Vision Algorithms: Behaviour Recognition
Scenario Representation : Issues
-
Large variety of actions and scenarios:
- more or less abstract (running/fighting)
- general (standing) / sensor and application dependent (sit down)
- spatial granularity: the view observed by one camera/the whole site
- temporal granularity: instantaneous/long term
- 3 levels of complexity depending on the complexity of temporal
relations and on the number of actors :
- non-temporal constraint relative to one actor (being seated).
- temporal sequence of sub-scenarios relative to one actor (open the
door, go toward the chair then sit down)
- complex temporal constraints relative to several actors (A meets B
and C at the coffee machine then C gets up and leaves)