Pre-calculated object light-based fast calculation method for computer-generated hologram

Hironobu Sakata; Yuji Sakamoto

doi:10.1117/12.841791

10 February 2010 Pre-calculated object light-based fast calculation method for computer-generated hologram

Hironobu Sakata, Yuji Sakamoto

Proceedings Volume 7619, Practical Holography XXIV: Materials and Applications; 76190Y (2010) https://doi.org/10.1117/12.841791
Event: SPIE OPTO, 2010, San Francisco, California, United States

Abstract

Computer generated holograms are expected to be an ideal three-dimensional display system. Enormous computation time, however, is required to calculate holograms. There are fast calculation methods based on fast Fourier transforms using a patch model, but they require two-dimensional fast Fourier transforms for each patch. Therefore, calculating the object light from a complex object that has many patches takes much computation time. We propose a fast calculation method using pre-calculated object light without the fast Fourier transform and show the results of our method. Our method calculates object lights from complex objects including large-angle tilted patches using only one cylindrical pre-calculated object light. The memory needed for pre-calculated object light is smaller than the previously proposed method.

Citation Download Citation

Hironobu Sakata and Yuji Sakamoto "Pre-calculated object light-based fast calculation method for computer-generated hologram", Proc. SPIE 7619, Practical Holography XXIV: Materials and Applications, 76190Y (10 February 2010); https://doi.org/10.1117/12.841791

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