Real-time calculation of high-definition computer-generated holograms

by Antoine Lagrange (B<>com) - 2025.02.27

tags: VAADER Seminar

Abstract

Holography is often considered as the most promising immersive technology because it provides all the depth cues of the human visual system. Still, it relies on diffraction, therefore, to reach a wide field of view, the pixels of computer-generated holograms must be about a micrometer. Holograms of few centimeters contain billion of pixels and this huge amount of data is a major issue. To solve this limitation, we proposed a view-specific layered holographic stereogram approach combined with a view-dependent error diffusion algorithm. This method selects the light waves of the 3D scene that reach a specific viewing area and leverages this particular configuration to apply an error diffusion algorithm. Two additional quality enhancement features are observed: the reduction of the conjugate order perceptibility and the increased brightness of the reconstructions. Digital and optical experiments demonstrate the time savings and quality enhancements of our approach.