Morphological detection algorithm of an event on board a ship

In this paper, two novel morphological event detection algorithms are proposed for a vision based warning system, in consideration of a situation such as camera trembling on board a ship. Under such camera trembling, edge-like streaks appear on the difference image and so it is not adequate to use the statistics of the difference image directly for event detection. The proposed algorithms, based on the difference image, exploit morphological filters to sequentially threshold images so as to remove the edge-like components of the difference image, while keeping the vestige of events. The simulation results show a good performance robust to camera trembling