A Gray Level Watermarking Algorithm Using Double Layer Hidden Approach.
Shih-Chang HsiaI-Chang JouShing-Ming HwangPublished in: IEICE Trans. Fundam. Electron. Commun. Comput. Sci. (2002)
Keyphrases
- gray level
- watermarking algorithm
- jpeg compression
- signal processing
- image watermarking
- gray scale
- texture analysis
- watermarking scheme
- digital watermarking
- copyright protection
- wavelet domain
- pixel values
- spread spectrum
- gray level images
- co occurrence
- low contrast
- input image
- dct coefficients
- black and white
- image segmentation
- lossy compression
- gray value
- texture features
- watermarking technique
- contrast enhancement
- run length
- multiscale
- geometric attacks
- digital image watermarking
- image processing