Keyphrases
- high quality
- data hiding
- fingerprint images
- low quality
- fingerprint identification
- fingerprint recognition
- error correction
- spatial domain
- fingerprint matching
- high capacity
- information hiding
- singular points
- reversible data hiding
- secret data
- image enhancement
- watermarking technique
- data embedding
- gabor filters
- orientation field
- data hiding scheme
- input image
- error diffusion
- facial images