title: Convert OpenCV code to Emgu CV
body: <p>How to convert this C++ OpenCV code to C# Emgu CV code?   </p>
  
  <pre><code>typedef Point3_&lt;double&gt; Point3d;
  typedef DataType&lt;double&gt; Type1;
  typedef Vec&lt;double, 2&gt; Type2;
  typedef Mat_&lt;double&gt; Type3;
  typedef Point_&lt;double&gt; Point2d;
  </code></pre>
  
  <p>Maybe it looks easy, but I could not find <strong>Point3_</strong> in Emgu CV.</p>