title: Fastest Gaussian blur implementation
body: <p>How do you implement the fastest possible <a href="http://en.wikipedia.org/wiki/Gaussian_blur" rel="noreferrer">Gaussian blur</a> algorithm?</p>
  
  <p>I am going to implement it in Java, so <a href="http://en.wikipedia.org/wiki/Graphics_processing_unit" rel="noreferrer">GPU</a> solutions are ruled out. My application, <a href="http://planetGenesis.sourceforge.net" rel="noreferrer">planetGenesis</a>, is cross platform, so I don't want <a href="http://en.wikipedia.org/wiki/Java_Native_Interface" rel="noreferrer">JNI</a>.</p>