Vehicle type automatic recognition method and system

A technology of automatic identification and identification method, applied in the field of vehicle identification, can solve the problems of large amount of calculation, unsatisfactory identification effect, and difficult construction, and achieve the effect of reducing the amount of calculation and improving the accuracy

Pending Publication Date: 2017-12-01
上海骁达信息科技有限公司
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Problems solved by technology

[0002] The traditional expressway vehicle vehicle type recognition technology can be roughly divided into two types, namely the automatic vehicle type recognition system based on image recognition and the automatic vehicle type recognition system based on grating. However, the traditional automatic type recognition system based on image recognition requires a large amount of calculation. , The recognition effect is unsatisfactory; while the traditional automatic vehicle identification system based on gratings cannot detect the number of wheels, vehicle height, etc. Environmental factors such as dust, ice fog, and rain on the site will also affect the normal operation of the system, and the installation needs High-precision alignment, difficult construction

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Embodiment Construction

[0055] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0056] The object of the present invention is to provide a method and system for automatic identification of vehicle types, which have the advantages of low requirements for installation accuracy, small amount of calculation, and high accuracy of identification of vehicle types.

[0057] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in con...

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Abstract

The invention discloses a vehicle type automatic recognition method and system. The method comprises: obtaining a vehicle roof characteristic acquired by a laser radar; obtaining a first image acquired by a first camera; obtaining a second image acquired by a second camera; determining a transformation matrix between the first image and the second image; splicing the first image and the second image according to the transformation matrix; performing image fusion on the spliced images by employing an image fusion algorithm based on a Laplacian pyramid; performing smooth processing on the fusion image; extracting a vehicle chassis characteristic according to the smoothed image; extracting a vehicle wheel shaft characteristic according to the smoothed image; and determining the vehicle type according to the vehicle chassis characteristic, the vehicle wheel shaft characteristic and the vehicle roof characteristic. According to the vehicle type automatic recognition method and system, the requirement of the installation precision is low, the calculation amount is small, and the accuracy of vehicle type recognition is high.

Description

technical field [0001] The invention relates to the field of vehicle identification, in particular to a vehicle type automatic identification method and system. Background technique [0002] The traditional expressway vehicle vehicle type recognition technology can be roughly divided into two types, namely the automatic vehicle type recognition system based on image recognition and the automatic vehicle type recognition system based on grating. However, the traditional automatic type recognition system based on image recognition requires a large amount of calculation. , The recognition effect is unsatisfactory; while the traditional automatic vehicle identification system based on gratings cannot detect the number of wheels, vehicle height, etc. Environmental factors such as dust, ice fog, and rain on the site will also affect the normal operation of the system, and the installation needs High-precision alignment, difficult construction. Contents of the invention [0003]...

Claims

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Application Information

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IPC IPC(8): G06K9/00G06K9/46G07B15/06
CPCG07B15/06G06V20/54G06V10/462G06V2201/08
Inventor 肖翼翔
Owner 上海骁达信息科技有限公司
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