A speed limit reminder and overspeed warning method based on a vehicle-mounted forward-looking camera
A camera and forward-looking technology, applied in computer parts, instruments, biological neural network models, etc., can solve problems such as lagging, speed limit prompt errors, unfavorable vehicles, and safe driving, so as to improve real-time performance and accuracy, High accuracy, good control effect
Active Publication Date: 2019-11-05
浙江华锐捷技术有限公司
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Problems solved by technology
Existing systems of this type are mostly based on GPS and map information. When GPS signals are inaccurate in certain urban working conditions (such as elevated roads, etc.), there will be errors or lags in the speed limit prompt, which will affect the driver's control of the vehicle. , which is not conducive to the normal and safe driving of the vehicle
Method used
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Embodiment
[0030] Embodiment: A kind of speed limit reminder and overspeed warning method based on the vehicle-mounted forward-looking camera of this embodiment, the vehicle-mounted forward-looking camera and the vehicle speed are the input of this method, and the road speed limit prompt signal and the overspeed warning signal are the output of this method . This function is turned on by default in the vehicle, and the user can turn off this function by himself. The general flow chart of the algorithm is as follows figure 1 shown, including the following steps:
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The invention relates to a speed limit prompt and overspeed warning method based on a vehicle-mounted forward-looking camera, comprising the following steps: offline training of a road speed limit sign detection algorithm; online road speed limit sign detection; road speed limit sign tracking; and road speed limit sign detection. Confidence scoring for detection; off-line training of road speed limit sign classification algorithm; road speed limit sign classification, determination of road speed limit value; speed limit prompt signal; calculation of overspeed ratio based on the obtained road speed limit value and the actual speed of the vehicle, According to the size of the overspeed ratio, overspeed graded alarms are carried out. The speed limit detection of the present invention has high accuracy, effectively improves the real-time performance and accuracy of speed limit prompts and overspeed warnings, adopts graded overspeed warning signals, and does not make the driver feel particularly sudden, thereby ensuring that the driver can make a relatively gentle deceleration Operation, to ensure that the driver can better control the vehicle, which is conducive to the normal and safe driving of the vehicle.
Description
technical field [0001] The invention relates to the field of vehicle control, in particular to a speed limit prompt and overspeed warning method based on a vehicle-mounted front-view camera. Background technique [0002] Speed limit reminder and overspeed warning are one of the important functions of ADAS system (video sensor-based driving safety assistance system). Speeding is one of the main causes of road traffic accidents. Drivers' intentional or unintentional speeding behaviors have potential accident hazards to road traffic safety. Timely and effective sending of road speed limit and overspeed warning signals to drivers can effectively reduce the probability of traffic accidents caused by excessive vehicle speed. Existing systems of this type are mostly based on GPS and map information. When GPS signals are inaccurate in certain urban working conditions (such as elevated roads, etc.), there will be errors or lags in the speed limit prompt, which will affect the driv...
Claims
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IPC IPC(8): G06K9/00G06N3/04
CPCG06N3/04G06V20/582
Inventor 缪其恒高山苏巍王江明许炜
Owner 浙江华锐捷技术有限公司
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