fftImg                package:rimage                R Documentation

_C_o_m_p_u_t_e _F_F_T _i_m_a_g_e

_D_e_s_c_r_i_p_t_i_o_n:

     This function computates the power spectrum of a given image by
     FFT.

_U_s_a_g_e:

     fftImg(img)

_A_r_g_u_m_e_n_t_s:

     img: target image

_V_a_l_u_e:

     an imagematrix

_R_e_f_e_r_e_n_c_e_s:

     FFTW (Fastest Fourier Transform in the West) <URL:
     http://www.fftw.org>

_S_e_e _A_l_s_o:

     'fftw','imagematrix'

_E_x_a_m_p_l_e_s:

       data(logo)
       plot(normalize(fftImg(logo)))

