Opencv中sift特征提取与匹配代码

<pre name="code" class="cpp">#include<iostream>#include<opencv2\opencv.hpp>#include<opencv2\nonfree\nonfree.hpp>using namespace std;using namespace cv;int main(int argc,char* argv[]){//图像读取Mat img1,img2;img1=imread("1.jpg",CV_WINDOW_AUTOSIZE);img2=imread("245.jpg",CV_WINDOW_AUTOSIZE);//sift特征提取SiftFeatureDetector detector;vector<KeyPoint> keyPoint1,keyPoint2;detector.detect(img1,keyPoint1);detector.detect(img2,keyPoint2);cout<<"Number of KeyPoint1:"<<keyPoint1.size()<<endl;cout<<"Number of KeyPoint2:"<<keyPoint2.size()<<endl;//sift特征描述子计算SiftDescriptorExtractor desExtractor;Mat des1,des2;desExtractor.compute(img1,keyPoint1,des1);desExtractor.compute(img2,keyPoint2,des2);//sift特征点(描述子)匹配BFMatcher matcher(NORM_L2);vector<DMatch> matches;matcher.match(des1,des2,matches);Mat img_match;drawMatches(img1,keyPoint1,img2,keyPoint2,matches,img_match);imshow("img_match",img_match);waitKey(0);return 0;}