How to get extra information of blobs with SimpleBlobDetector?

Question

@robot_sherrick answered me this question, this is a follow-up question for his answer.

cv::SimpleBlobDetector in Opencv 2.4 looks very exciting but I am no

Answer 1

//Access SimpleBlobDetector datas for video

#include "opencv2/imgproc/imgproc.hpp" // 
#include "opencv2/highgui/highgui.hpp"

    #include 
    #include 
    #include 
    #include 
    #include 
    #include 
    #include 

#include "opencv2/objdetect/objdetect.hpp"
#include "opencv2/features2d/features2d.hpp"


using namespace cv;
using namespace std;


int main(int argc, char *argv[])
{


    const char* fileName ="C:/Users/DAGLI/Desktop/videos/new/m3.avi";  
    VideoCapture cap(fileName); //
    if(!cap.isOpened()) //
    {
        cout << "Couldn't open Video  " << fileName << "\n"; 
        return -1; 
    }
    for(;;)  // videonun frameleri icin sonsuz dongu
    {
        Mat frame,labelImg; 
        cap >> frame; 
        if(frame.empty()) break;  
        //imshow("main",frame);  

        Mat frame_gray;
        cvtColor(frame,frame_gray,CV_RGB2GRAY);


        //////////////////////////////////////////////////////////////////////////
        // convert binary_image
        Mat binaryx;
        threshold(frame_gray,binaryx,120,255,CV_THRESH_BINARY);


        Mat src, gray, thresh, binary;
        Mat out;
        vector keyPoints;

        SimpleBlobDetector::Params params;
        params.minThreshold = 120;
        params.maxThreshold = 255;
        params.thresholdStep = 100;

        params.minArea = 20; 
        params.minConvexity = 0.3;
        params.minInertiaRatio = 0.01;

        params.maxArea = 1000;
        params.maxConvexity = 10;

        params.filterByColor = false;
        params.filterByCircularity = false;



        src = binaryx.clone();

        SimpleBlobDetector blobDetector( params );
        blobDetector.create("SimpleBlob");



        blobDetector.detect( src, keyPoints );
        drawKeypoints( src, keyPoints, out, CV_RGB(255,0,0), DrawMatchesFlags::DEFAULT);


        cv::Mat blobImg;    
        cv::drawKeypoints(frame, keyPoints, blobImg);
        cv::imshow("Blobs", blobImg);

        for(int i=0; i