Speckle suppression in computational hologram generated using ray-sampling plane

Masahiro Yamaguchi; Takeru Utsugi

doi:10.1117/12.2054762

5 June 2014 Speckle suppression in computational hologram generated using ray-sampling plane

Masahiro Yamaguchi, Takeru Utsugi

Proceedings Volume 9117, Three-Dimensional Imaging, Visualization, and Display 2014; 91170A (2014) https://doi.org/10.1117/12.2054762
Event: SPIE Sensing Technology + Applications, 2014, Baltimore, MD, United States

Abstract

Speckle reduction in 3D displays by computational holography is investigated. As the important advantage of holographic 3D display is the capability of high-resolution display of deep 3D scene, the resolution of the image after applying speckle suppression is primarily discussed. Then we present a method for speckle reduction in electronic holographic display based on the recently proposed approach that utilizes time-multiplexing of holograms with sparse object points. The method is adapted to the technique for hologram calculation using ray-sampling plane. It becomes possible to apply speckle suppression to the holographic display of deep 3D scene. It was shown that smaller number of frames for time-multiplexing effectively reduces the speckle noise through the computer simulation. Additionally, angular-multiplexing technique is presented to reduce the number of frames for time-multiplexing, and the experimental results show the effectiveness of the proposed speckle suppression.

Citation Download Citation

Masahiro Yamaguchi and Takeru Utsugi "Speckle suppression in computational hologram generated using ray-sampling plane", Proc. SPIE 9117, Three-Dimensional Imaging, Visualization, and Display 2014, 91170A (5 June 2014); https://doi.org/10.1117/12.2054762

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