title: How to detect the difference between two 3D point clouds?
body: <p>I have two 3D point clouds using the <a href="http://pointclouds.org/" rel="noreferrer">Point Cloud Library</a>. One which is the reference point cloud(lets call it <strong>A</strong>) and the other one with a deformity(lets call it <strong>B</strong>). Both the point clouds are taken from objects which are somehow with no or very minute features on the surface, except the edges. These point clouds <strong>A</strong> and <strong>B</strong> are also aligned.</p>
  
  <ul>
  <li>I want to know if there is any algorithm which can detect the missing cloud from <strong>B</strong>.</li>
  <li>How to construct a high resolution 3D image of the missing portion of <strong>B</strong>. </li>
  </ul>
  
  <p>Helps are appreciated. </p>