code understanding 

Hi @ahmetozlu 
I am trying to understand this code.but i didn't getting that for what below lines are exactly used.

int intHorizontalLinePosition = (int)std::round((double)cameraFrame1.rows * 0.35);
intHorizontalLinePosition = intHorizontalLinePosition*1.40;
intVerticalLinePosition = (int)std::round((double)cameraFrame1.cols * 0.35);

thanks.