A method for identifying the state of road traffic lights and counting down display time
A signal light state, road traffic technology, applied in the automotive field, can solve the problems of unable to recognize the time of the countdown display of road traffic signals, the inability to obtain the countdown information of the traffic signal lights at the intersection, and the high investment cost of infrastructure construction, so as to improve the traffic efficiency of the intersection and eliminate the Effects of Interfering with and Ensuring Traffic Safety at Intersections
Active Publication Date: 2022-06-07
JILIN UNIV +1
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Problems solved by technology
[0005] 1) Camera-based methods generally only recognize road traffic lights, and cannot simultaneously recognize the time of road traffic signal countdown displays under different time periods, environments, weather, and lighting conditions
[0006] 2) The method based on V2X technology requires high infrastructure investment costs and a long implementation period. When the road-side information transmitter fails, the vehicle-end cannot obtain the intersection traffic lights and traffic signal countdown information. At this time, it is still necessary to pass the vehicle The terminal autonomously recognizes the status of road traffic lights and the countdown display time of road traffic signals
Method used
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[0051] See Figure 1 , a method of identifying road traffic light status and countdown display time, including the following steps:
[0052] Step 1: Collect the data of the road traffic light status and the countdown display of the road traffic signal;
[0053] The camera is installed behind the car cab windshield or at the top bracket of the car, the height from the ground is 1.2-1.9m, and it is necessary to ensure that the camera is installed horizontally, and the camera optical axis is parallel to the ground. Take the installation position of the camera as the origin of the camera coordinate system, at this time, the x direction of the coordinate axis is the driving direction of the car, the y-axis is forward to the left side of the driving direction, and the z-axis is forward vertically upward. The present embodiment in the middle of 2016 to November 2020 in the sunny, rainy, snow, fog, haze, typhoon weather conditions of 0:00-24:00 time, changchun, Huangshan, Hangzhou, Shangha...
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The invention relates to a method for identifying the state of road traffic lights and counting down display time. The method comprises the following steps: 1. Collecting the state of road traffic lights and the data of road traffic signal countdown displays; 2. Labeling and forming a data set of road traffic lights and road traffic signal countdown displays; Detect the bounding box of the traffic signal countdown display and the digital bounding box in the road traffic signal countdown display; 4. Group the state of the road traffic signal light, the countdown display, and the countdown time. The present invention adopts the method of artificial intelligence to collect and label the state of road traffic signal lights, the countdown display of road traffic signals, and the time of countdown display of road traffic signals to form a data set of road traffic signal lights and countdown display of road traffic signals, and simultaneously identify the state of road traffic signal lights and road traffic Signal countdown monitor time.
Description
Technical field [0001] The present invention relates to the field of automotive technology, specifically to a method of identifying the state of road traffic lights and counting down display time. Background [0002] Intelligent driving car is in today's society in artificial intelligence, computer vision, big data, Internet of Things, multi-sensor fusion, automatic control and other highly developed products of science and technology, it mainly relies on on-board computing systems, sensors to perceive the traffic environment around the vehicle, will be obtained by the sensor of the perception information for reasoning, get the traffic environment cognitive information, control the steering and speed of the vehicle, so that the vehicle can safely, reliably and autonomously drive on the road. In the process of driving on urban roads, intelligent driving cars identify the status of road traffic lights and the countdown display time of road traffic signals through two ways of vehicl...
Claims
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IPC IPC(8): G08G1/095G08G1/096
CPCG08G1/095G08G1/096
Inventor 陈虹万树春丁海涛张建伟胡云峰郭洪艳闫善鑫李鑫费书森朱飞白胡浩奇刘嫣然洪雨希杨晨旭张世豪黄成真
Owner JILIN UNIV