Keyphrases
- spatial domain
- secret message
- progressive transmission
- image compression
- frequency domain
- data hiding
- transform domain
- wavelet domain
- motion estimation
- subband
- cover image
- information hiding
- discrete cosine transformation
- data embedding
- dct domain
- secret data
- vector quantization
- log polar
- discrete cosine transform
- compressed images
- wavelet transform
- compression ratio
- jpeg images
- low bit rate
- video coder
- spread spectrum
- reversible data hiding
- embedded image
- reconstructed image
- image authentication
- compression algorithm
- filter bank
- watermarking technique