The invention relates to an early warning system for collision avoidance at sea (12), which comprises at least one optical detector (10). At least part of the coverage of horizon marine instruments in extraction, image processing, real-time images, and each S the position of objects visible on the sea surface.Through computational analysis and collision avoidance information magazine to locate and estimate any visible object collision risk. Any visible change of the object of the marine instrument can see the location information of the object. Applications in all marine instruments, as well as in floating manned or UAVs.
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