title: Color space conversion from YCbCr to RGB using PIL library?
body: <p>How to do the following using python PIL library</p>
  
  <ul>
  <li>Converting from rgb to YCrCb and vice versa   </li>
  <li>Creating images out of numpy arrays                        </li>
  <li>Merging y, cr , cb component back into ycrcb image </li>
  </ul>