ClassWork / DeqingPathTracking
1. Explain in your own words how path-based motion tracking works.
1 find all objects in space 2 matching these objects with nearest trackers, if distance between them is smaller than a thereshold, update tracker's position to object's one 3 if a object can not find a matching tracker, add a new tracker for it. 4 if a tracker can not find a matching object, delete it.
2. Describe the various ways in which path-based motion tracking can fail
object moves too fast. Increase threshold to fix it. object overlap each other. Use velocity (subtract two position) to estimate position in following frames.
3. List five real-world ways in which path-based motion tracking could be used.
track moving vehicles. track pedestrians track movement of hand or finger tip track reflection in IR based touch screen track touch point in capacitive touch pad