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Method and device for vehicle identification

A vehicle type identification and vehicle type technology, applied in the field of intelligent transportation, can solve the problems of low recognition accuracy and difficult implementation

Active Publication Date: 2021-08-06
CHINA MOBILE SUZHOU SOFTWARE TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Embodiments of the present invention provide a vehicle type identification method and device to solve the technical problems of low identification accuracy and difficult implementation in existing vehicle type identification methods

Method used

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  • Method and device for vehicle identification
  • Method and device for vehicle identification
  • Method and device for vehicle identification

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Experimental program
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Effect test

Embodiment 1

[0066] An embodiment of the present invention provides a vehicle type identification method, which can be divided into two parts: template library establishment and vehicle type identification. Among them, the template library established based on the template library establishment part can be used as the basis for the car model recognition part to identify the car model, and the process and results of car model recognition can be used to update and improve the template library. These two parts are introduced below:

[0067] Part 1: Template library creation

[0068] In the embodiment of the present invention, the template library includes a plurality of template coordinate point sets belonging to various vehicle types, wherein each vehicle type in the various vehicle types includes at least one template coordinate point set, and each template coordinate point set represents a side The contour line of the vehicle's roof in the viewing angle. figure 1 Shown is a schematic dia...

Embodiment 2

[0142] Based on the same inventive concept, an embodiment of the present invention provides a vehicle type identification device. See Figure 10 , the vehicle type identification device at least includes a coordinate point set determination module 1001, a similarity distance determination module 1002 and a vehicle type determination module 1003, wherein:

[0143] A coordinate point set determination module 1001, configured to determine a first coordinate point set used to characterize the roof contour of the vehicle to be tested under the side view angle, and each coordinate point in the first coordinate point set represents a coordinate position;

[0144] The similarity distance determining module 1002 is configured to determine the respective similarity distances between the first coordinate point set and a plurality of template coordinate point sets belonging to various vehicle models based on a preset similarity distance algorithm, wherein the various Each vehicle type in...

Embodiment 3

[0165] Based on the same inventive concept, an embodiment of the present invention provides a computer device, including:

[0166] at least one processor, and

[0167] memory coupled to at least one processor;

[0168] Wherein, the memory stores instructions executable by at least one processor, and at least one processor executes the method described in Embodiment 1 by executing the instructions stored in the memory.

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Abstract

Embodiments of the present invention provide a vehicle type identification method and device, which are used to solve the technical problems of low identification accuracy and difficult implementation existing in existing vehicle type identification methods. Wherein, the method includes: determining a first coordinate point set used to characterize the roof contour line of the vehicle to be tested under the side view angle, each coordinate point in the first coordinate point set represents a coordinate position; Degree distance algorithm, determine the similarity distance between the first coordinate point set and a plurality of template coordinate point sets belonging to multiple vehicle models, wherein each vehicle type in the multiple vehicle types includes at least one template coordinate point set, each A template coordinate point set represents a vehicle roof contour line in a side view angle, and the similarity distance is a distance representing the similarity between the point sets; according to the respective similarity distances, the model of the vehicle to be tested is determined.

Description

technical field [0001] The present invention relates to the technical field of intelligent transportation, in particular to a vehicle type identification method and device. Background technique [0002] Vehicle type recognition is an important part of intelligent transportation system. For example, based on the identification of vehicle types, it is possible to realize the statistics of the traffic flow of different types of vehicles on the road. The traffic flow data of different types of vehicles obtained through statistics is the key basic data for traffic command and road maintenance. [0003] At present, the methods of vehicle type recognition mainly include pressure recognition method and image recognition method. Among them, the pressure recognition method recognizes the vehicle model based on the weight of the vehicle by detecting the weight of the vehicle; the image recognition method takes the vehicle image and performs background elimination and other processing ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B17/02G06K9/62
CPCG01B17/02G06F18/22
Inventor 叶玉婷
Owner CHINA MOBILE SUZHOU SOFTWARE TECH CO LTD