Keyphrases
- color images
- digital images
- watermarking algorithm
- watermarking scheme
- gray scale
- color space
- color information
- watermarking technique
- spread spectrum
- copyright protection
- jpeg compression
- digital watermarking
- geometric distortions
- digital watermark
- color image segmentation
- image watermarking
- watermarking method
- robust image watermarking
- grayscale images
- video watermarking
- image processing
- color correction
- image processing operations
- cross correlations
- watermark detection
- spatial domain
- data hiding
- discrete wavelet transformation
- robust watermarking scheme
- watermark embedding
- color texture
- computer vision
- impulse noise
- image fidelity
- feature vectors
- color channels
- color components
- human visual system
- contrast enhancement