cvDCT in openCV

Question

i was wondering how to use cvDCT void in opencv c++

if anyone have an example

Answer 1

该手册说明了参数和功能的内部原理。

Answer 2

You can use the following code:

IplImage* src0 = cvLoadImage(strPath, CV_LOAD_IMAGE_GRAYSCALE);
IplImage* src = cvCreateImage(cvGetSize(src0), IPL_DEPTH_32F, 1);
cvConvert(src0, src);
IplImage* dst = cvCreateImage(cvGetSize(src0), IPL_DEPTH_32F, 1);

cvDCT(src, dst, 0);
//cvDCT (dst, src, 1);
//cvConvert(src, src0);
cvShowImage("Source", src0);