C++ OpenCV图片特征匹配

void OpenCVHandle::pashSurf(std::string fixjpg, std::string armjpg)
{
	Mat image01 = imread(fixjpg, 1);
	Mat image02 = imread(armjpg, 1);
	//提取特征点    
	 
	cv::Ptr<cv::xfeatures2d::SURF> surf = cv::xfeatures2d::SURF::create(); // 海塞矩阵阈值，在这里调整精度，值越大点越少，越精准 
	vector<KeyPoint> keyPoint1, keyPoint2;
	surf->detect(image01, keyPoint1);
	surf->detect(image02, keyPoint2);

	//特征点描述，为下边的特征点匹配做准备    
 
	cv::Ptr<cv::xfeatures2d::SURF> surf2 = cv::xfeatures2d::SURF::create();
	Mat imageDesc1, imageDesc2;
	surf2->compute(image01, keyPoint1, imageDesc1);
	surf2->compute(image02, keyPoint2, imageDesc2);

	FlannBasedMatcher matcher;
	vector<vector<DMatch> > matchePoints;
	vector<DMatch> GoodMatchePoints;

	vector<Mat> train_desc(1, imageDesc1);
	matcher.add(train_desc);
	matcher.train();

	matcher.knnMatch(imageDesc2, matchePoints, 2);
	cout << "total match points: " << matchePoints.size() << endl;

	// Lowe's algorithm,获取优秀匹配点
	for (int i = 0; i < matchePoints.size(); i++)
	{
		if (matchePoints[i][0].distance < 0.39 * matchePoints[i][1].distance)
		{
			GoodMatchePoints.push_back(matchePoints[i][0]);
		}
	}

	Mat first_match;
	drawMatches(image02, keyPoint2, image01, keyPoint1, GoodMatchePoints, first_match);
	imshow("first_match ", first_match);
	waitKey();
}

通过SURF进行特征点提取并进行特征匹配