Reversible data hiding in JPEG image based on DCT frequency and block selection.
Dongdong HouHaoqian WangWeiming ZhangNenghai YuPublished in: Signal Process. (2018)
Keyphrases
- dct coefficients
- reversible data hiding
- jpeg images
- coded images
- discrete cosine transform
- data hiding
- visual quality
- low frequency
- dct domain
- image compression
- error concealment
- low bit rate
- blocking artifacts
- discrete cosine transformation
- compressed domain
- coding method
- image blocks
- block size
- high frequency
- transform domain
- cover image
- jpeg compression
- spatial domain
- post processing
- high capacity
- compressed images
- feature vectors
- bit rate
- lossy compression
- frequency domain
- compression algorithm
- information hiding
- filter bank
- error correction
- pixel values
- secret data
- jpeg compressed images
- watermarking algorithm