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#include <iostream>#include <vector>#include <opencv2/core/core.hpp>#include <opencv2/imgproc/imgproc.hpp>#include <opencv2/highgui/highgui.hpp>#include <opencv2/features2d/features2d.hpp>#include "opencv2/xfeatures2d/nonfree.hpp"using namespace std;using namespace cv;int main(){    Mat image = imread("D:/house.jpg", 0);    vector<KeyPoint> keypoints;    //cv::FastFeatureDetector fast(40);    //fast.detect(image, keypoints);            版本问题这两句不好使，用下面代替    Ptr<FeatureDetector> fast = FastFeatureDetector::create(40);    fast->detect(image, keypoints);    drawKeypoints(image, keypoints, image, Scalar(255, 255, 255), DrawMatchesFlags::DRAW_OVER_OUTIMG);    namedWindow("FAST Features");    imshow("FAST Features", image);    keypoints.clear();    //  cv::SurfFeatureDetector surf(2500);    // Detect the SURF features    //surf.detect(image, keypoints);                //不好使用下面的代替    Ptr<FeatureDetector> surf = xfeatures2d::SurfFeatureDetector::create(2500);    surf->detect(image, keypoints);    cv::Mat featureImage;    cv::drawKeypoints(image, keypoints, featureImage, cv::Scalar(255, 255, 255), cv::DrawMatchesFlags::DRAW_RICH_KEYPOINTS);    // Display the corners    cv::namedWindow("SURF Features");    cv::imshow("SURF Features", featureImage);    waitKey(0);    return 0;}