The stereoscopic system localizes the whole set of targets in the viewed scene. It records in Real-Time (120 f/s) dynamic phenomenons and renders, after calculation, successive x,y,z positions of each target.
Alternate solution: A single camera records the whole sequence in 2D (Airborne systems). A prior stereoscopic analysis of the scene allows to render the whole 3D displacement data from the single 2D sequence.
Markets: