Keyphrases
- digital images
- fourier transform
- chaotic sequence
- frequency domain
- signal processing
- digital camera
- fourier domain
- radon transform
- encryption scheme
- fast fourier transform
- discrete fourier transform
- forgery detection
- spatial domain
- jpeg compression
- secret key
- fourier coefficients
- black and white
- key management
- image processing
- pattern recognition
- similarity measure