High-definition video detection data-based region dynamic origin and destination (OD) matrix acquiring method

Abstract

The invention provides a number plate identification data-based region dynamic origin and destination (OD) data acquiring method, which belongs to the fields of road traffic signal control and high-definition video detection. The dynamic OD data is the dynamic origin and destination data, wherein O represents origin and D represents destination. The method particularly comprises the following steps of: 1, dividing OD regions according to requirements, wherein the minimum time unit is 5 minutes; and 2, uniformly processing data of each intersection in the region every 15 minutes by a traffic control center, detecting number plate data, packing the number plate identification data and uploading the number plate identification data to the traffic control center; comparing a plate number with an identity (ID) number passing through the intersections and acquiring the time of each vehicle passing through each intersection; acquiring the number of each intersection in the path through which each vehicle passes from the O point to the D point by taking the plate number as a clue and sequencing the intersections according to time sequence; and according to the number of the vehicles which pass through between the nodes, calculating to form a dynamic OD data matrix.

Description

technical field [0001] The invention relates to the field of road traffic signal control and the field of high-definition video detection. Background technique [0002] With the continuous development of my country's economy and society, urban road traffic is basically in a saturated state. Road congestion and the resulting environmental pollution, low efficiency of urban operation, and traffic accidents have become bottlenecks restricting urban economic and social development. Dynamic OD matrix is ​​an important basis for real-time traffic signal control and traffic guidance. [0003] The traditional way to obtain the OD matrix is ​​to conduct a large-scale travel survey of residents, which consumes a lot of manpower, material resources and time, and the sampling sample is limited, and can only obtain the average static OD matrix in the research area, and cannot grasp the OD information. dynamic change characteristics. The OD matrix solution method based on road traffic f...

AI Technical Summary

Problems solved by technology

[0003] The traditional way to obtain the OD matrix is ​​to conduct a large-scale travel survey of residents, which consumes a lot of manpower, material resources and time, and the sampling sample is limited, and can only obtain the average static OD matrix in the research area, and cannot grasp the OD information. The dynamic characteristics of

The OD matrix solution method based on road traffic flow is based on the traffic flow data measured by vehicle detectors such as induction coils and microwaves, and is realized by adding certain constraints for reverse inference. This method is inefficient and complicated to solve , it is difficult to meet the requirements of dynamic signal control

The OD matrix acquisition method represented by traffic checkpoints often installs a high-resolution camera or video camera on the driveway to take pictures of vehicle license plates, and compares the license plate numbers to obtain OD vehicles at a specific location in the previous time period, which cannot be used in urban traffic. application in control

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