Visible Watermarking for Halftone Images.
Jeng-Shyang PanHao LuoZhe-Ming LuPublished in: IEICE Trans. Fundam. Electron. Commun. Comput. Sci. (2007)
Keyphrases
- halftone images
- inverse halftoning
- gray scale
- error diffusion
- data hiding
- black and white
- high capacity
- image quality
- original images
- continuous tone images
- perceptual quality
- visual quality
- least mean square
- gray scale images
- frequency domain
- gray level
- digital images
- gray images
- feature selection
- human visual system