Multi-color Holograms Improve Brightness in Holographic Displays

TL;DR

This paper presents a multi-color hologram driving scheme that uses simultaneous multi-light source illumination and optimization to significantly enhance brightness and realism in holographic displays.

Contribution

It introduces a novel multi-color hologram driving method that co-optimizes holograms and light source intensities to improve brightness in holographic displays.

Findings

Brightness increased up to three times

Broader range of intensity levels achieved

Enhanced perceptual realism in holographic images

Abstract

Holographic displays generate Three-Dimensional (3D) images by displaying single-color holograms time-sequentially, each lit by a single-color light source. However, representing each color one by one limits brightness in holographic displays. This paper introduces a new driving scheme for realizing brighter images in holographic displays. Unlike the conventional driving scheme, our method utilizes three light sources to illuminate each displayed hologram simultaneously at various intensity levels. In this way, our method reconstructs a multiplanar three-dimensional target scene using consecutive multi-color holograms and persistence of vision. We co-optimize multi-color holograms and required intensity levels from each light source using a gradient descent-based optimizer with a combination of application-specific loss terms. We experimentally demonstrate that our method can increase the intensity levels in holographic displays up to three times, reaching a broader range and unlocking new potentials for perceptual realism in holographic displays.