| OpenCV 4.3.0 Open Source Computer Vision

Exporting a template parameter file

## Goal

In this tutorial you will learn how to

- create a simple parameter file template.

#include <opencv2/core.hpp>
#include <opencv2/stereo.hpp>
using namespace cv;
using namespace std;
int main(int argc, char* argv[])
{
Ptr<stereo::QuasiDenseStereo> stereo = stereo::QuasiDenseStereo::create(cv::Size(5,5));
std::string parameterFileLocation = "./parameters.yaml";
if (argc > 1)
parameterFileLocation = argv[1];
stereo->saveParameters(parameterFileLocation);
return 0;
}

## Explanation:

The class supports loading configuration parameters from a .yaml file using the method `loadParameters()`. This is very useful for fine-tuning the class' parameters on the fly. To extract a template of this parameter file you run the following code.

We create an instance of a `QuasiDenseStereo` object. Not specifying the second argument of the constructor, makes the object to load default parameters.

Ptr<stereo::QuasiDenseStereo> stereo = stereo::QuasiDenseStereo::create(cv::Size(5,5));

By calling the method `saveParameters()`, we store the template file to the location specified by `parameterFileLocation`

std::string parameterFileLocation = "./parameters.yaml";
if (argc > 1)
parameterFileLocation = argv[1];
stereo->saveParameters(parameterFileLocation);