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Vehicle model recognition method based on infrared structured light

A technology for vehicle identification and structured light, applied in the field of intelligent transportation, can solve the problems of high cost, sensor response results are easily affected by the surrounding environment and busy traffic, and limited service life of piezoelectric sensors. Low maintenance cost and easy installation

Inactive Publication Date: 2016-02-17
CHINA MERCHANTS CHONGQING COMM RES & DESIGN INST
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  • Claims
  • Application Information

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Problems solved by technology

Vehicle identification technology based on piezoelectric sensors has the following problems: the response results of sensors are easily affected by the surrounding environment and heavy traffic; piezoelectric sensors have a limited life span, and replacement of sensors requires damage to traffic roads and re-laying, which will cost a high price

Method used

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  • Vehicle model recognition method based on infrared structured light
  • Vehicle model recognition method based on infrared structured light
  • Vehicle model recognition method based on infrared structured light

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Embodiment Construction

[0022] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0023] figure 1 It is a schematic flow chart of the method of the present invention. As shown in the figure, the vehicle identification method based on infrared structured light of the present invention includes the following steps:

[0024] S1: The grating fringe pattern is projected onto the surface of the detected vehicle through the infrared grating projector-camera device, and the camera then acquires structured light imaging data;

[0025] S2: According to the structured light imaging data and calculate the three-dimensional contour information of the detected vehicle, the specific steps are as follows:

[0026] S21: Perform equidistant translation within the phase period 2π in the vertical direction of the projected grating, each translation is π / 2, and one image is taken for each translation, and finally the corresponding four fram...

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Abstract

The invention relates to a vehicle model recognition method based on infrared structured light, and belongs to the technical field of intelligent transportation. The method comprises the following steps: (1) acquiring structured light imaging data through an infrared grating projector-camera device; (2) calculating the 3D contour information of a detected vehicle according to the structured light imaging data; and (3) using a support vector machine multi-classification approach to carry out classification according to the 3D contour information of the detected vehicle so as to recognize the model of the detected vehicle. The method has the advantages of accuracy, quickness, high data spatial resolution, a small amount of calculation and the like, and can improve the accuracy of vehicle model recognition and ensure the real-time performance. The structured light imaging data is acquired by an infrared grating, which causes no visual pollution to drivers, is advantageous to the driving safety of drivers, and is not easily influenced by light factors. The device is simple in installation, can be installed without destroying the road, and is low in maintenance cost. No construction on the driveway pavement is needed for camera or probe installation, and detector replacement, adjustment and movement do not affect the traffic.

Description

technical field [0001] The invention belongs to the technical field of intelligent transportation, and relates to a vehicle identification method based on infrared structured light. Background technique [0002] With the rapid economic growth in today's society, the society's demand for transportation is increasing, and the traffic density is also increasing. In people's work and life, traffic accidents occur frequently, and traffic congestion is prone to occur. It is urgent to use the current information and communication technology to solve the above problems. At the same time, countries all over the world have gradually increased investment in the management of traffic systems, paid more attention to traffic issues, and gradually formed the field of road traffic management research. Common systems in the field of road traffic management research today include Intelligent Transportation System (Intelligent Transportation System, ITS), Automatic Vehicle Identification Syst...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00G06K9/62
CPCG06V20/584G06F18/2411
Inventor 朱湧韩直周广振
Owner CHINA MERCHANTS CHONGQING COMM RES & DESIGN INST
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