Reversible Data Hiding Using Integer Wavelet Transform and Companding Technique.
Guorong XuanChengyun YangYizhan ZhenYun Q. ShiZhicheng NiPublished in: IWDW (2004)
Keyphrases
- reversible data hiding
- integer wavelet transform
- stego image
- cover image
- data hiding
- high capacity
- lossless compression
- spatial domain
- pixel values
- image coding
- prediction algorithm
- visual quality
- hash functions
- binary images
- secret data
- error correction
- coding method
- lossy compression
- discrete cosine transform
- image authentication
- multiscale
- compression ratio
- filter bank
- image quality
- image data