Review of computer-generated hologram algorithms for color dynamic holographic three-dimensional display

Abstract

Holographic three-dimensional display is an important display technique because it can provide all depth information of a real or virtual scene without any special eyewear. In recent years, with the development of computer and optoelectronic technology, computer-generated holograms have attracted extensive attention and developed as the most promising method to realize holographic display. However, some bottlenecks still restrict the development of computer-generated holograms, such as heavy computation burden, low image quality, and the complicated system of color holographic display. To overcome these problems, numerous algorithms have been investigated with the aim of color dynamic holographic three-dimensional display. In this review, we will explain the essence of various computer-generated hologram algorithms and provide some insights for future research.

Improvement in wavefront measurement accuracy in grating array-based zonal wavefront sensors by modulating the intensity profile of the incident beam

“…a reference plane wave R (x,y) e iϕ and an object wave A(x,y) e iΦ(x,y) . 34,35 We then introduce a scheme that can make a non-uniform illumination beam into the uniform intensity profile in the Fourier plane. 2 (a) shows the interference pattern between two waves, which can be assumed to be describing the sinusoidal hologram, and the intensity line plot variation is shown in figure 2 (b).…”

Simultaneous Color Holography

“…Depth Division and Bit Division for Simultaneous Color. The prior methods most closely related to our work also use simultaneous RGB illumination over the SLM, maintain the full SLM etendue, and don't require a bulky 4𝑓 system [Pi et al 2022]. We refer to the first method as depth division multiplexing which takes advantage of the ambiguity between color and propagation distance (explained in detail in Sec.…”

49.3: A Modified Unsupervised Vision Transformer Network for High‐fidelity Computer‐generated Holography

“…Holographic display can generate the wavefront of 3D objects by loading a computergenerated hologram on a spatial light modulator (SLM) [1], therefore producing realistic 3D images with all correct depth information. However, there are still challenges remaining to be overcome for computer generated holography (CGH), such as slow calculation speed, low image quality, speckle noise and the complicated system configuration of color dynamic holographic 3D display [2].…”