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DFT ( Discrete Fourier Transform )

Definition

  • DFT $ X(k) = \sum{x(n)*exp(-j2pikn/N) dn } k = 0, 1, 2, ..., N-1 $
  • Inverse DFT (IDFT) $ x[n] = (1/N)\sum{X(k)*exp(j2pikn/N) dk } n = 0, 1, 2, ..., N-1 $
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Sees the importance of signal filtering in medical imaging

Dhruv Lamba, BSEE2010