Method and system for low-altitude ground vehicle detection and motion analysis

A technology for vehicle detection and motion analysis, which is applied in the field of intelligent transportation and can solve problems such as inaccurate motion analysis and noise interference.

Inactive Publication Date: 2011-06-08
UNIV OF SCI & TECH OF CHINA
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Problems solved by technology

However, this method is greatly disturbed by noise during

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  • Method and system for low-altitude ground vehicle detection and motion analysis
  • Method and system for low-altitude ground vehicle detection and motion analysis
  • Method and system for low-altitude ground vehicle detection and motion analysis

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Embodiment Construction

[0056] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0057] see figure 1 , which is a flow chart of the steps of Embodiment 1 of the present invention, in which positive samples and negative samples are intercepted in the captured video frames in advance, and the positive samples and negative samples are used as training samples, the method includes:

[0058] Step S101: Perform cyclic training on the training samples according to the feature blocks divided by the training samples, and obtain weak classifiers cor...

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Abstract

The invention discloses a method and a system for low-altitude ground vehicle detection and motion analysis, in which a positive sample and a negative sample are captured in a video frame in advance. The method comprises the follow steps of: performing circuit training on a training sample according to characteristic blocks divided by the training sample to obtain a weak classifier of each regionin each cell gradient direction of the training sample; combining the weak classifiers to obtain a strong classifier corresponding to each cell; taking output values of the all the strong classifiersas feature vectors, training to obtain a support vector machine classifier, detecting the vehicle by using the support vector machine classifier, and marking an area as a vehicle area when the vehicle is detected in the area; calculating color space similarity between the vehicle area and an image area scanned by a scanning window in neighboring image frames; and comparing the space color similarity to obtain the motion trail of the same vehicle, and performing motion analysis. The method can improve accuracy rate of low-altitude ground vehicle detection, and also can improve accuracy of vehicle motion analysis.

Description

technical field [0001] The invention relates to the field of intelligent transportation, and more specifically relates to a method and system for detecting and analyzing motion of low-altitude ground-to-ground vehicles. Background technique [0002] The low-altitude ground-to-ground urban traffic monitoring system mainly uses unmanned aircraft equipped with cameras to capture urban road traffic information. The use of low-altitude ground-to-ground urban traffic monitoring systems can alleviate traffic congestion and effectively reduce traffic accidents. Therefore, the detection of moving vehicles in road traffic and their corresponding motion information under low-altitude ground-to-ground platforms has become a great concern of the research and industry circles. key technologies. [0003] Existing vehicle detection methods mainly include frame difference method, background difference method and so on. Among them, the frame difference method refers to the use of pixel-base...

Claims

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Application Information

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IPC IPC(8): G08G1/01G06K9/66
Inventor 曹先彬吴长侠兰金鹤汪中林人俊宁博
Owner UNIV OF SCI & TECH OF CHINA
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