Computer graphics processing and selective visual display system – Display peripheral interface input device – Light pen for fluid matrix display panel
Patent
1991-08-29
1993-11-23
Brier, Jeffery
Computer graphics processing and selective visual display system
Display peripheral interface input device
Light pen for fluid matrix display panel
345144, 345 98, G09G 500
Patent
active
052648389
ABSTRACT:
Apparatus and method are disclosed for providing a halo (background region) around selected image data in an anti-aliased image processing system. The anti-aliased image processing system applies a distribution function to an image (impulse) point so that the impulse point contributes to the display for a plurality of pixels. In order to provide a halo, a second or halo distribution function, extending beyond the anti-aliasing distribution function, is assigned to selected impulse points. For the current pixel, the pixel for which the display attributes are being determined, the contribution to the current pixel from neighboring pixels for both the anti-aliasing distribution function and the halo distribution function are determined separately. Then the contributions from each source are combined to determine the display characteristics of the currently activated pixel. The invention provides a technique for combining or prioritizing contributions from display regions including overlapping sets impulse points.
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Johnson Michael J.
Larson Brent H.
Brier Jeffery
Honeywell Inc.
Shudy Jr. John G.
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