Adaptive watermarking using successive subband quantization and perceptual model based on multiwavelet transform.
Ki-Ryong KwonAhmed H. TewfikPublished in: Security and Watermarking of Multimedia Contents (2002)
Keyphrases
- subband
- filter bank
- transform coefficients
- adaptive wavelet
- subband image coding
- energy compaction
- transform domain
- locally adaptive
- image compression
- subband coding
- perfect reconstruction
- image coding
- image coder
- wavelet packet
- wavelet transform
- scalar quantization
- subband decomposition
- transform coding
- multiresolution
- high frequency
- coding gain
- wavelet coefficients
- lattice vector quantization
- bit rate
- spread spectrum
- wavelet decomposition
- entropy coding
- discrete wavelet transform
- wavelet domain
- feature vectors
- frequency domain
- reconstruction error
- multiscale decomposition
- wavelet filters
- discrete cosine transform
- low frequency
- spatial domain
- low pass
- watermarking scheme
- digital images
- watermark embedding
- computational complexity
- data hiding
- high pass
- quantization scheme
- human visual system
- high quality
- digital watermarking
- rate distortion
- reconstructed image
- watermarking algorithm
- feature extraction
- dct coefficients
- bit allocation