Passive steganalysis based on higher order image statistics of curvelet transform.
S. GeethaSiva S. Sivatha SindhuN. KamarajPublished in: Int. J. Autom. Comput. (2010)
Keyphrases
- image statistics
- curvelet transform
- higher order
- natural images
- wavelet transform
- hierarchical representation
- feature set
- multiscale
- image patches
- fusion method
- sparse coding
- spatial domain
- palmprint
- pairwise
- contrast enhancement
- object recognition
- enhanced image
- test images
- denoising
- image data
- wavelet coefficients
- facial features
- high frequency
- feature selection
- multiresolution
- similarity measure
- feature extraction