3D laser profiling food and beverage manufacturing applications include: identifying improperly filled packages by verifying object heights, detecting defects like skewed caps, and measuring volume and dimensions to verify portion size, to name a few.
http://www.cognex.com/3D-displacement-sensor-laser-profiler.aspx?cm_campid=CBE3862F-9518-E211-AE9B-5EF3FCDAF1B7