fftlib函数库怎样使用有例子吗，可以替换opencv中dft函数吗？

Yuan Feng3

Other Parts Discussed in Thread: FFTLIB

我想对一个浮点数矩阵做傅里叶变换，

fft_plan_t fft_sp_plan_2d_r2c (
    int   N1,       /* FFT size */
    int   N2,       /* FFT size */
    int   mode,     /* FFT_DIRECT or FFT_ECPY */
    fft_callout_t   fxns
);

int fft_sp_2d_r2c_ecpy (
     /* int N1; FFT size */
    /* int N2; FFT size */
     /* fft_para_mix_bs_t para1; */
     /* fft_para_mix_bs_t para2; */
     /* float *data; input/output pointer */
     /* float *workbuf; working pointer */
     /* float *workbuf_w; working buffer pointer */
     /* float *workbuf_t; working buffer pointer */
     /* float *tw; twiddle pointer */
     /* float *tw_w; twiddle buffer pointer */
     /* float *Bn; Bluestein pointer */
     /* float *Bn_w; Bluestein buffer pointer */
    /* float *workbuf_bn; Bluestein scratch pointer */
     fft_param_u u,
     void *edmaState
 );