License plate data processing method based on traffic information extraction computation

Abstract

A traffic information extraction and calculation-based method for processing data of license plates comprises four steps: step (1), a vehicle license plate recognition database is established in a computer at a background processing center; step (2), vehicle license plate data, the starting point and the destination of which are designated by a user is initially matched, and a vehicle travel time testing database is established in the computer at the background processing center; step (3), information granules of a route designated by the user is structured, and ambiguous route noises in the vehicle travel time testing database are eliminated according to computer operating procedures, and then a vehicle travel time database of the designated route is acquired; and step (4), by the computer operating procedures, information granules of travel time are structured, and vehicle travel time noises in the vehicle travel time database are eliminated, and then precise travel time is acquired. The method can improve the accuracy of the vehicle travel time data, has important practical value in the field of intelligent transportation, and can be widely applied to situations such as traffic management, monitoring, law enforcement, electronic toll collection, and traveler information service.

Description

technical field [0001] The invention belongs to the field of intelligent transportation, and relates to a method for extracting and calculating traffic information, in particular, a method for obtaining accurate vehicle travel time data by processing vehicle license plate ("license plate" for short) data. Background technique [0002] In the field of intelligent transportation, obtaining vehicle travel time data has important practical value, and can be widely used in traffic management, monitoring, law enforcement, electronic toll collection, and traveler information services. [0003] The method of obtaining vehicle travel time data is to use the front-end data acquisition and transmission device to capture the image of the vehicle passing through the section, record the time stamp of the acquisition, and the front-end data acquisition and transmission device will preliminarily process the image data and transmit it to the central system. The module automatically recognize...

AI Technical Summary

Problems solved by technology

[0003] The method of obtaining vehicle travel time data is to use the front-end data acquisition and transmission device to capture the image of the vehicle passing through the section, record the time stamp of the acquisition, and the front-end data acquisition and transmission device will preliminarily process the image data and transmit it to the central system. The module automatically recognizes the vehicle license plate, obtains information such as the vehicle license plate string and the vehicle license plate type, and then uses the vehicle license plate as the unique identification of the vehicle to process and generate the travel time of the corresponding vehicle from the starting point (O) to the ending point (D). However, due to There may be problems such as ambiguous paths between the starting point (O) and the ending point (D), and the time series rationality of matching data, which brings noise data and errors, greatly reduces the quality and accuracy of travel time sample data, and affects Realized its practical value

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