Statistical image watermark decoder using high-order difference coefficients and bounded generalized Gaussian mixtures-based HMT.
Xiang-Yang WangXin ShenJia-Lin TianPan-Pan NiuHong-Ying YangPublished in: Signal Process. (2022)
Keyphrases
- high order
- gaussian mixture
- digital images
- em algorithm
- higher order
- discrete wavelet transformation
- image data
- multiscale
- watermarked image
- input image
- noisy images
- watermarking technique
- edge detection
- expectation maximization
- pixel values
- image segmentation
- image classification
- singular values
- pairwise
- bayesian framework
- similarity measure
- wavelet domain
- probability density function
- face recognition
- maximum likelihood
- feature extraction
- digital watermarking
- probabilistic model
- markov random field
- statistical methods
- frequency domain
- image representation
- image quality