Abstract
In maneuvering ship on the ocean, judging the surrounding situation correctly is very important to secure the safety of the ship. To provide useful supporting information for ship maneuvering various systems have been developed. However, to watch circumstances by operatiors is still important particularly under severe conditions such as navigation in passing narrow channel. It is desirable to provide new system in addition to the previously developed supporting systems of ship handling, because the confidence of the total system will be improved by plural different techniques. So we make experiments to extract and track ships in the spatiotemporal images. It is supposed to provide useful information instead of human eyes in the watching. Two computer vision techniques are applied to this purpose. The first is the template matching method and the second is optical flow method. These methods are applied complementally and extracted information are integrated. The results for a set of sequential images on the sightseeing ship have been so far satisfactory.
