A vehicle feature extraction and matching method based on video

A technology of vehicle features and matching methods, which is applied in the fields of image processing and traffic video detection, and can solve the problems of large amount of calculation, time-consuming, and difficulty in guaranteeing robustness and accuracy.

Inactive Publication Date: 2019-03-01
SOUTHEAST UNIV
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Problems solved by technology

However, this method still has many difficulties. For example, the bayonet camera is installed outdoors, which is greatly affected by factors such as light and environment. In addition, due to the complex and changeable traffic scene, it is difficult to guarantee the accuracy of s when vehicles are dense or in emergencies. Robustness and accur...

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  • A vehicle feature extraction and matching method based on video
  • A vehicle feature extraction and matching method based on video
  • A vehicle feature extraction and matching method based on video

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Embodiment Construction

[0089] The technical solutions provided by the present invention will be described in detail below in conjunction with specific examples. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

[0090] The video-based vehicle feature extraction and matching method provided by the present invention, its process is as follows figure 1 shown, including the following steps:

[0091] Step 1: Read in the video file:

[0092] Read in the video file from the traffic checkpoint camera, and take a frame-sized color image, denoted as G, and the width and height of the color image are W and H respectively;

[0093] Step 2: Perform background modeling on the video image to ensure accurate, stable and real-time background:

[0094] If image G corresponds to the first frame image of video file, then carry out the initialization of background model, otherwise, carry o...

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Abstract

The invention discloses a vehicle feature extraction and matching method based on video, comprising the following steps: reading a video file; performing video image background modeling; the background subtraction method is used to obtain the foreground region containing moving objects. Vehicle detection is carried out by acquiring vehicle contour. Extracting pHash feature from vehicle image; extracting vehicle image ISIFT features; combined with pHash algorithm and ISIFT algorithm, and through BBF search algorithm and RANSAC algorithm to screen ISIFT feature matching points, so as to achievevehicle matching. The invention can realize the functions of vehicle detection, vehicle characteristic information extraction and vehicle matching based on the video, and can detect the vehicle outline of the vehicle very accurately, extract the vehicle information characteristic accurately, meet the real-time requirement with high operation speed and low cost, and can detect the vehicles traveling in different directions, and has wide application range.

Description

technical field [0001] The invention belongs to the field of image processing and traffic video detection, and relates to a video-based vehicle feature extraction and matching method, which is mainly applied to video-based vehicle detection, vehicle feature information extraction, and vehicle matching. Background technique [0002] The cost of extracting traffic information through video is low, and only need to use the capture camera at the traffic checkpoint. Extracting various information of vehicles involves computer vision and image processing technology. With the continuous enhancement of computer computing power, it is possible to accurately extract vehicle information through digital video. However, this method still has many difficulties. For example, the bayonet camera is installed outdoors, which is greatly affected by factors such as light and environment. In addition, due to the complex and changeable traffic scene, it is difficult to guarantee the accuracy of s...

Claims

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Application Information

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IPC IPC(8): G06K9/00G06K9/46G06K9/62G06T7/246G06T7/254
CPCG06T7/246G06T7/254G06T2207/20224G06T2207/10016G06V20/40G06V20/46G06V10/446G06V10/462G06V10/757G06V2201/08G06F18/24147
Inventor 路小波夏雪
Owner SOUTHEAST UNIV
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