First quantization matrix estimation for double compressed JPEG images utilizing novel DCT histogram selection strategy.
Nandita DalmiaManish OkadePublished in: ICVGIP (2016)
Keyphrases
- jpeg images
- selection strategy
- quantization table
- file size
- discrete cosine transform
- dct coefficients
- compressed domain
- discrete cosine transformation
- compressed images
- compression algorithm
- jpeg compression
- spatial domain
- selection algorithm
- data hiding
- dct domain
- genetic algorithm
- fitness function
- lossy compression
- wireless channels
- transform domain
- bit rate
- image compression