Fast hologram calculation for holographic video display

Hiroshi Yoshikawa; Takeshi Yamaguchi

doi:10.1117/12.668197

20 January 2006 Fast hologram calculation for holographic video display

Proceedings Volume 6027, ICO20: Optical Information Processing; 602725 (2006) https://doi.org/10.1117/12.668197
Event: ICO20:Optical Devices and Instruments, 2005, Changchun, China

Abstract

For practical holographic video system, it is important to generated holographic fringe as fast as possible. We have proposed an approximation method that can calculate the Fresnel hologram fast. With the proposed method, a hologram with more than one million pixels can be calculated less than one second with a personal computer. To compute the hologram, an object is assumed as a collection of self-illuminated points and the fringes from each object point are superposed. To determine the fringe, a distance between object point and sampling point on the hologram is used to obtain phase of the light. Since sampled hologram usually has small pixel intervals, the difference of the distance values between adjacent pixels is also small and its second order difference becomes a constant. Therefore, the distance value at certain pixel can be obtained from the neighbor pixel with simple additions. The experimental results show that the proposed method is quite effective for the holographic video display with full parallax.

Citation Download Citation

Hiroshi Yoshikawa and Takeshi Yamaguchi "Fast hologram calculation for holographic video display", Proc. SPIE 6027, ICO20: Optical Information Processing, 602725 (20 January 2006); https://doi.org/10.1117/12.668197

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