Tamper detection technique for document images using zero watermarking in wavelet domain.
Balkar SinghMahesh Kumar SharmaPublished in: Comput. Electr. Eng. (2021)
Keyphrases
- document images
- wavelet domain
- image authentication
- watermarking algorithm
- watermark embedding
- jpeg compression
- discrete wavelet transform
- spatial domain
- denoising
- wavelet coefficients
- digital watermarking
- wavelet transform
- multiscale
- copyright protection
- human visual system
- multiresolution
- image denoising
- subband
- image watermarking
- data hiding
- wavelet decomposition
- spread spectrum
- watermarking scheme
- public key
- high frequency
- lossy compression
- watermarking technique
- transform domain
- dct coefficients
- image content
- frequency domain
- image processing
- low frequency
- additive noise
- image quality
- video sequences
- high quality