Image rotation with substantially no aliasing error

Details Image rotation with substantially no aliasing error Image rotation with substantially no aliasing error

2001-03-28

2008-08-12

Tung, Kee M. (Department: 2628)

Computer graphics processing and selective visual display system

Computer graphics processing

Attributes

C345S530000, C345S649000, C382S298000, C382S296000

Reexamination Certificate

active

07411593

ABSTRACT:
A system, method and program product for rotating a first image in an image buffer such that the resulting, rotated image is substantially free of an aliasing error, i.e., broken lines, stair stepped edges, etc., is disclosed. An algorithm is applied to the first image that uses weighted sums of data points of the first image to create the rotated image. The weighting is based on the skew angle and data point location of the first image. The resulting rotated image also has a reduced data storage space requirement compared to rotated images created by prior art techniques.

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