title: Python implementation of the laplacian of gaussian edge detection
body: <p>I am looking for the equivalent implementation of the laplacian of gaussian edge detection. </p>
  
  <p>In matlab we use the following function</p>
  
  <pre><code>   [BW,threshold] = edge(I,'log',...)
  </code></pre>
  
  <p>In python there exist a function for calculating the laplacian of gaussian. It is not giving the edges back definitely.</p>
  
  <pre><code>  scipy.ndimage.filters.gaussian_laplace
  </code></pre>
  
  <p>Any pointer to online implementation or the code</p>
  
  <p>Thanks</p>