Browse Prior Art Database

Arbitrary Anti-aliasing Scale & Rotation Based on index-tables Disclosure Number: IPCOM000010197D
Original Publication Date: 2002-Nov-04
Included in the Prior Art Database: 2002-Nov-04

Publishing Venue


Related People

David Hayner Sang Park Reginald O’Donoghue


Even if scaling and rotation are very common operations in many digital imaging, due to the computational complexity, Hardware implementations of arbitrary anti-aliasing scaling and rotation has been very rarely challenged. The authors propose an efficient and arbitrary anti-aliasing scaling and ration scheme based on index-table. By using this scheme, 1 degree rotation and 1% scaling can be implemented in hardware very efficiently. Another advantage of this scheme is that scaling and rotation are analyzed from a unified viewpoint so that the two operations can be easily merged in an efficient implementation.