Zhang Cheng, Wu Feng, Zhou Jiaxuan, Wei Sui
Opt Express. 2022 Jan 3;30(1):195-209. doi: 10.1364/OE.441375.
The major challenges in traditional color phase hologram generation are the time-consuming iterative procedure and aberration caused by different wavelengths in color holographic display. Based on the original non-iterative phase hologram generation method-optimized random phase (ORAP), combined with the physical limitations of color holographic display, this paper proposes a full-support optimized random phase (FS-ORAP) method for non-iterative color phase hologram generation. FS-ORAP breaks through the limitation of the original ORAP method in the fixed support constraint of the target amplitude in the spatial domain, the full support constraint can be used to generate phase holograms of target amplitudes with arbitrary support size, which fits well with the generation mode of the three-color channel of the color phase hologram. In addition, the color aberration of the reconstructed image is eliminated by scaling the size of the three-color component. At the same time, FS-ORAP is used for the non-iterative fast generation of three-color channel holograms, which can greatly improve the generation speed of color phase holograms and can be adapted to various color holographic display techniques. Experimental results verify the feasibility of our proposed method.
传统彩色相位全息图生成中的主要挑战在于耗时的迭代过程以及彩色全息显示中不同波长引起的像差。基于原始的非迭代相位全息图生成方法——优化随机相位（ORAP），结合彩色全息显示的物理限制，本文提出了一种用于非迭代彩色相位全息图生成的全支持优化随机相位（FS - ORAP）方法。FS - ORAP突破了原始ORAP方法在空间域中目标幅度固定支持约束方面的限制，全支持约束可用于生成具有任意支持大小的目标幅度的相位全息图，这与彩色相位全息图的三色通道生成模式非常契合。此外，通过缩放三色分量的大小消除了重建图像的色差。同时，FS - ORAP用于三色通道全息图的非迭代快速生成，可大大提高彩色相位全息图的生成速度，并能适应各种彩色全息显示技术。实验结果验证了我们所提方法的可行性。
