Traffic Lights

Determines the state of traffic lights, so that you can detect vehicles failing to stop for a red light.

Configuration Parameter Description
AmberMinDuration The minimum amount of time that the amber light must be on.
AmberRegion The position of the amber light.
GreenRegion The position of the green light.
Input The image track to process.
MinLuminance The luminance threshold at which Media Server considers a light to be on rather than off.
RedCyclesPerMinute The range of acceptable frequencies for flashing red lights.
RedMinDuration The minimum amount of time that the red light must be on.
RedRegion0 The position of the red light.
RedRegion1 The position of the second red light (for level crossings).
SampleInterval The interval at which frames are selected to be analyzed.
SegmentDuration The maximum duration of a record in the SegmentedResult track.
Type The analysis engine to use. Set this parameter to TrafficLight.

Output Tracks

Output track Description
Data Contains a record for each analyzed video frame, describing whether the lights are red.
Result Contains a record each time the lights change, describing whether the lights are red.
SegmentedResult

(Available only when processing video). The same as the Result track, except the duration of each record is limited by the parameter SegmentDuration. If a result exceeds the specified duration, Media Server begins a new record with the same ID.

Start

The same as the Data track, except it contains only the first record of each event.

End

The same as the Data track, except it contains only the last record of each event.

To see an example record, use the action GetExampleRecord.