System object: vision.FFT
Compute 2D discrete Fourier transform of input
Y = step(H,X)
Starting in R2016b, instead of using the
step method to perform the operation defined by the System
object™, you can call the object with arguments, as if it were a function. For example,
y = step(obj,x) and
y = obj(x) perform equivalent operations.
Y = step(H,X) computes
the 2D discrete Fourier transform (DFT),
of an M-by-N input matrix
where the values of M and N are
integer powers of two.