A Digital Watermarking Approach Based on DCT Domain Combining QR Code and Chaotic Theory.
Qingbo KangKe LiJichun YangPublished in: CoRR (2014)
Keyphrases
- dct domain
- digital watermarking
- dct coefficients
- spatial domain
- copyright protection
- transform domain
- watermarking algorithm
- digital images
- jpeg compression
- post processing
- human visual system
- spread spectrum
- digital video
- digital content
- compressed domain
- discrete wavelet transform
- low frequency
- compressed images
- discrete cosine transform
- watermarking scheme
- barcode
- image blocks
- reference frame
- high frequency
- pattern recognition
- image processing
- image quality
- signal processing
- motion estimation
- multiscale
- similarity measure