Microsoft Windows 7 based Augmented Reality application

I have seen so many augmented reality applications which are based on the Android platform or the iPhone platform.
This is the first time I have seen a Microsoft Windows 7 based augmented reality application.
According to the website that I found this video clip, they needed to hack Window 7 in order to manipulate the camera because Windows 7 does not provide the API's which allow you to handle the camera.