Fuzzy Semantic Petri Nets (FSPN) are Petri nets coupled with an underlying fuzzy ontology.
FSPN were applied to the problem of video event recognition. In the presented example an abandonned laguagge is correctly detected. (The event scenario and the dataset were published at PETS 2006 Workshop) .
xenters the scene and is still for some time
yoff and puts it on the floor. He stays close to it for some time. The rucksack should not move
noObject(x). The luggage rest still and unattended (possible bomb planting)
The listed above steps correspond to the places of FSPN specifying the scenario. Transition guards define the conditions that should be satisfied to reach the next step.
The clip below shows the GUI of a software, that internally usess the FSPN approach to recognize video events.