Dynamic time-of-day sky box lighting

Details Dynamic time-of-day sky box lighting Dynamic time-of-day sky box lighting

2006-02-14

2006-02-14

Bella, Matthew C. (Department: 2676)

Computer graphics processing and selective visual display system

Computer graphics processing

Attributes

C345S428000, C345S582000, C345S586000, C345S589000, C345S630000, C345S633000, C348S586000, C348S638000, C348S642000

Reexamination Certificate

active

06999093

ABSTRACT:
A background (sky box) in a video game or other virtual reality environment dynamically changes as a function of a parameter, producing a more realistic display. Luminance-only texture and color texture data are employed to create the background. The color texture data are provided as a lookup table in which one axis of the lookup table corresponds to time or another variable, and the other axis indicates the colors of pixels in the display as a function of the altitude or azimuth of the pixels. The luminance-only texture data are thus modulated by the chrominance values from the color texture data for pixels in the background. Optionally, one of a plurality of two-dimensional color textures can be selected as a function of the variable and applied to the luminance-only texture data.

REFERENCES:
patent: 5714997 (1998-02-01), Anderson
patent: 6577351 (2003-06-01), Yu et al.
patent: 6634947 (2003-10-01), Miyamoto et al.
patent: 6661918 (2003-12-01), Gordon et al.
patent: 2003/0194110 (2003-10-01), Brodsky
patent: 2004/0080507 (2004-04-01), Von Prittwitz

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