Print protection using high-frequency fractal noise.
Khaled W. MahmoudJonathan M. BlackledgeSekharjit DattaJames A. FlintPublished in: Security, Steganography, and Watermarking of Multimedia Contents (2004)
Keyphrases
- high frequency
- low frequency
- high frequencies
- visual quality
- wavelet transform
- high resolution
- image compression
- subband
- high frequency components
- wavelet coefficients
- low pass
- discrete wavelet transform
- frequency band
- frequency domain
- noise model
- low and high frequency
- wavelet decomposition
- fractal dimension
- computer vision
- multi resolution analysis
- phase shifting
- super resolution