Method of analyzing vehicle dynamic position in traffic accident

Abstract

The invention provides a method of analyzing vehicle dynamic position in traffic accident; the method comprises the steps of S1, measuring, on a ground, highway dimensions and ground marking lengths by means of on-site aerial photography in order to perform integrated data acquisition; S2, acquiring monitoring video data to form a highway grid coordinate system, subjecting the grid coordinate system to calibration processing and error evaluation, and subjecting a monitoring video image containing multiple accident vehicles to grid measurement in order to determine accurate positions of the accident vehicles in the single monitoring video image; S3, analyzing travelling trajectory, speed change, braking safety distance, travelling lane and travelling direction change of each of the multiple accident vehicles, drawing the accident vehicles positioned by the grid coordinate system to a positive overlook aerial photo according to a time point sequence, and analyzing to obtain traffic accident integrated information. By drawing grid coordinates for aerial photos taken in later stage and site images about conditions of accident sites, it is possible to depict a motion trajectory of a vehicle in the traffic accident accurately.

Description

technical field [0001] The invention relates to the field of video image analysis, in particular to a vehicle dynamic position analysis method in traffic accidents. Background technique [0002] Traffic accidents happen from time to time. With people's safety awareness and social development, the coverage of fixed monitoring video on the road is getting wider and wider. The driving recorder and other equipment on the vehicle will record the accident process. After a traffic accident, the traffic police need to analyze the driving trajectory and speed of the accident vehicle before the accident to make a determination of responsibility. Existing analysis methods include: relying on ground traces for analysis and so on. However, the main problem is that some accidents have limited ground traces, and it is difficult to accurately judge the position change relationship between vehicles before the accident based on a few ground traces, resulting in difficulties in determining th...

AI Technical Summary

Problems solved by technology

However, the main problem is that some accidents have limited ground traces, and it is difficult to accurately judge the position change relationship between vehicles before the accident based on a few ground traces, resulting in difficulties in determining the final responsibility.

Images