using namespace cv;
using namespace std;
using namespace cv::xfeatures2d;
int main()
{
Mat a = imread("C:/Users/zhang/Desktop/77.png", IMREAD_GRAYSCALE); //读取灰度图像
Mat b = imread("C:/Users/zhang/Desktop/76.png", IMREAD_GRAYSCALE);
Ptr<SURF> surf;
surf = SURF::create(800);
BFMatcher matcher;
Mat c, d;
vector<KeyPoint>key1, key2;
vector<DMatch> matches;