Question

首先抱歉我的英语不好。

因此，我特别使用密集光流，GunnarFarneback。代码工作正常。这是代码：

    #include "opencv2/highgui.hpp"
    #include "opencv2/imgproc.hpp"
    #include "opencv2/objdetect/objdetect.hpp"
    #include "opencv2/video/tracking.hpp"
    #include <vector>
    #include <iostream>

    using namespace std;
    using namespace cv;

   // Display the results of the matches
     //
   int main(int argc, char** argv)
   {
cv::Mat res, img1, img2, img2Original, img2OriginalC;
cv::VideoWriter writer;

 cv::VideoCapture cap;
//cv::VideoCapture cap("prueba1.mp4");
// cap.open(std::string(argv[1]));
cap.open(0);


cv::namedWindow("cat", cv::WINDOW_AUTOSIZE);
cap >> img1;
cvtColor(img1, img1, COLOR_BGR2GRAY);
double fps = cap.get(cv::CAP_PROP_FPS);
//cv::Size tamano((int)cap.get(cv::CAP_PROP_FRAME_WIDTH),      (int)cap.get(cv::CAP_PROP_FRAME_HEIGHT));
Size S = Size((int) cap.get(CV_CAP_PROP_FRAME_WIDTH),(int) cap.get(CV_CAP_PROP_FRAME_HEIGHT));
writer.open("mouse.avi", CV_FOURCC('M', 'J', 'P', 'G'), fps, S);

for (;;) {
    cap >> img2;
    if (img2.empty()) break;

    img2.copyTo(img2OriginalC);
    cvtColor(img2, img2, COLOR_BGR2GRAY);
    img2.copyTo(img2Original);
    cv::calcOpticalFlowFarneback(img1, img2, res, .4, 1, 12, 2, 8, 1.2, 0);
    for (int y = 0; y < img2.rows; y += 5) {
        for (int x = 0; x < img2.cols; x += 5)
        {
            // get the flow from y, x position * 3 for better visibility
            const Point2f flowatxy = res.at<Point2f>(y, x) * 1;
            // draw line at flow direction
            line(img2OriginalC, Point(x, y), Point(cvRound(x + flowatxy.x), cvRound(y + flowatxy.y)), Scalar(255, 0, 0));
            // draw initial point
            circle(img2OriginalC, Point(x, y), 1, Scalar(0, 0, 0), -1);
        }
    }
    img2Original.copyTo(img1);
    imshow("cat", img2OriginalC);
    writer << img2OriginalC;    

    cout <<"Fps"<<endl;
    cout <<fps<< endl;
    for( int i=3; i>=0; i--)
    {
        //cout<< res << endl;
        //return 0;
    }



    if (cv::waitKey(1) == 27) break;
}
cap.release();
return 0;

}

我想我知道输出矩阵是什么，但我根本不确定。另外，我不知道这些值意味着什么，最后是否有人知道如何使用该输出数据？感谢

什么是OpenCV的密集光流（Farneback）功能的输出？ CPP

0 个答案: