title: opencv python what kind of array should I pass to setSVMdetector
body: <p>I am trying to use hog+svm in opencv python.</p>
  
  <p>there is a function, setSVMdetector.</p>
  
  <p>When I save a svm and load it to use as a parameter for setSVMdetector, the function gives me an error.</p>
  
  <p>I found that I need to parse data from saved svm file.</p>
  
  <p>There is a question.</p>
  
  <p>I don't have any idea how or which data I should use.</p>
  
  <p>In what format, what data should I use?</p>