This article belongs to the Special Issue Practical Computer-Generated Hologram for 3D Display)
The volume hologram printer is useful for 3D display, because it is selective to the wavelength and be able to reconstruct with the natural illumination. There are many studies of a volume hologram printer been studied to output a volume hologram from a computer-generated hologram. The final volume hologram consists of tiled small holograms and the tiling manner often causes spilt lines which will have impact on image quality. With an intent to get rid of the split lines and improve the quality, fully overlapping printing was proposed recently. Each elemental hologram is overlapped both in vertical and horizontal directions by 50%. Then, the hologram is printed four times in each area and it makes the printing speed four times slower. For this case, partially overlapping printing is proposed in this paper to improve image quality with small effect in printing speed. For partial overlapping, a digital spatial filter is projected and added to every elemental hologram. Using the digital spatial filter, different partially overlapped holograms are calculated and reconstructed to compare to the non-overlapped ones. The simulation result shows that the overlapped one (10% in both vertical and horizontal) has much weaker gaps and black lines. View Full-Text
Keywords: computer-generated hologram; holographic display; 3D image; digital filter computer-generated hologram; holographic display; 3D image; digital filter
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MDPI and ACS Style

Hua, H.; Yamaguchi, T.; Yoshikawa, H. Partially Overlapping Printing with Digital Filter to Improve Quality of Volume Hologram Printer – Numerical Simulation –. Appl. Sci. 2020, 10, 3963. https://doi.org/10.3390/app10113963

AMA Style

Hua H, Yamaguchi T, Yoshikawa H. Partially Overlapping Printing with Digital Filter to Improve Quality of Volume Hologram Printer – Numerical Simulation –. Applied Sciences. 2020; 10(11):3963. https://doi.org/10.3390/app10113963

Chicago/Turabian Style

Hua, Hangbo, Takeshi Yamaguchi, and Hiroshi Yoshikawa. 2020. "Partially Overlapping Printing with Digital Filter to Improve Quality of Volume Hologram Printer – Numerical Simulation –" Applied Sciences 10, no. 11: 3963. https://doi.org/10.3390/app10113963

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