計算機ホログラムの時分割表示

概要

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Time sharing methods : frame and field sharing methods for displaying computer-generated holograms are described. The dynamic range of gray levels is limited when using electronic display devices such as Liquid Crystal Displays (LCDs). Technically, it leads to a lack of sufficient data to reproduce the object, resulting in a low signal to noise (S/N) ratio. We relaxes this limitation by using sequencing frame/field images as moving pictures. First, 3D-data of the display object are decomposed into several parts, and each part is sampled as a set of point light sources. The computed holographic fringe patterns are displayed on different frames. These frames are displayed as a contiguous image sequence. If the frames are displayed continually at a high speed, human vision perceives them as a single object. This approach relaxes the strict dynamic range requirements for the display devices.
1998-08-28