A color watermarking scheme in frequency domain based on quaternary coding.
Decheng LiuQingtang SuZihan YuanXueting ZhangPublished in: Vis. Comput. (2021)
Keyphrases
- frequency domain
- watermarking scheme
- spatial domain
- fourier transform
- digital watermarking
- jpeg compression
- color images
- error diffusion
- denoising
- cross correlation
- subband
- error correction
- copyright protection
- feature extraction
- image authentication
- spread spectrum
- low frequency
- coding scheme
- watermarking algorithm
- watermarked image
- digital watermark
- low pass
- transform domain
- watermarking technique
- geometric distortions
- dct coefficients
- wavelet domain
- filter bank
- digital images
- discrete cosine transform
- gray scale
- non stationary
- watermark detection