Keyphrases
- image compression
- spatial domain
- watermarked image
- bit allocation
- discrete cosine transformation
- frequency domain
- subband
- adaptive quantization
- transform domain
- wavelet domain
- vector quantization
- low bit rate
- wavelet transform
- watermark embedding
- additive noise
- discrete cosine transform
- motion estimation
- spread spectrum
- compression algorithm
- reconstructed image
- compressed images
- image watermarking
- dct domain
- progressive transmission
- data hiding
- geometric distortions
- watermarking method
- embedded image
- image processing
- compression ratio
- data embedding
- watermarking algorithm
- cover image
- watermark detection
- filter bank
- denoising
- jpeg compression
- lossless compression
- watermarking scheme
- signal processing
- dct coefficients
- digital watermark
- digital images