Robust image watermarking in DCT domain using optimal inter-block difference.
Anis KrichaZied KrichaAnis SaklyPublished in: Concurr. Comput. Pract. Exp. (2023)
Keyphrases
- dct domain
- dct coefficients
- robust image watermarking
- image blocks
- discrete cosine transform
- transform domain
- post processing
- blocking artifacts
- spatial domain
- human visual system
- compressed images
- jpeg images
- quantization step
- low pass filtering
- digital video
- low frequency
- block boundaries
- multiscale
- video transcoding
- image resizing
- jpeg compression
- block matching
- preprocessing
- feature extraction
- reference frame
- wavelet domain