Hybrid dictionary learning for JPEG steganalysis.
Zhihao XuYanqing GuoJun GuoXiangwei KongPublished in: APSIPA (2015)
Keyphrases
- dictionary learning
- jpeg images
- sparse representation
- sparse coding
- discrete cosine transform
- bit plane
- image compression
- object category recognition
- image representation
- dct coefficients
- group sparsity
- sparse codes
- compressed images
- compression algorithm
- lossy compression
- spatial domain
- compression ratio
- computer vision
- dictionary learning for sparse
- linear combination
- higher order
- small number
- high quality
- face recognition