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Video-based safety precaution method for vehicle merging from highway ramp

A technology for highways and highways, applied in image data processing, instruments, calculations, etc., can solve problems such as slow response and failure to meet application needs, and achieve high accuracy, easy implementation, and broad application prospects

Active Publication Date: 2013-08-07
CHINA HIGHWAY ENG CONSULTING GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing method mainly uses the driver to directly judge the traffic information at the ramp intersection, but the result is easily affected by the driver's subjective influence, not only slow in response, but also has strong adaptability to the influence of light and weather, which cannot meet the actual situation. application needs

Method used

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  • Video-based safety precaution method for vehicle merging from highway ramp
  • Video-based safety precaution method for vehicle merging from highway ramp
  • Video-based safety precaution method for vehicle merging from highway ramp

Examples

Experimental program
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Effect test

Embodiment 1

[0059] Set up the first camera along the direction of the main road at the ramp of the expressway, and the range of the first camera is L 1 = 150 meters, the first camera collects the traffic video image on the main road, which is recorded as the first video image, and uses the feature-based target vehicle tracking method to track all the vehicles within the range of the camera to the merged area to get all The trajectory of the vehicle. Set up the second camera along the direction of the ramp at the place where the first camera is erected at the ramp entrance of the expressway, and the range of the second camera is denoted as L 2 = 150 meters, the second camera collects the traffic video image on the ramp, which is recorded as the second video image, and uses the feature-based target vehicle tracking method to track all the vehicles within the range of the camera to the merged area to obtain all vehicles The trajectory of the car. For the first video image, randomly select ...

Embodiment 2

[0061] Set up the first camera along the direction of the main road at the ramp of the expressway, and the range of the first camera is L 1 = 150 meters, the first camera collects the traffic video image on the main road, which is recorded as the first video image, and uses the feature-based target vehicle tracking method to track all the vehicles within the range of the camera to the merged area to get all The trajectory of the vehicle. Set up the second camera along the direction of the ramp at the place where the first camera is erected at the ramp entrance of the expressway, and the range of the second camera is denoted as L 2 = 150 meters, the second camera collects the traffic video image on the ramp, which is recorded as the second video image, and uses the feature-based target vehicle tracking method to track all the vehicles within the range of the camera to the merged area to obtain all vehicles The trajectory of the car. For the first video image, randomly select ...

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Abstract

The invention belongs to the field of video detecting, and provides a video-based safety precaution method for vehicle merging from a highway ramp. The method includes arranging two cameras in the same directions as two ways on highway entrances to detect moving vehicles, marking vehicle trajectories, acquiring actual moving distance through calculation according to the vehicle trajectories in a continuous tracking frame, acquiring actual speed of the vehicles, acquiring time difference of vehicle entering the merging areas between the two ways through the speeds of vehicles on the two ways, and judging possibility of vehicle collisions through the time difference. Compared with the prior art, the video-based safety precaution method is not limited by environments, capable of performing real-time and reliable precaution for all vehicles in the video areas, easy to realize, high in accuracy, applicable to real-time traffic precaution for highway ramps, and wide in application prospect.

Description

technical field [0001] The invention belongs to the field of video detection, and in particular relates to a video-based safety warning method for vehicle merging on a freeway ramp. Background technique [0002] Recently, facing the rapid growth of expressway mileage in our country, expressway traffic accidents are increasing year by year, among which the ramp of expressway is the accident-prone section. Especially in poor light and weather conditions, ramp crossings are prone to traffic accidents. The incorporation of video-based expressway ramp vehicles into safety warning technology improves the rapid response capability of abnormal conditions, and at the same time, real-time acquired data can be transmitted to the traffic management department in a timely and accurate manner, improving work efficiency and the operation level of the entire road network. [0003] The existing method mainly uses the driver to directly judge the traffic information at the ramp intersection,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/16G06T7/20
Inventor 王国锋李东方张鹏彭玲玲席阳宋焕生李建成宋鹏飞
Owner CHINA HIGHWAY ENG CONSULTING GRP CO LTD
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