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Chinese Optics Letters, Volume. 14, Issue 8, 080901(2016)

Acceleration for computer-generated hologram in head-mounted display with effective diffraction area recording method for eyes

Zhidong Chen1, Xinzhu Sang1、*, Qiaojuan Lin1, Jin Li1, Xunbo Yu1, Xin Gao1, Binbin Yan1, Chongxiu Yu1, Wenhua Dou2, and Liquan Xiao2
Author Affiliations
  • 1State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • 2School of Computer Science, National University of Defense Technology, Changsha 410073, China
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    Figures&Tables (6)
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    References (16)
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    Structure of the HHMD system and the principle of computational reduction.

    Fig. 1. Structure of the HHMD system and the principle of computational reduction.

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    Parallel computing of the value of hologram pixels. The frustum setting determines the contributing object points.

    Fig. 2. Parallel computing of the value of hologram pixels. The frustum setting determines the contributing object points.

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    Numerical simulation. Upper: reconstructed images from the three algorithms. The resolution of the images (can be regarded as the number of the object points): macaroon (150×150), rabbit (150×199), and clown (150×217). Bottom: calculated time (CPU and GPU) of generating the hologram from the three algorithms and the PSNR of the reconstructed images.

    Fig. 3. Numerical simulation. Upper: reconstructed images from the three algorithms. The resolution of the images (can be regarded as the number of the object points): macaroon (150×150), rabbit (150×199), and clown (150×217). Bottom: calculated time (CPU and GPU) of generating the hologram from the three algorithms and the PSNR of the reconstructed images.

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    Photograph of the experiment system.

    Fig. 4. Photograph of the experiment system.

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    Optically reconstructed images. (a) The nearer objects are focused, and (b) the farther objects are focused.

    Fig. 5. Optically reconstructed images. (a) The nearer objects are focused, and (b) the farther objects are focused.

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    • Table 1. Comparison of the Calculation Time for Different Methods

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      Table 1. Comparison of the Calculation Time for Different Methods

       CPU (s)GPU (s)
      Traditonal method1668075.9
      Algorithm one295414.2
      Algorithm twoW=1.5  mm11196.1
      W=1.3  mm8264.0
      W=1.0  mm4031.9
      W=0.8  mm2590.9
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    Zhidong Chen, Xinzhu Sang, Qiaojuan Lin, Jin Li, Xunbo Yu, Xin Gao, Binbin Yan, Chongxiu Yu, Wenhua Dou, Liquan Xiao, "Acceleration for computer-generated hologram in head-mounted display with effective diffraction area recording method for eyes," Chin. Opt. Lett. 14, 080901 (2016)

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    Paper Information

    Category: Holography

    Received: Mar. 3, 2016

    Accepted: May. 24, 2016

    Published Online: Aug. 3, 2018

    The Author Email: Xinzhu Sang (xzsang@bupt.edu.cn)

    DOI:10.3788/COL201614.080901

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology