This is really neat. Today, Valve software is releasing a Steam app called Destination Workshop Tools, which will allow anyone to create roomscale VR environments like the Destinations experience in The Lab. The tool doesn't include photogrammetry software, so you still have to composite photographs using something like PhotoScan or Autodesk ReMake, but FBX model files can be imported into Valve's tool to format it for the Source engine and add things like teleportation markers and a skybox. The tool should work for more than just environments too--you can plot yourself in VR on any mesh. Check out Valve's Destinations tutorial for more--we're definitely going to be trying this out!