Keyphrases
- fourier transform
- fourier domain
- frequency domain
- phase difference
- signal processing
- radon transform
- correlation function
- power spectral density
- computational complexity
- spatial domain
- polar coordinates
- fast fourier transform
- discrete fourier transform
- log polar
- feature extraction
- fourier coefficients
- fourier descriptors
- frequency spectrum
- image data
- pattern recognition
- multiscale