Heavy computational load of computer-generated hologram (CGH) and imprecise intensity modulation of 3D images are crucial problems in dynamic holographic display. The nonuniform sampling method is proposed to speed up CGH generation and precisely modulate the reconstructed intensities of phase-only CGH. The proposed method can eliminate the redundant information properly, where 70% reduction in the storage amount can be reached when it is combined with the novel lookup table method. Multigrayscale modulation of reconstructed 3D images can be achieved successfully. Numerical simulations and optical experiments are performed, and both are in good agreement. It is believed that the proposed method can be used in 3D dynamic holographic display.
© 2013 Optical Society of America
Original Manuscript: May 9, 2013
Revised Manuscript: June 20, 2013
Manuscript Accepted: June 20, 2013
Published: July 22, 2013
Zhao Zhang, Juan Liu, Jia Jia, Xin Li, Jian Han, Bin Hu, and Yongtian Wang, "Tunable nonuniform sampling method for fast calculation and intensity modulation in 3D dynamic holographic display," Opt. Lett. 38, 2676-2679 (2013)