OpenCV图像匹配算法之surf详解编程语言

    //surf.cpp   
    #include "stdafx.h"   
    #include <cv.hpp>   
    #include <highgui.h>   
    #include "utils.h"   
    #include <iostream>   
    using namespace std;   
       
    void surf(char* path1, char* path2, INFO& info, bool show)   
    {   
        double t1,t2;   
        t1=cvGetTickCount();   
       
        initModule_nonfree();   
       
        Mat img1, img2;   
        img1=imread(path1,0);   
        img2=imread(path2,0);   
        if(img1.data==NULL)   
        {   
            cout<<"The image can not been loaded: "<<path1<<endl;   
            system("pause");   
            exit(-1);   
        }   
        if(img2.data==NULL)   
        {   
            cout<<"The image can not been loaded: "<<path2<<endl;   
            system("pause");   
            exit(-1);   
        }   
       
        int minHessian=200;   
        SurfFeatureDetector surf_detector(minHessian) ;   
        SurfDescriptorExtractor surf_descriptor ;     
        vector<KeyPoint> kpts1_surf, kpts2_surf;   
        Mat desc1_surf, desc2_surf;   
        Ptr<cv::DescriptorMatcher> matcher_l2 = DescriptorMatcher::create("BruteForce");          //欧氏距离匹配   
        vector<vector<DMatch> > dmatches_surf;   
        vector<Point2f> matches_surf, inliers_surf;   
           
        surf_detector.detect(img1,kpts1_surf);   
        surf_detector.detect(img2,kpts2_surf);   
        info.n1 = kpts1_surf.size();   
        info.n2 = kpts2_surf.size();   
       
        surf_descriptor.compute(img1,kpts1_surf,desc1_surf);   
        surf_descriptor.compute(img2,kpts2_surf,desc2_surf);   
        matcher_l2->knnMatch(desc1_surf,desc2_surf,dmatches_surf,2);   
        matches2points_nndr(kpts1_surf,kpts2_surf,dmatches_surf,matches_surf,DRATIO);   
        info.m=matches_surf.size()/2;   
        compute_inliers_ransac(matches_surf,inliers_surf,MIN_H_ERROR,false);   
        info.rm=inliers_surf.size()/2;   
       
        t2=cvGetTickCount();   
        info.t=(t2-t1)/1000000.0/cvGetTickFrequency();   
       
        Mat img1_rgb_surf = imread(path1,1);   
        Mat img2_rgb_surf = imread(path2,1);   
        Mat img_com_surf = Mat(Size(img1.cols*2,img1.rows),CV_8UC3);   
       
        if(show == true)   
        {   
            draw_inliers(img1_rgb_surf,img2_rgb_surf,img_com_surf,inliers_surf,2);   
            imshow("surf",img_com_surf);   
            waitKey(0);   
        }   
       
        return;   
    }  

使用

    INFO surf_info;   
    surf(path1,path2,surf_info,false);   
    showInfo(surf_info);