TITLE:
Fast Watermark Synchronization Based on Complementary Templates
AUTHORS:
Jong-Uk Hou, Sang-Keun Ji, Heung-Kyu Lee
KEYWORDS:
Digital Image Watermarking; Template Matching; Affine Transform; Real-Time Detection
JOURNAL NAME:
Journal of Computer and Communications,
Vol.2 No.4,
March
18,
2014
ABSTRACT: A recent trend of the digital watermark requires
not only the robustness but also speed. To achieve these requirements, we
propose a watermark synchronization scheme based on two kinds of templates. The
first one is the rotation invariant template for estimating scale parameter,
and the second is the scale invariant template for estimating rotation
parameter. Theoretically, complementary templates greatly reduce the search
space at the detection stage and achieve robustness against the RST distortion.
The results report that the proposed method is useful for the water- mark
detection system which requires both a real-time detection and robustness.