OpenCV C vs C++

我正在尝试使用SURF，但我在C语言中找不到方法时遇到了问题。文档中似乎只有C++的东西。OpenCV C vs C++

我已经能够检测SURF特征：

IplImage *img = cvLoadImage("img5.jpg"); 

    CvMat* image = cvCreateMat(img->height, img->width, CV_8UC1); 
    cvCvtColor(img, image, CV_BGR2GRAY); 

    // detecting keypoints 
    CvSeq *imageKeypoints = 0, *imageDescriptors = 0; 
    int i; 

    //Extract SURF points by initializing parameters 
    CvSURFParams params = cvSURFParams(1, 1); 
    cvExtractSURF(image, 0, &imageKeypoints, &imageDescriptors, storage, params); 
    printf("Image Descriptors: %d\n", imageDescriptors->total); 

    //draw the keypoints on the captured frame 
    for(i = 0; i < imageKeypoints->total; i++) 
    { 
     CvSURFPoint* r = (CvSURFPoint*)cvGetSeqElem(imageKeypoints, i); 
     CvPoint center; 
     int radius; 
     center.x = cvRound(r->pt.x); 
     center.y = cvRound(r->pt.y); 
     radius = cvRound(r->size*1.2/9.*2); 
     cvCircle(image, center, radius, CV_RGB(0,255,0), 1, 8, 0); 
    }

但我无法找到我需要的描述符比较2个图像的方法。我发现在C本++编写代码，但我有麻烦它翻译：

// matching descriptors 
    BruteForceMatcher<L2<float> > matcher; 
    vector<DMatch> matches; 
    matcher.match(descriptors1, descriptors2, matches); 

    // drawing the results 
    namedWindow("matches", 1); 
    Mat img_matches; 
    drawMatches(img1, keypoints1, img2, keypoints2, matches, img_matches); 
    imshow("matches", img_matches); 
    waitKey(0);

我将不胜感激，如果有人可以带我到一个描述符匹配，甚至更好，让我知道在哪里可以找到OpenCV的文档只有C。

来源

2012-04-23 Chet