APIs from RealityCap give iOS apps the ability to sense their surroundings in three dimensions. This patent-pending sensor fusion technology combines computer vision and inertial data to give your apps accurate 6DOF device motion and a 3D point cloud of the environment. RealityCap software runs on 2011 (A5-based) and newer devices in real time, with no additional hardware or markers. Results are accurate over both short and long distances, and come with absolute scale in meters.
I’ve previously covered other apps that are coming to market to help DIYers and professionals to quickly size rooms. This is slightly different; in that their is no external tool. You take a photo, that gets sent to a web service that does the calculations to work out the length of different objects in the photo. Very smart stuff.