I want to write some data into a .txt file using c++ / opencv

Question

I want to save some information about every frame in a video to a .txt file.

The information could be like the current frame number, the position of the feature points etc,

I could only find ways to write it into a XML/YML file. Is it possible to write these into a .txt file? IF so, how ?

Thanks in advance!

Answer 1

you have to roll on your own implementation. The basic of c++ file streams are

#include <iostream>
#include <fstream>

using namespace std;

void writeSomething()
{
    ofstream outputfile;
    outputfile.open("data.txt");
    for (int i=0; i<10;i++)
        outputfile << i << endl;
}

Your question is not very clear, so you'd better edit it to be clear about what you exactly want to do.