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30 January 2006 Three-dimensional sprites for lenticular-type three-dimensional display
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Proceedings Volume 6055, Stereoscopic Displays and Virtual Reality Systems XIII; 60551H (2006)
Event: Electronic Imaging 2006, 2006, San Jose, California, United States
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.
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Takeshi Dairiki and Yasuhiro Takaki "Three-dimensional sprites for lenticular-type three-dimensional display", Proc. SPIE 6055, Stereoscopic Displays and Virtual Reality Systems XIII, 60551H (30 January 2006);

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