Optimum retrieval of watermark from wavelet significant coefficients.
M. JayalakshmiShabbir N. MerchantUday B. DesaiPublished in: IET Inf. Secur. (2008)
Keyphrases
- wavelet coefficients
- digital images
- wavelet transform
- information retrieval
- wavelet based image coding
- discrete wavelet transformation
- haar wavelet
- watermarking scheme
- basis functions
- image database
- linear combination
- original signal
- multiresolution
- multiscale
- retrieval systems
- relevance feedback
- wavelet domain
- feature extraction
- information retrieval systems
- singular values
- feature vectors
- transformed image
- image processing