Key Laboratory of Photoelectronic Imaging Technology and System, Ministry of Education of China, School of Optoelectronics, Beijing Institute of Technology, Beijing, China.
Opt Lett. 2013 Aug 1;38(15):2676-9. doi: 10.1364/OL.38.002676.
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.
计算机生成全息图（CGH）的计算量繁重和三维图像的强度调制不精确是动态全息显示中的关键问题。提出了非均匀采样方法来加速 CGH 的生成并精确调制纯相位 CGH 的重建强度。该方法可以适当地消除冗余信息，当与新的查找表方法结合使用时，可以将存储量减少 70%。可以成功实现重建三维图像的多灰度调制。进行了数值模拟和光学实验，两者都吻合得很好。相信该方法可用于三维动态全息显示。
