Computer-generated holography

Computer-generated holography (CGH) is a technique that uses computer algorithms to generate holograms. It involves generating holographic interference patterns. A computer-generated hologram can be displayed on a dynamic holographic display, or it can be printed onto a mask or film using lithography.[1] When a hologram is printed onto a mask or film, it is then illuminated by a coherent light source to display the holographic images.

The term "computer-generated holography" has become used to denote the whole process chain of synthetically preparing holographic light wavefronts suitable for observation.[2][3] If holographic data of existing objects is generated optically and recorded and processed digitally, and subsequently displayed, this is termed CGH as well.

Compared to classical holograms, computer-generated holograms have the advantage that the objects that one wants to show do not have to possess any physical reality, and can be completely synthetically generated.

Ultimately, computer-generated holography might expand upon all the roles of current computer-generated imagery. Holographic computer displays might be used for a wide range of applications, for example computer-aided design (CAD), gaming, and holographic video.

  1. ^ Sahin, Erdem; Stoykova, Elena; Mäkinen, Jani; Gotchev, Atanas (2020-03-20). "Computer-Generated Holograms for 3D Imaging: A Survey" (PDF). ACM Computing Surveys. 53 (2): 32:1–32:35. doi:10.1145/3378444. ISSN 0360-0300. S2CID 215854874.
  2. ^ Ch. Slinger; C. Cameron; M. Stanley (Aug 2005), "Computer-Generated Holography as a Generic Display Technology", Computer, 38 (8): 46–53, doi:10.1109/mc.2005.260, S2CID 7394380
  3. ^ Yaraş, Fahri; Kang, Hoonjong; Onural, Levent (29 September 2009). "Real-time phase-only color holographic video display system using LED illumination". Applied Optics. 48 (34): H48-53. Bibcode:2009ApOpt..48H..48Y. doi:10.1364/AO.48.000H48. hdl:11693/22545. PMID 19956301. S2CID 5890199.