Computer graphics processing and selective visual display system – Display driving control circuitry – Controlling the condition of display elements
Patent
1994-06-06
1998-02-03
Zimmerman, Mark K.
Computer graphics processing and selective visual display system
Display driving control circuitry
Controlling the condition of display elements
395137, 395138, 395139, 345126, 345127, G06T 300
Patent
active
057153850
ABSTRACT:
Affine image transformations are performed in an interleaved manner, whereby coordinate transformations and intensity calculations are alternately performed incrementally on small portions of an image. The pixels are processed in rows such that after coordinates of a first pixel are determined for reference, each pixel in a row, and then pixels in vertically adjacent rows, are processed relative to the coordinates of the previously processed adjacent pixels. After coordinate transformation to produce affine translation, rotation, skew and/or scaling, intermediate metapixels are vertically split and shifted to eliminate holes and overlaps. Intensity values of output metapixels are calculated as being proportional to the sum of scaled portions of the intermediate metapixels which cover the output pixels respectively.
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Kannappan Karthikeyan
Stearns Charles C.
LSI Logic Corporation
Smith Oppenheimer Poms
Zimmerman Mark K.
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