Method and apparatus for providing transparency in an object bas

Details Method and apparatus for providing transparency in an object bas Method and apparatus for providing transparency in an object bas

1993-04-28

1995-06-27

Nguyen, Phu K.

G06F 1562

Patent

active

054287243

ABSTRACT:
A system for adding transparency to an object based rasterized image includes comparing edge information with a pixel position on a scan line in order to determine the active objects on the scan line based on level information and determining a highest active opaque object level and a highest active transparent object level. According to the present invention, whenever the highest active opaque object level and the highest active transparent object level intersect at one pixel location, the higher of the two levels is output.

REFERENCES:
patent: 5303334 (1994-04-01), Snyder et al.

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