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Proceedings Paper

Three-dimensional sprites for lenticular-type three-dimensional display
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Paper Abstract

The 3D sprite technique is proposed, which enables to rapidly update 3D images of the lenticular type 3D display. The 3D sprite technique was developed for the 72-directional display which consists of a WQUXGA (3,840×2,400) LCD panel and a slanted lenticular sheet. It displays a large number of directional images in 72 different horizontal directions with nearly parallel rays. When using a slanted lenticlular sheet, the image interpolation is required in the image interlacing process. The time required to update the whole 3D image is about 0.5 second using a PC (Pentium4 2.4GHz). The 3D sprites were implemented by software. The developed software has the ability to display 40, 12, and 4 sprites at the video rate (30 Hz) for the sprite sizes of 8×8, 16×16, and 32×32, respectively. The 3D sprite technique developed in the present study has following features: (a) supports three different data types (2D type, 3D type, and 360° type), (b) variable image size (8×8, 16×16, 32×32, and etc.), (c)scaling sprites depending on the z-coordinates, and (d) correct occlusion of sprites depending on z-coordinate. The 3D sprite technique is combined with the fingertip detection system to construct a virtual reality system in which the 3D image is interactively manipulated by the fingertip.

Paper Details

Date Published: 30 January 2006
PDF: 8 pages
Proc. SPIE 6055, Stereoscopic Displays and Virtual Reality Systems XIII, 60551H (30 January 2006); doi: 10.1117/12.650548
Show Author Affiliations
Takeshi Dairiki, Tokyo Univ. of Agriculture and Technology (Japan)
Yasuhiro Takaki, Tokyo Univ. of Agriculture and Technology (Japan)

Published in SPIE Proceedings Vol. 6055:
Stereoscopic Displays and Virtual Reality Systems XIII
Andrew J. Woods; Mark T. Bolas; Ian E. McDowall; Neil A. Dodgson; John O. Merritt, Editor(s)

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