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- Title
Diffraction-engineered holography: Beyond the depth representation limit of holographic displays.
- Authors
Yang, Daeho; Seo, Wontaek; Yu, Hyeonseung; Kim, Sun Il; Shin, Bongsu; Lee, Chang-Kun; Moon, Seokil; An, Jungkwuen; Hong, Jong-Young; Sung, Geeyoung; Lee, Hong-Seok
- Abstract
Holography is one of the most prominent approaches to realize true-to-life reconstructions of objects. However, owing to the limited resolution of spatial light modulators compared to static holograms, reconstructed objects exhibit various coherent properties, such as content-dependent defocus blur and interference-induced noise. The coherent properties severely distort depth perception, the core of holographic displays to realize 3D scenes beyond 2D displays. Here, we propose a hologram that imitates defocus blur of incoherent light by engineering diffracted pattern of coherent light with adopting multi-plane holography, thereby offering real world-like defocus blur and photorealistic reconstruction. The proposed hologram is synthesized by optimizing a wave field to reconstruct numerous varifocal images after propagating the corresponding focal distances where the varifocal images are rendered using a physically-based renderer. Moreover, to reduce the computational costs associated with rendering and optimizing, we also demonstrate a network-based synthetic method that requires only an RGB-D image. Improving the image depth perception of holograms while maintaining high image quality is a current challenge. Here the authors propose an efficient solution relying on a multi-plane hologram technique that reconstruct different blurred images and sharply focused images depending on a propagation distance.
- Subjects
HOLOGRAPHY; HOLOGRAPHIC displays; COHERENCE (Optics); SPATIAL light modulators; DEPTH perception; SPATIAL resolution
- Publication
Nature Communications, 2022, Vol 13, Issue 1, p1
- ISSN
2041-1723
- Publication type
Article
- DOI
10.1038/s41467-022-33728-5