PHP / Linux Image Templates

I'm trying to find a way to texture textures on furniture images. Similar to:

http://www.la-z-boy.com/Product/5767-1132/Collins-Living-Room-Sofa/

The only solution I can come up with is to create a Photoshop script for this. The problem is that there are 1000 pieces of furniture and 1000 fabrics. We are talking about 100k + images to make this work. I was hoping that someone knew about a program or function in PHP or Linux that I could use to dynamically create these images.