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Video-based detection and recognition system and method of vehicles

A vehicle detection and traffic technology, which is applied in the field of video-based traffic vehicle detection and recognition system, can solve the problems of poor ability to distinguish traffic vehicles and low resolution accuracy, and achieve the goals of reducing image noise, expanding search steps, and ensuring computing speed Effect

Inactive Publication Date: 2014-07-02
北京尚易德科技有限公司
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0007] For this reason, what the present invention aims to solve is the technical problem that the existing video-based vehicle detection has poor ability to distinguish traffic vehicles and low resolution accuracy under the conditions of significant background movement, vehicle adhesion and vehicle occlusion, and provides a better Vehicle discrimination ability, high-precision video-based traffic vehicle detection and recognition system and method

Method used

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  • Video-based detection and recognition system and method of vehicles
  • Video-based detection and recognition system and method of vehicles
  • Video-based detection and recognition system and method of vehicles

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Embodiment 1

[0054] A specific implementation of a video-based traffic vehicle detection and recognition system according to the present invention is given below, see figure 1 As shown, the video-based traffic vehicle detection and recognition system in this embodiment includes:

[0055] (1) target feature database module 2, after storing pattern recognition training to traffic vehicle sample image, according to the traffic vehicle sample target feature database that normalization type, angle type and vehicle type obtain, comprise sample image preprocessing unit 21, The traffic vehicle sample image classification unit 22 , the sample image feature extraction unit 23 , the sample image pattern recognition training unit 24 and the target feature database storage unit 25 are described in detail below.

[0056]Sample image preprocessing unit 21, cut out non-traffic vehicle sample image and described traffic vehicle sample image from traffic video, carry out image preprocessing to described tra...

Embodiment 2

[0079] On the basis of the above embodiments, in step ② of the traffic vehicle detection and recognition method, a specific method may also be used to detect the moving target area. In the step ③, the size of the moving target area can be approximated by enlarging the search window sequentially. The specific steps are as follows:

[0080] ② read the traffic video image sequence, the process of detecting the moving target area from the traffic video image sequence is as follows, see image 3 Shown:

[0081] T01: Read the sequence of traffic video images and perform relief calculation. The principle of relief calculation is to perform difference calculation between one pixel of the image and its adjacent upper left pixel and add a constant (in order to maintain the grayscale of the image, the constant here Can be set to 128) to add some brightness to dark areas. After the embossing operation is performed, a mixed Gaussian model is used to perform background modeling on the se...

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Abstract

The invention discloses a video-based detection and recognition system and a method of vehicles. The system comprises a target characteristic database module, a moving target detection module and a vehicle recognition module. A vehicle sample target characteristic database is built to store data by virtue of the target characteristic database module. After a moving target zone is detected by the moving target detection module, the vehicle recognition module builds a search window and recognizes vehicles. The system and the method resolve the technical problems of poor vehicle distinguishing capability and low distinguishing accuracy of the video-based vehicle detection under the condition of obvious background movement, vehicle adhesion, vehicle occlusion and the like in the prior art. The video-based detection and recognition system and the method of the vehicles have the advantages of excellent vehicle distinguishing capability and high accuracy.

Description

technical field [0001] The invention relates to the technical field of image processing and pattern recognition, in particular to a video-based traffic vehicle detection and recognition system and method. Background technique [0002] In recent years, with the rapid development of the electronics industry, especially new sensors and large-scale storage devices, video monitoring technology has become more and more popular due to its flexibility and comprehensiveness. It takes real-time dynamic information as the core and comprehensively uses computers, Control technology and other modern high-tech, flexible and fast real-time processing of video images to achieve real-time monitoring. Vehicle detection is an important link in the traffic system, providing information for traffic supervision and traffic control. Commonly used vehicle detection methods include coil detection, radar detection, laser detection, etc. The installation and maintenance of coil detection requires a l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/62G06K9/00G08G1/017
Inventor 张凤春童剑军刘劲松
Owner 北京尚易德科技有限公司
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