A Novel Image Steganography Based on Contourlet Transform and Hill Cipher.
Shuliang SunYongning GuoPublished in: J. Inf. Hiding Multim. Signal Process. (2015)
Keyphrases
- contourlet transform
- multiscale
- directional filter banks
- subband
- image denoising
- multiresolution
- image fusion
- discrete wavelet transform
- texture images
- image representation
- nonsubsampled contourlet transform
- translation invariant
- high frequency
- low frequency
- fusion method
- wavelet transform
- denoising
- wavelet coefficients
- wavelet domain
- multi sensor
- natural images
- feature vectors
- filter bank
- high quality
- texture classification
- image compression