Research On Vehicle-Based Driving Support System Based On Vision

Vehicle scratches,collisions,rollovers and other traffic accidents plagued many drivers.The problem of driving auxiliary equipment for the development of such accidents is mainly vehicle environment information collection and system analysis and calculation.The traditional lane environment acquisition equipment has ultrasonic radar,but it is difficult to meet the difficult road,and can not intuitively give the driver operation tips.At the same time the system analysis and calculation is relatively large,the hardware equipment requirements.In order to reduce the cost of auxiliary equipment,reduce the space occupied and enhance the practicality,the camera has become the most common,cheap and reliable way to obtain the outside information.The steering control algorithm based on path planning can also reduce the running cost of the system.This paper studies and designs a vehicle safety through the auxiliary system,which mainly includes interactive visual driving area determination,steering control strategy and vehicle overturning estimation three functional modules.In this paper,four 170-degree wide-angle camera,through the image distortion correction and image stitching technology to get the 360-degree panoramic image around the body,the road width is small,high precision steering requirements of the road,the system can give the driver an intuitive The perspective.The system-based image-based human-computer interaction can assist the driver in marking the accessible area.In order to improve the intelligence of the system,this paper proposes a Hough lane mark detection method based on image feature,which can quickly and accurately detect the lane line in the video collected in the urban environment,and can adapt to sunny,rainy,daytime and nighttime climate Lighting conditions.When the system automatically identifies the lane line,the accessible area and the dangerous area and the real situation are different,through the human-computer interaction,the accessible area and the dangerous area to make precise adjustment mark.A steering control strategy based on path planning is proposed.Through the calibration of the distance measurement of the camera,the vehicle attitude and the surrounding environment can be obtained,and after they are quantified into mathematical relations,the vehicle's traffic scheme is obtained by the system calculation and analysis.The system transforms the planned driving trajectory into the wheel steering angle Into the steering wheel operation amplitude,such as the left to play the steering wheel circle and other intuitive signals.Compared with the genetic algorithm and the fuzzy control algorithm,the steering control has the advantage of small computational cost,which ensures the real-time performance of the system.In the path planning,we do not need to find the optimal solution.We only need to find a reasonable path under the premise of guaranteeing safety,Without traversing all the feasible solutions.A vehicle overturning estimation method combining binocular range is proposed.The vehicle in the harsh access road,encountered in front of obstacles,the driver is not easy to get off to view,the system can be binocular camera 3D information reduction,calculate the maximum size of the obstacle,the vehicle to take the chassis and unilateral The wheels ride the possibility of crossing the passage,and quantify them into a tipping factor to inform the driver.Combined with the driver test subjects two projects on the vehicle conducted a field test,the vehicle trajectory analysis and mathematical modeling,through the system warning and tips to ensure the smooth passage of vehicles.In life,if there is a similar warning,can effectively reduce the traffic accident in the scratch and rollover.Warnings and hazard warnings are given in advance when the vehicle is about to change the lane and collision scratches.Large-scale vehicles to install lighting projection equipment,combined with the steering wheel of the real-time steering angle data,the internal wear hazard area projected to the road,to the area of pedestrians and vehicle warning tips,can effectively reduce the driver's blind spot caused by the car accident.