title: Conversion between cv::Mat and arma::mat
body: <p>I am using OpenCV and also want to add some of cool functions from <a href="http://www.mlpack.org" rel="nofollow noreferrer">mlpack</a>, which is using <a href="http://arma.sourceforge.net/docs.html" rel="nofollow noreferrer">Armadillo</a> matrices.</p>
  
  <p>Is there an easy way to convet between cv::Mat and arms::mat?</p>
  
  <p>Thanks!</p>