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Computer holography: 3D digital art based on high-definition CGH


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Title Computer holography: 3D digital art based on high-definition CGH
Title of Series The 9th International Symposium on Display Holography (ISDH 2012)
Part Number 31
Number of Parts 47
Author Matsushima, Kyoji
License CC Attribution - NoDerivatives 2.0 UK: England & Wales:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
DOI 10.5446/21036
Publisher River Valley TV
Release Date 2012
Language English

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Subject Area Computer Science
Abstract Recently, we presented some high-definition full-parallax CGHs calculated by our polygon-based method and fabricated by laser lithography system. These holograms, composed of more than billions pixels, produce very fine spatial 3D images of occluded virtual scenes and objects. The optically reconstructed images are comparable to that in classical holography. Strong sensation of depth caused by these high-definition CGHs has never been achieved by conventional 3D systems and pictures other than holography. In addition, we have also presented a new technique called “digitized holography.” In this technique, fringe caused by interference between a real existing object wave and reference wave is digitally recorded with wide area and high sampling density by using image sensors. The recorded object wave is incorporated in a virtual 3D scene constructed of CG-like 2D and 3D objects, and then, the virtual scene that keeps proper occluded relation is optically reconstructed by the technique of CGHs. This technique make it possible to digitally edit holograms after recording and will open the world of a novel digital art, referred to as Computer Holography. Various source materials can be input data in computer holography, for example, digital photos, illustrations, polygon-mesh 3D objects, multi-viewpoints images and captured fields of real existing objects. The 3D scene including these materials is designed employing a field-based digital-editing technique and optically reconstructed by the CGH technique as designers intend. We will present details of the technique as well as the concept of the computer holography. Furthermore, some of our works in computer holography will be demonstrated in the meeting.

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