Enhancing texture edges

Details Enhancing texture edges Enhancing texture edges

1997-11-17

1999-11-09

Johns, Andrew W.

Image analysis

Image enhancement or restoration

Focus measuring or adjusting

382266, G06K 936

Patent

active

059829397

ABSTRACT:
A system and method of antialiasing edges of a texture that is being projected onto a polygon surface are described. The system operates by determining an initial opacity value of a pixel of the polygon surface as mapped into the texture, and then adjusting the initial opacity value so as to achieve a single pixel wide projected texture edge. This adjustment is performed by determining whether the initial opacity value is less than a threshold, where the threshold represents a desired alpha value of pixels along a projected texture edge. If the initial opacity value is less than the threshold, then a new opacity value of the pixel is set equal to a value denoting full transparency. If, instead, the initial opacity value is greater than the threshold, then a new opacity value of the pixel is set equal to a value denoting full opacity.

REFERENCES:
patent: 4704605 (1987-11-01), Edelson
patent: 5307450 (1994-04-01), Grossman
patent: 5361385 (1994-11-01), Bakalash
patent: 5490240 (1996-02-01), Foran et al.

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