Keyphrases
- information hiding
- data hiding
- hidden information
- secret information
- halftone images
- error correction
- spatial domain
- blue noise
- jpeg images
- gray scale
- error diffusion
- information hiding scheme
- watermarking technique
- black and white
- remote sensing images
- digital images
- lossy compression
- digital watermarking
- jpeg compression
- transform domain
- visual quality