Geometrically invariant watermarking: synchronization through circular Hough transform.

Hae-Yeoun Lee Choong-Hoon Lee Heung-Kyu Lee

Published in: Multim. Tools Appl. (2007)

Keyphrases

circular hough transform
optic disc
log gabor filters
watermarking scheme
watermarking algorithm
image quality
spread spectrum
iris segmentation