A robust image watermarking scheme in DCT domain based on adaptive texture direction quantization.
Han FangHang ZhouZehua MaWeiming ZhangNenghai YuPublished in: Multim. Tools Appl. (2019)
Keyphrases
- dct domain
- quantization step
- image watermarking scheme
- jpeg compression
- watermark detection
- watermarking scheme
- spatial domain
- dct coefficients
- image watermarking
- post processing
- human visual system
- wavelet domain
- discrete cosine transform
- transform domain
- watermark embedding
- digital watermark
- geometric distortions
- compressed domain
- digital video
- compressed images
- spread spectrum
- watermarking algorithm
- low frequency
- digital images
- computational complexity
- image blocks
- copyright protection
- feature extraction
- gray level