Face detection from picture and replacement- PAID

Hello,

Please check this URL: http://www.photofunia.com/

I want the image replacement functionality only. Please click on any image in the home page. You will be taken to a different page where you can upload your own picture. Automatically the image is replaced by the face that is marked in the image. Please check that. I need help regarding the scripts that will allow me to do the same in PHP.

If anyone can supply me with a correct solution i am willing to pay for the same as i need this Urgently.

Please do email me directly at: arnab.mallick@gmail.com

As you can understand that i am developer myself so please be fair with me and let me know how this can be done. Awaiting your response on the same.

Thanks
Arnab