In this approach, two cameras with a known physical relationship (i.e. what common field of view the cameras can see, and how far apart their focal points sit in physical space) are correlated via software. By finding mappings of common pixel values, and calculating how far apart these common areas reside in pixel space, a rough depth map can be created. This is very similar to how the human brain uses stereoscopic information from the eyes to gain depth cue information, i.e. how far apart any given object in the scene is from the viewer.
Wipo Publishes Patent of 3vi and Jens Schick for "Object Detection Device for a Vehicle, Vehicle with Such an Object Detection Device and Method for Determining a Relative Positional Relationship of Stereo Cameras with Respect to One Another" (German Inventor)
Feb 16, 2013; GENEVA, Feb. 16 -- Publication No. WO/2013/020872 was published on Feb. 14.Title of the invention: "OBJECT DETECTION DEVICE FOR A...