G - Physics – 06 – T
Patent
G - Physics
06
T
G06T 11/40 (2006.01) G06T 15/20 (2006.01)
Patent
CA 2164681
The present invention provides a computer graphics system with a texel value generator capably of generating texel values using a minimal amount of computationally intensive divisions while maintaining a selectable texel accuracy criteria along a scan line. This is accomplished by adaptively selecting divisional points which delineate the scan line segments along each scan line such that the divisional points are as widely spaced as possible without exceeding the selected texel accuracy criteria. Having selected the texel accuracy criteria, such as a texel error bound optimally spaced, divisional points along the scan lines are selected as a function of the selected accuracy criteria. In general, since texture gradients are not evenly distributed over the surface of a given object and texture variations are present between different objects of the image, it is advantageous to adaptively select division points one at a time, skipping as many pixels in between divisional points as the local texture gradient will allow. Accurate texel values are computed at these divisional points and also at the end points of the scan line. Approximate texel values arc then computed for the pixels located between adjacent pair of divisional points along the scan line using a suitable scheme such as linear interpolation.
Riches Mckenzie & Herbert Llp
Sun Microsystems Inc.
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