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Electronics and Telecommunications Research Institute (한국전자통신연구원)
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Computational load reduction by avoiding the recalculation of angular redundancy in computer-generated holograms

  • Jia, Jia (Center for Photonic Devices and Sensors, University of Cambridge) ;
  • Chen, Jhensi (Center for Photonic Devices and Sensors, University of Cambridge) ;
  • Chu, Daping (Center for Photonic Devices and Sensors, University of Cambridge)
  • Received : 2018.08.16
  • Accepted : 2018.12.12
  • Published : 2019.02.12
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Abstract

A fast hologram calculation approach is proposed to reduce computational load by avoiding the recalculation of redundancy information. In the proposed method, the hologram is divided into several sub-holograms that record and reconstruct different views of 3D objects. The sub-hologram is generated from its adjacent calculated sub-holograms by only adding the holograms of difference images between an adjacent pair of views. The repetitive information of two adjacent views is called angular redundancy. Therefore, avoiding the recalculation of this angular redundancy can considerably reduce the computational load. Experimental results confirm that the proposed method can reduce the computational time for the statue head, rabbits, and car to 4.73%, 6.67%, and 10.4%, respectively, for uniform intensity, and to 56.34%, 57.9%, and 66.24%, respectively, for 256 levels intensity, when compared to conventional methods.

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References

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