C++和opencv配置后的测试代码,通用提取2张图片特征来连线，这个代码只是用来测试c++和opencv配置了成功与否，opencv是3.x版本的，一般要经过Cmake后才有这个功能（在contrib中）
折叠C/C++ Code复制内容到剪贴板
- #include<opencv2/features2d/features2d.hpp>
- #include<opencv2/opencv.hpp>
- #include<opencv2/highgui/highgui.hpp>
- #include<opencv2/xfeatures2d/nonfree.hpp>
- #include<opencv2/core/core.hpp>
- #include<iostream>
- using namespace std;
- using namespace cv;
- using namespace cv::xfeatures2d;
- int main()
- {
- Mat srcImage1 = imread("1.jpg", 1);
- Mat srcImage2 = imread("2.jpg", 1);
- if (!srcImage1.data || !srcImage2.data)
- {
- cout << "读取图片出错" << endl;
- return false;
- }
- imshow("原始图1", srcImage1);
- imshow("原始图2", srcImage2);
- int minHessian = 100;
- Ptr<SurfFeatureDetector> detector = SurfFeatureDetector::create(minHessian);
- vector<cv::KeyPoint> key_points_1, key_points_2;
- Mat dstImage1, dstImage2;
- detector->detectAndCompute(srcImage1, Mat(), key_points_1, dstImage1);
- detector->detectAndCompute(srcImage2, Mat(), key_points_2, dstImage2);//可以分成detect和compute
- Mat img_keypoints_1, img_keypoints_2;
- drawKeypoints(srcImage1, key_points_1, img_keypoints_1, Scalar::all(-1), DrawMatchesFlags::DEFAULT);
- drawKeypoints(srcImage2, key_points_2, img_keypoints_2, Scalar::all(-1), DrawMatchesFlags::DEFAULT);
- Ptr<DescriptorMatcher> matcher = DescriptorMatcher::create("FlannBased");
- vector<DMatch>mach;
- matcher->match(dstImage1, dstImage2, mach);
- double Max_dist = 0;
- double Min_dist = 100;
- for (int i = 0; i < dstImage1.rows; i++)
- {
- double dist = mach[i].distance;
- if (dist < Min_dist)Min_dist = dist;
- if (dist > Max_dist)Max_dist = dist;
- }
- cout << "最短距离" << Min_dist << endl;
- cout << "最长距离" << Max_dist << endl;
- vector<DMatch>goodmaches;
- for (int i = 0; i < dstImage1.rows; i++)
- {
- if (mach[i].distance < 2 * Min_dist)
- goodmaches.push_back(mach[i]);
- }
- Mat img_maches;
- drawMatches(srcImage1, key_points_1, srcImage2, key_points_2, goodmaches, img_maches);
- for (int i = 0; i < goodmaches.size(); i++)
- {
- cout << "符合条件的匹配：" << goodmaches[i].queryIdx << "--" << goodmaches[i].trainIdx << endl;
- }
- imshow("效果图1", img_keypoints_1);
- imshow("效果图2", img_keypoints_2);
- imshow("匹配效果", img_maches);
- waitKey(0);
- return 0;
- }
效果图：
