I'm glad to see that Computer Vision is considered as an important field in company like Microsoft and Google.
Do you know Georg Klein, the author of PTAM ?
This guy now work for Microsoft.
See the note on his main page HERE:
"Oct 2009: Microsoft
As of October 2009, I've moved to Seattle to work for Microsoft's MSN Advanced Engineering team. I will keep maintaining the PTAM sources, but updates to this page will slow and cease."
Another case :
The note :
"I work for Google now, while I am still involved in some academic projects. I hope to provide exciting products to people in the world and prove that computer vision is exciting and useful."