Double-encrypted watermarking algorithm based on cosine transform and fractional Fourier transform in invariant wavelet domain.
Yuan-Min LiDeyun WeiLina ZhangPublished in: Inf. Sci. (2021)
Keyphrases
- wavelet domain
- watermarking algorithm
- spatial domain
- log polar
- wavelet coefficients
- denoising
- wavelet transform
- jpeg compression
- multiresolution
- image denoising
- multiscale
- shift invariant
- discrete wavelet transform
- subband
- human visual system
- copyright protection
- high frequency
- transform domain
- digital watermarking
- dct coefficients
- image blocks
- image encryption
- image quality
- frequency domain
- computer vision
- noisy images
- watermarking technique
- higher order
- feature vectors
- pattern recognition
- image processing