Keyphrases
- data hiding
- digital images
- error correction
- spread spectrum
- spatial domain
- high capacity
- reversible data hiding
- tamper detection
- secret data
- information hiding
- watermarking technique
- data hiding scheme
- black and white
- digital watermarking
- halftone images
- binary images
- secret message
- watermarked image
- embedded image
- image segmentation
- gray scale
- motion estimation