Keyphrases
- dct coefficients
- discrete cosine transform
- transform domain
- dct domain
- jpeg images
- jpeg compression
- compressed domain
- feature vectors
- watermarking algorithm
- discrete cosine transformation
- low frequency
- search algorithm
- image compression
- image blocks
- signal processing
- digital images
- computational complexity
- pattern recognition
- data structure
- blocking artifacts
- high quality
- multimedia