Robust Color Image Watermarking Using Geometric Invariant Quaternion Polar Harmonic Transform.
Hong-Ying YangXiangyang WangPanpan NiuAi-Long WangPublished in: ACM Trans. Multim. Comput. Commun. Appl. (2015)
Keyphrases
- image watermarking
- geometric distortions
- geometric transformations
- fourier transform
- geometric attacks
- jpeg compression
- watermarking algorithm
- polar coordinates
- lossy compression
- discrete wavelet transform
- affine transformation
- copyright protection
- digital watermarking
- color images
- watermarking technique
- signal processing
- multiscale