A Hybrid Approach of DWT and DCT for Rational Dither Modulation Watermarking.
Jinhua LiuKun ShePublished in: Circuits Syst. Signal Process. (2012)
Keyphrases
- quantization index modulation
- data hiding
- jpeg compression
- dct coefficients
- spatial domain
- jpeg images
- discrete cosine transform
- digital watermark
- dct domain
- transform domain
- discrete wavelet transform
- error correction
- image watermarking
- spread spectrum
- watermarking technique
- quantization step
- bit error rate
- watermark detection
- watermarking algorithm
- information hiding
- image authentication
- digital watermarking
- wavelet domain
- lossy compression
- compressed domain
- watermarked image
- frequency domain
- digital images
- watermarking scheme
- copyright protection
- image compression
- additive noise
- filter bank
- watermarking method
- image blocks
- computer simulation
- geometric attacks
- digital content