Browse Prior Art Database

Arbitrary Anti-aliasing Scale & Rotation Based on index-tables

IP.com Disclosure Number: IPCOM000010197D
Original Publication Date: 2002-Nov-04
Included in the Prior Art Database: 2002-Nov-04

Publishing Venue

Motorola

Related People

Authors:
David Hayner Sang Park Reginald O’Donoghue

Abstract

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.