Double Compression Detection Based on Markov Model of the First Digits of DCT Coefficients.
Lisha DongXiangwei KongBo WangXingang YouPublished in: ICIG (2011)
Keyphrases
- markov model
- dct coefficients
- jpeg images
- discrete cosine transform
- dct domain
- markov chain
- image compression
- transform domain
- hidden markov models
- statistical model
- compression algorithm
- compressed domain
- feature vectors
- discrete cosine transformation
- markov networks
- compressed images
- compression ratio
- image processing
- event detection
- frequency domain
- search algorithm
- similarity measure