title: Fastest method in inverse of matrix
body: <p>I want to process Images with Inverse function and lot of functions. For code to run fastly can any one suggest fast method among the 3 inversion methods ?</p>
  
  <pre><code>double cvInvert(const CvArr* src, CvArr* dst, int method=CV_LU)
  </code></pre>
  
  <ul>
  <li>CV_LU Gaussian elimination with optimal pivot element chosen</li>
  <li>CV_SVD Singular value decomposition (SVD) method</li>
  <li>CV_SVD_SYM SVD method for a symmetric positively-defined matrix.</li>
  </ul>