Image Manipulation/ Creation curtain like effect

[eluser]Unknown[/eluser]
Hi,

I needed some help regarding image manipulation.


The input image is a simple random printed background (http://img855.imageshack.us/i/picfabric.jpg/).

The output required is a pleated version of it, one end of which is held closely (http://img9.imageshack.us/i/picfabric2.jpg/).

Can you please suggest us some package/software which has such capabilities. Or do guide how this can be achieved.

I have been using Imagemagick till now. Please note that I need a script to do it.