OpenCV2.4.4实现Shi-Tomasi角点检测(goodFeaturesToTrack)

#include "opencv2/highgui/highgui.hpp"#include "opencv2/imgproc/imgproc.hpp"#include <iostream>#include <stdio.h>#include <stdlib.h>using namespace cv;using namespace std;//全局变量Mat src1, src1_gray,    src2, src2_gray;int maxCorners = 23;int maxTrackbar = 100;char* source_window1 = "src1";char* source_window2 = "src2";void goodFeaturesToTrack_Demo( int, void* ){    //参数初始化    if(maxCorners < 1)//允许返回的最多角点个数        maxCorners = 1;    vector<Point2f> corners1,corners2;//角点容器    double qualityLevel = 0.01;//最小特征值小于qualityLevel*最大特征值的点将被忽略    double minDistance = 10;//两角点间最小距离    int blockSize = 3;//邻域尺寸    bool useHarrisDetector = false;//是否使用Harris    double k = 0.04;    //拷贝原图    Mat src1_copy = src1.clone();    Mat src2_copy = src2.clone();    //调用函数进行Shi-Tomasi角点检测    goodFeaturesToTrack( src1_gray,                         corners1,                         maxCorners,                         qualityLevel,                         minDistance,                         Mat(),                         blockSize,                         useHarrisDetector,                         k );    goodFeaturesToTrack( src2_gray,                         corners2,                         maxCorners,                         qualityLevel,                         minDistance,                         Mat(),                         blockSize,                         useHarrisDetector,                         k );    //画出角点    cout<<"角点个数："<<corners1.size()<<endl;//等于maxCorners    for( int i = 0; i < corners1.size(); i++ )    {        circle( src1_copy, corners1[i], 4, Scalar(0,255,0),2);        circle( src2_copy, corners2[i], 4, Scalar(0,255,0),2);    }    //显示图像    imshow( source_window1, src1_copy );    imshow( source_window2, src2_copy );}int main(){    //加载源图并转换为灰度图    src1 = imread("horse1.jpg");    src2 = imread("horse2.jpg");    cvtColor( src1, src1_gray, CV_BGR2GRAY );    cvtColor( src2, src2_gray, CV_BGR2GRAY );    //创建窗口    namedWindow( source_window1, CV_WINDOW_AUTOSIZE );    namedWindow( source_window2, CV_WINDOW_AUTOSIZE );    //创建滑块条，调节允许的角点个数    createTrackbar( "角点个数:", source_window1, &maxCorners, maxTrackbar, goodFeaturesToTrack_Demo );    goodFeaturesToTrack_Demo( 0, 0 );    waitKey(0);    return(0);}

效果图：