code: def reconstructImage(self):
          '''
          do inverse Fourier transform and return result
          '''
          f_ishift = np.fft.ifftshift(self.fshift)
          return np.real(np.fft.ifft2(f_ishift)f reconstructImage(self):
          '''
          do inverse Fourier transform and return result
          '''
          f_ishift = np.fft.ifftshift(self.fshift)
          return np.real(np.fft.ifft2(f_ishift))
docs: do inverse Fourier transform and return result