title: What is the OpenCV font base size for cv::HersheyFonts?
body: <p>From <a href="http://docs.opencv.org/2.4/modules/core/doc/drawing_functions.html#puttext" rel="noreferrer">http://docs.opencv.org/2.4/modules/core/doc/drawing_functions.html#puttext</a>:</p>
  
  <blockquote>
    <p>fontScale – Font scale factor that is multiplied by the font-specific
    base size.</p>
  </blockquote>
  
  <p>What is the base size for the hershey fonts? I can't find it anywhere.</p>