Keyphrases
- jpeg images
- data hiding
- information hiding
- palette images
- hidden information
- spatial domain
- error correction
- discrete cosine transform
- color space
- compression algorithm
- spread spectrum
- reversible data hiding
- compressed images
- cover image
- dct coefficients
- secret message
- binary images
- secret data
- lossy compression
- least significant bit
- watermarking technique
- copyright protection
- image compression
- jpeg compression
- frequency domain