A digital watermarking approach based on DCT domain combining QR code and chaotic theory.
Qingbo KangKe LiJichun YangPublished in: WOCN (2014)
Keyphrases
- dct domain
- digital watermarking
- dct coefficients
- jpeg compression
- transform domain
- spatial domain
- copyright protection
- watermarking algorithm
- post processing
- watermarking scheme
- discrete wavelet transform
- digital images
- compressed images
- human visual system
- discrete cosine transform
- digital video
- compressed domain
- spread spectrum
- low frequency
- watermarking technique
- jpeg images
- digital content
- high frequency
- wavelet domain
- image restoration