opencv学习实例代码3-9

// This file is part of OpenCV project.
// It is subject to the license terms in the LICENSE file found in the top-level directory
// of this distribution and at http://opencv.org/license.html

#include <opencv2/objdetect.hpp>
#include <opencv2/highgui.hpp>
#include <opencv2/imgproc.hpp>
#include <opencv2/videoio.hpp>
#include <iostream>
#include <iomanip>
#include <opencv2/opencv.hpp>
#include <vector>
using namespace cv;
using namespace std;

int main(int argc, char** argv)
{
    system("color F0");
    float a[12]={1,2,3,4,5,10,6,7,8,9,10,0};
    Mat img=Mat(3,4,CV_32FC1,a);
    Mat imgs=Mat(2,3,CV_32FC2,a);
    double minVal,maxVal;
    Point minIdx,maxIdx;
    minMaxLoc(img,&minVal,&maxVal,&minIdx,&maxIdx);
    cout<<minVal<<"--"<<maxVal<<endl;
    cout<<minIdx<<"--"<<maxIdx<<endl;


    Mat imgs_re=imgs.reshape(1,4);
    minMaxLoc(imgs_re,&minVal,&maxVal,&minIdx,&maxIdx);
    cout<<minVal<<"--"<<maxVal<<endl;
    cout<<minIdx<<"--"<<maxIdx<<endl;
    return 0;
}

执行结果：