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Vehicle detection method based on target feature points

A vehicle detection and target feature technology, applied in the field of image processing, can solve the problems of reducing vehicle recognition accuracy, large detection errors, etc., achieve high stability and detection accuracy, improve accuracy, and reduce detection errors.

Inactive Publication Date: 2016-01-13
CHANGAN UNIV
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AI Technical Summary

Problems solved by technology

However, in practical engineering applications, it is usually necessary to perform vehicle detection and analysis on roads with complex traffic scenes. At this time, due to the serious adhesion between vehicles, the commonly used vehicle detection methods bring large detection errors and reduce the Accuracy of vehicle recognition

Method used

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  • Vehicle detection method based on target feature points
  • Vehicle detection method based on target feature points
  • Vehicle detection method based on target feature points

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Embodiment 1

[0038] The present invention provides a vehicle detection method based on target feature points, such as figure 1 As shown, the vehicle detection method based on target feature points includes:

[0039] Step 1, establishing a world coordinate system and a pixel coordinate system, selecting six points with known world coordinates and pixel coordinates from the video for calibration, and obtaining a transfer matrix between the world coordinate system and the pixel coordinate system;

[0040] Step 2, determining the moving target area in the video, extracting feature points in the moving target area, determining the foot point according to the feature point, and determining the position of the foot point in the world coordinate system according to the transfer matrix Coordinates, combining the transfer matrix to determine the coordinates of the feature points in the world coordinate system;

[0041] Step 3: Select stable feature points that meet the preset requirements from the ...

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Abstract

The invention discloses a vehicle detection method based on target feature points, which belongs to the field of image processing. The method comprises steps: a transition matrix between a world coordinate system and a pixel coordinate system is acquired; a moving target area in a video is determined, feature points are extracted from the moving target area, pedal points are further determined, stable feature points are selected from the video, the stable feature points are tracked, a moving target track line is acquired, track line judgment is carried out according to the moving target track line, if the two track lines are judged to belong to the same vehicle, one is added to a vehicle counting result, and the above steps are repeated until the video is over. Through introducing a detection mode based on target feature point tracking and clustering to vehicle detection, compared with the prior art, environmental restrictions are reduced, stability and the detection precision are high, detection errors are reduced, and vehicle recognition accuracy is improved.

Description

technical field [0001] The invention belongs to the field of image processing, in particular to a vehicle detection method based on target feature points. Background technique [0002] The rapid development of socio-economic activities and urbanization has made both developed and developing countries suffer from huge urban traffic problems. Effective management of existing roads can maximize traffic flow and provide data for road construction. Among them, vehicle detection is carried out on a certain road section, and the traffic flow in a certain period of time is counted, and the traffic flow information of this road section is sent to other end users through Ethernet, which can effectively guide traffic and achieve the purpose of intelligent traffic management. Video-based traffic flow statistics are more and more widely used due to its convenient installation and maintenance and real-time and efficient detection performance. [0003] The currently commonly used video-ba...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00
CPCG06V20/584
Inventor 崔华宋焕生公维宾关琦王璇孙士杰孙丽婷
Owner CHANGAN UNIV
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