Advanced image resize

Hi, I would like to request that you add binary support for running 
Bicubic image resizing. Currently I only have a PHP code snippet, taking 
approx 20 seconds to resize a 2000x1000px image to 550x275px.

I would like you to try speeding up this function, since 20 seconds is 
quite much, and the current functions does look quite bad.


http://pastebin.com/m216c7c32   <-- the function I'm using.