寻找一个与英特尔IPP FFT卷积工作示例

Question

只是试图绕我的头围绕IPP现在。有没有人有任何工作C/C + +代码做一个图像的FFT卷积？

Answer 1

Example from here：

/* Sample C-code snipet for Example 1 using Intel® Integrated Performance Primitives (Intel® IPP): */ 

/* allocate and initialize specification structures */ 
ippsFFTInitAlloc_C_32fc(&FFTspec1_p, order, IPP_FFT_DIV_FWD_BY_N, ippAlgHintFast); 
ippsFFTGetBufSize_C_32fc(FFTspec1, &BufSize); 
Buf1_p = (Ipp8u *) ippsMalloc_32sc(BufSize*sizeof(Ipp8u)); 

// ... 

/* compute in-place FFTs of input sequences*/ 
ippsFFTFwd_CToC_32fc_I(x_p, FFTspec1_p, Buf1_p); 
ippsFFTFwd_CToC_32fc_I(y_p, FFTspec1_p, Buf1_p); 

/* perform complex multiplication and inverse FFT*/ 
ippsMul_32fc(x_p, y_p, o_p, veclength); 
ippsFFTInv_CToC_32fc_I(o_p,FFTspec1_p, Buf1_p); 

// ... 

/* free specification structures */ 
ippsFFTFree_C_32fc(FFTSpec1_p); 
ippsFree(Buf1_p); 

Answer 2

我也期待成图像的FFT卷积。我的查询表明，以“ipps”开头的ipp函数是针对信号处理的。以“ippi”开头的Ipp函数针对图像处理。对于一个工作的例子请看第597页的

http://download-software.intel.com/sites/products/documentation/doclib/ipp_sa/71/ipp_manual/ippi.pdf