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Part 6 – SwimEye Product Guide

Part 6 – Calibration and Fine Tuning

The setup of our object recognition software to suit your pool.

Camera Monitoring Zones

Once hardware installation is complete and the system is connected, we are ready to switch on the SwimEye computers.  This is when our technical staff commence setup, calibration and fine-tuning.

The first activity is to establish the camera monitoring zones.  The monitoring zones are the areas in which each underwater camera provides automated tracking of swimmers.  Within our graphic user interface, the monitoring zone is indicated with a transparent yellow box.

Each monitoring zone is programmed directly into the software, taking into account the viewing direction and height of each camera.  By systematically customising the monitoring zone of each camera, we ensure that SwimEye is monitoring every part of a swimming pool basin.

The monitoring zone is highlighted with a yellow box. This demonstrates the area that SwimEye is watching from this camera.

Radio Alert Zones

During calibration, our other activity is to implement the radio alert zone strategy.  

The radios communicate the location of the drowning alarm from the Monitoring and Control Station to pool lifeguards.  This allows lifeguards to receive the alarm anywhere throughout the aquatic centre.

SwimEye typically recommends a simple radio alert zone strategy, with 4 or 6 zones per pool.  This is because it can be very complicated for users to learn and memorise the name and position of many zones.

The radio alert zones are actually designed during the technical study.  Most typically, each radio alert zone includes a minimum of two cameras which provide monitoring overlap.  The SwimEye monitoring overlap strategy allows us to provide the highest possible monitoring area for each pool (and very high detection performance).

Very high detection performance is one of the major strengths of SwimEye. It is common for our system to achieve 95-100% detection during standardised system testing.

Camera and radio alert zone plan for a 25m Swimming Pool.

The graphic user interface from a 25m Swimming Pool (left screen).

The graphic user interface from a 25m Swimming Pool (right screen).

System Test

Once calibration is completed, it is important to test the system. Testing confirms the monitoring zone of each camera and the overall detection level of the system.  Our technical staff complete additional fine tuning after the system test, to finalise the calibration and ensure the highest possible detection rate.

The system testing is described in the ISO Standard 20380.  This involves systematic drops of a rescue dummy throughout each pool.  In each drop, we expect detection to occur and an alarm to be provided by SwimEye.

SwimEye recommends that the system test is undertaken with full activity in the pool (i.e. when the pool is in use by swimmers).  This will ensure that we understand the monitoring and detection performance in real operational conditions and provide clients with the highest possible security level for each pool.

Example of a system test, demonstrating one test drop of a rescue dummy (viewed from the graphic user interface).

Example of a random daily system test with the rescue dummy (viewed from the under-water camera).

Example of a system test non-conformance, the rescue dummy must be raised to the surface after each test drop to correctly simulate a drowning situation.

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