title: Using fuzz parameter with perlmagick in compare api
body: <p>I am trying to use perlmagick to compare 2 images. It works perfectly fine for most of the cases, but if there is slight difference in pixels then it is counted as error.
  If I use compare command provided by ImageMagick then I can specify fuzz parameter which will treat pixels in the given distance as same.</p>
  
  <p>I tried using fuzz option in compare api as suggested in documentation but it's not working.
  <a href="http://www.imagemagick.org/script/perl-magick.php" rel="nofollow">http://www.imagemagick.org/script/perl-magick.php</a></p>
  
  <p><code>$Difference = $orgImage-&gt;Compare(
                  image   =&gt; $secondImage,
                  metric  =&gt; 'RMSE',
                  fuzz =&gt; '100',
                  channel =&gt; 'ALL'
                  );</code></p>
  
  <p>Thanks !</p>