Keyphrases
- watermarking scheme
- jpeg compression
- digital images
- peak signal to noise ratio
- watermarked image
- spread spectrum
- bit rate
- digital watermarking
- visual quality
- image quality
- watermark extraction
- singular values
- watermarking algorithm
- spatial domain
- copyright protection
- cover image
- reconstructed image
- image compression
- quality assessment
- discrete cosine transform
- image data
- computational complexity
- watermarking technique
- least squares
- motion estimation
- multiscale