Keyphrases
- watermarking scheme
- colour images
- mathematical morphology
- single image
- morphological operators
- copyright protection
- jpeg compression
- digital watermarking
- multi valued
- image watermarking scheme
- watermarking algorithm
- image authentication
- pixel values
- spread spectrum
- watermark embedding
- geometric attacks
- watermarking method
- shadow removal
- multiscale
- robust watermarking scheme
- watermarking technique
- pattern recognition