Poseidon drowning detection system
Poseidon is a company that manufactures, installs, tests, and operates computer aided drowning detection systems. These systems are commonly installed in bathing areas, such as municipal swimming baths, waterparks, therepeutic baths, and other places where there is standing water in which there is a risk of drowning.
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Principle of operation
The Poseidon system consists of overhead and underwater cameras that are connected to a computer vision system that uses multiple overlapping views (epipolar geometry, fundamental matrix, essential matrix, etc.) to detect motionless bathers below the surface of the water in the baths.
List of installed sites
While the company maintains a list of installed sites, the list tends to be incomplete and out of date. The most up to date list on the company website is the French version of their web page, http://poseidon-tech.com/fr/ whereas the USA version is greatly out of date. Additionally, there are many baths that have the system installed, but are not listed on the site. None of the outdoor pool installations are listed on the company website; these are still of an experimental nature. Also installations in baths that are not used for swimming are not yet fully listed, since this is also an experimental usage. For example, use in therepeutic, soaking, and whirlpool baths is still being worked out in many of the installed sites, because of the more complex nature of the situation (greater variation in activity of the persons in the bath, in contrast to simple lane-swim where everyone is going in the same direction, etc.).
Competing companies
Other companies, such as Swimguard, and Drowning Early Warning System (DEWS) also provide similar drowning detection systems.