Robust method for detecting traffic signals and their associated states
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United States of America Patent
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Feb 2, 2021
Grant Date -
Dec 14, 2017
app pub date -
Aug 2, 2017
filing date -
Mar 26, 2012
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Methods and devices for detecting traffic signals and their associated states are disclosed. In one embodiment, an example method includes a scanning a target area using one or more sensors of a vehicle to obtain target area information. The vehicle may be configured to operate in an autonomous mode, and the target area may be a type of area where traffic signals are typically located. The method may also include detecting a traffic signal in the target area information, determining a location of the traffic signal, and determining a state of the traffic signal. Also, a confidence in the traffic signal may be determined. For example, the location of the traffic signal may be compared to known locations of traffic signals. Based on the state of the traffic signal and the confidence in the traffic signal, the vehicle may be controlled in the autonomous mode.
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