Research on Real-Time Anomaly Detection of Fishing Vessels in a Marine Edge Computing Environment

Algorithm 2

Trajectory anomaly detection.

	Input:
	normal trajectory model
	trajectory
	Output:
	abnormal index
	Begin:
(1)	trajectory feature extraction
(2)	update normal trajectory model by Incremental DBSCAN
(3)	for each do
(4)	calculate trajectory distance
(5)	get the minimum trajectory difference
(6)	return
	End