More precisely, the roughness spectrum is the surface's power spectral density; i.e., the Fourier transform of the surface's autocorrelation function. The calculation of the roughness spectra is typically based on the Fast Fourier Transform (FFT) algorithm applied to a regularly-sampled elevation ...
SVMs attempt to distinguish between data classes by constructing separation lines (or planes) that mark the transition from one class to the next. The separation planes are chosen to maximize the distance between data points of various classes. A multiple kernel SVM algorithm is proposed in this ...