iGUIDE camera captures dense 2D point cloud that allows creation of accurate 2D floor plans, that are available in DXF CAD format as well. A 3D CAD model can be created from 2D floor plans by extruding them upwards and using ceiling and door heights, as well as heights and elevation of windows that can be obtained through iGUIDE’s newly released 3D measurements. This would not be an automatic process, however, but an architect could easily do it without having to leave the office.
When you look at 3D cameras, such as Matterport, Occipital (https://canvas.io or https://structure.io, they were used by GeoCV) or the just announced Intel’s time-of-flight(!) lidar camera (https://www.intelrealsense.com/lidar-camera-l515), they produce a 3D point cloud. That 3D point cloud is turned into a 3D model by computing a triangular 3D mesh, where size of triangles can be quite big at large distances away from the camera or due to optical occlusion by furniture. Triangles size limits the fidelity of the 3D model and accuracy of any 3D measurements that are made using that model. Look at any Matterport dollhouse to see how rough the mesh really is.
Experiment with the just released Matterport’s 3D measurements to see how limited and inaccurate the 3D mesh can be (https://try.matterport.com/measurement-mode/) - the lamp is measured to be 4" at the base and 2’1" at the top!
Using multiple panos per room and photogrammetry, we could create a 3D mesh from iGUIDE images, similar to how Cupix does it from 360 cameras or 360 images. But as seen above, that mesh can be quite rough and measurements taken on it can be quite inaccurate. To get a finer mesh, it would take an exponentially longer time and a handheld 3D scanner (like Occipital’s or Intel’s) would need to be used to “paint” walls and objects with it from a close distance.
In contrast to that, the way our new 3D measurements work is not relying on 3D mesh, but is using directly the measurement points you select, which allows us to also report the estimated uncertainty of each 3D measurement.
As you can see, the iGUIDE technology is the most practical tool for most real life applications.