title: Generic Descriptor Matcher function OPENCV
body: <p>I would like to have a simple question for you but it was too hard to get for me so far. 
  My question is:</p>
  
  <p>There is a function in opencv svn called GenericDescriptorMatcher();</p>
  
  <pre><code>Ptr&lt;GenericDescriptorMatcher&gt; gdm = new VectorDescriptorMatcher( descriptorExtractor, descriptorMatcher );
  </code></pre>
  
  <p>I want to get an explanation about it but in a simple way, What it should be the </p>
  
  <blockquote>
    <p>descriptorExtractor </p>
  </blockquote>
  
  <p>and What it should be </p>
  
  <blockquote>
    <p>descriptorMatcher</p>
  </blockquote>
  
  <p>For God sake, for many days i'm working on this function and still don't know how to use it, so please if you have an experience with it, try to explain it in very simple way.</p>
  
  <p>Thank you  </p>