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Video-based real-time vehicle entry and exit recognition method

A recognition method and vehicle technology, applied in the field of image processing, can solve the problems of complex environment and difficult to achieve the effect of moving target detection method, and achieve the effect of good lighting robustness

Active Publication Date: 2020-12-04
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the actual scene in front of the gate, the environment is often more complex, and it is difficult for the general moving target detection method to achieve good results.

Method used

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  • Video-based real-time vehicle entry and exit recognition method
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  • Video-based real-time vehicle entry and exit recognition method

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Embodiment Construction

[0034] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0035] like figure 1 As shown, according to the video-based real-time vehicle entry and exit recognition method of the present invention, the specific implementation steps are as follows for vehicle detection in front of the road gate:

[0036] Step 1, install the camera to collect images. The present invention uses a fisheye wide-angle camera to collect images. The camera is installed on the side of the barrier box, such as figure 2 As shown, the shooting direction is perpendicular to the driving direction of the vehicle.

[0037] ...

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Abstract

A video-based real-time vehicle entry and exit recognition method involves an image processing method. The invention includes installing a camera to collect images, detecting a moving target based on the combination of the frame difference method and the dense optical flow method, foreground detection based on the background difference method, fusing the moving foreground and extracting the color image of the vehicle area, and detecting the moving target based on the LK optical flow method. Corner tracking, moving vehicle entry judgment, moving vehicle color recognition, counting the number of vehicles and outputting the result image. The invention can not only improve the integrity of the segmented vehicle area, but also can segment the vehicle area no matter whether the vehicle is moving or not. The vehicle area can also be detected when the vehicle is parked, and the target will not be lost. This method has strong robustness.

Description

technical field [0001] The invention relates to an image processing method, in particular to a vehicle entry and exit recognition method. Background technique [0002] With the development of my country's economy and the continuous progress of science and technology, major cities are vigorously promoting the construction of smart cities. As a part of it, the intelligent parking lot adopts information technology to manage the entry and exit of vehicles in the community, which is a development trend. In an efficient unattended parking lot system, it is necessary to detect the entry behavior of vehicles accurately and in real time. [0003] Usually, for the judgment of vehicle entry and exit behavior, there are methods using geomagnetic induction and infrared induction sensors, image recognition methods based on license plate detection, and wireless induction methods using identity cards. Some of these methods are difficult to install, can only be used in specific scenarios, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/00G06K9/46G06T7/254G06T7/269
CPCG06T7/254G06T7/269G06V20/40G06V10/56G06V2201/08
Inventor 孙光民张子昊王皓翁羽赵莹帝
Owner BEIJING UNIV OF TECH