Adaptive Watermarking in Spatial Domain for Still Image.
Somchok KimpanAttasit LasakulChom KimpanPublished in: IKE (2004)
Keyphrases
- spatial domain
- frequency domain
- log polar
- additive noise
- spectral domain
- discrete cosine transformation
- fourier domain
- high frequency components
- image data
- data hiding
- temporal domain
- image authentication
- wavelet domain
- secret message
- transform domain
- watermarked image
- input image
- enhanced image
- multiscale
- projections onto convex sets
- dct domain
- space variant
- motion estimation
- cover image
- template matching
- image resizing
- image segmentation
- image processing operations
- low frequency
- jpeg images
- image watermarking
- spread spectrum
- test images
- image content
- watermarking method
- edge direction
- watermarking scheme
- high frequency
- geometric distortions
- pixel values
- post processing
- image compression
- image interpolation
- singular values