Summary
International Technical Conference on Circuits/Systems, Computers and Communications
2008
Session Number:A1
Session:
Number:A1-3
Watermarking Method Resistant to Geometrical Slight Distortion Using Variance of Color Difference and Wavelet Transform
Kei Sakiyama, Motoi Iwata, Akio Ogihara, Akira Shiozaki,
pp.-
Publication Date:2008/7/7
Online ISSN:2188-5079
Summary:
We propose a watermarking method that has robustness against geometrical slight distortions. The method is based on the variances of two color components of an image. When an image is geometrically distorted, two color components on the same position cause the same distortion, and the relation of variances of two color components in a local domain does not change easily. So we embed a watermark by changing the variances of two color components so that the watermark may be robust against geometrical distortions.