And she beats the purpose instantly by adding this to the readme:<p><pre><code>    they code is pretty rough &amp; documentation is not great
</code></pre>
There are much better tutorials out there for image processing: 
<a href="http:&#x2F;&#x2F;www.html5rocks.com&#x2F;en&#x2F;tutorials&#x2F;canvas&#x2F;imagefilters&#x2F;" rel="nofollow">http:&#x2F;&#x2F;www.html5rocks.com&#x2F;en&#x2F;tutorials&#x2F;canvas&#x2F;imagefilters&#x2F;</a>