Recovering sign bits of DCT coefficients in digital images as an optimization problem.
Ruiyuan LinSheng LiuJun JiangShujun LiChengqing LiC.-C. Jay KuoPublished in: J. Vis. Commun. Image Represent. (2024)
Keyphrases
- digital images
- dct coefficients
- jpeg compression
- jpeg compressed images
- discrete cosine transform
- image blocks
- dct domain
- transform domain
- compressed domain
- jpeg images
- frequency domain
- feature vectors
- multiscale
- cover image
- image compression
- macroblock
- watermarking technique
- copyright protection
- least significant bit
- feature extraction