Color Image Encryption Using Angular Graph Fourier Transform.
Liuqing YangWei MengXudong ZhaoPublished in: Int. J. Digit. Crime Forensics (2021)
Keyphrases
- fourier transform
- color images
- fourier domain
- frequency domain
- signal processing
- color space
- radon transform
- frequency spectrum
- fourier analysis
- fast fourier transform
- polar coordinates
- power spectral density
- fourier coefficients
- phase difference
- discrete fourier transform
- fourier descriptors
- color information
- log polar
- feature extraction