Extract Contours path attributes - opencv

Question

I am currently working on extracting Contours path attributes from a particular image file. I am able to extract Contours using Open CV function findContours() the output look like this
[98, 81][97, 80][95, 80][94, 79][93, 79][92, 78][91, 78][88, 75][87, 75][85, 73][84, 73][83, 72][82, 72]
But my desired output is look like this
M 398.7,106.8 c -5.5,-2.7 -20.7,-4.7 -36.1,-4.6 -15.4,0.1
How can I get it
This is my code:
using namespace cv;
using namespace std;
Mat src_grays;
int threshs = 100;
int max_threshs = 255;
RNG rng(12345);
void thresh_callbacks(int, void* );
void main( )
{
Mat src = imread( "F:/academic/pro4/t/download.jpg" );
imshow("real Image", src);
Mat gray,edge,edges, draw,draws;
Mat samples(src.rows * src.cols, 3, CV_32F);
for( int y = 0; y < src.rows; y++ )
for( int x = 0; x < src.cols; x++ )
for( int z = 0; z < 3; z++)
samples.at<float>(y + x*src.rows, z) = src.at<Vec3b>(y,x)[z];
int clusterCount = 5;
Mat labels;
int attempts = 10;
Mat centers;
kmeans(samples, clusterCount, labels, TermCriteria(CV_TERMCRIT_ITER|CV_TERMCRIT_EPS, 10000, 0.0001), attempts, KMEANS_PP_CENTERS, centers );
Mat new_image( src.size(), src.type() );
for( int y = 0; y < src.rows; y++ )
for( int x = 0; x < src.cols; x++ )
{
int cluster_idx = labels.at<int>(y + x*src.rows,0);
new_image.at<Vec3b>(y,x)[0] = centers.at<float>(cluster_idx, 0);
new_image.at<Vec3b>(y,x)[1] = centers.at<float>(cluster_idx, 1);
new_image.at<Vec3b>(y,x)[2] = centers.at<float>(cluster_idx, 2);
}
imshow( "clustered image", new_image );
char filename[80];
sprintf(filename,"F:/academic/pro4/t/seg.png");
imwrite(filename, new_image);
cvtColor(src, gray, CV_BGR2GRAY);
Canny( new_image, edges, 50, 150, 3);
edges.convertTo(draws, CV_8U);
namedWindow("imageAfterSegmnetation", CV_WINDOW_AUTOSIZE);
imshow("imagesAfterCluster", draws);
cvtColor( new_image, src_grays, CV_BGR2GRAY );
blur( src_grays, src_grays, Size(3,3) );
char* source_window = "Source";
namedWindow( source_window, CV_WINDOW_AUTOSIZE );
imshow( source_window, src );
createTrackbar( " Canny thresh:", "Source", &threshs, max_threshs, thresh_callbacks );
thresh_callbacks( 0, 0 );
waitKey( 0 );
}
void thresh_callbacks(int, void* )
{
Mat canny_output;
vector<vector<Point> > contours;
vector<Vec4i> hierarchy;
/// Detect edges using canny
Canny( src_grays, canny_output, threshs, threshs*2, 3 );
/// Find contours
findContours( canny_output, contours, hierarchy, CV_RETR_TREE, CV_CHAIN_APPROX_SIMPLE, Point(0, 0) );
for(int i= 0; i < contours.size(); i++)
{
for(int j= 0; j < contours[i].size();j++) // run until j < contours[i].size();
{
int a= contours[i][j].x ;
int b =contours[i][j].y ;
// printf("Point(x,y)=" + a, b);
std::cout << contours[i][j] << std::endl;
}
printf ("%i", i + "\n");
}
/// Draw contours
int a=contours.size();
for( int i = 0; i<contours.size(); i++ )
{
Mat drawing_i = Mat::zeros( canny_output.size(), CV_8UC3 );
Scalar color = Scalar( rng.uniform(0, 255), rng.uniform(0,255), rng.uniform(0,255) );
drawContours( drawing_i, contours, i, color, 2, 8, hierarchy, 0, Point() );
namedWindow( "Contours_i", CV_WINDOW_AUTOSIZE );
imshow( "Contours_i", drawing_i );
}
}
Note:
I need Contours path, that mean how to contours connected for example it can be M = moveto L = lineto H = horizontal lineto V = vertical lineto C = curveto S = smooth curveto Q = quadratic Bézier curve T = smooth quadratic Bézier curveto A = elliptical Arc Z = closepath just like SVG path