Vehicle logo detection method and system based on two-layer classification

A detection method and marker technology, applied in the field of computer vision, can solve problems such as difficulty in case detection, missing suspect vehicles, and narrowing the scope of investigation

Active Publication Date: 2014-12-17
武汉睿智视讯科技有限公司
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Problems solved by technology

[0002] With the increasing number of motor vehicles on the road, there are more and more cases of traffic accidents or using motor vehicles as crime tools. Although traditional vehicle identification methods such as license plate recognition and vehicle color recognition can play a role in the investigation of suspected vehicles It has a great effect, but these methods cannot further narrow the scope of investigation, and due to the existence of phenomena such as changing vehicle colors and decked vehicles, traditional vehicle identification methods may miss suspect vehicles, causing difficulties in case detection

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  • Vehicle logo detection method and system based on two-layer classification
  • Vehicle logo detection method and system based on two-layer classification

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Embodiment Construction

[0071] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not constitute a conflict with each other.

[0072] Such as figure 1 As shown, the vehicle marker detection method based on two-layer classification of the present invention comprises the following steps:

[0073] (1) Train a vehicle marker image patch detector for detecting markers in the car windshield image:

[0074] (1.1) For each car windshield image in the training image set, obtain the vehicle marker area and the background area o...

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Abstract

The invention discloses a vehicle logo detection method based on two-layer classification. The method comprises the following steps: firstly acquiring a vehicle logo and background in a windshield image in a training data set, and then respectively training a vehicle logo image block detector and a vehicle logo image block classifier; for a test image, firstly acquiring gradient feature vectors of image blocks in the image, and acquiring a candidate vehicle logo image block by using the trained vehicle logo detector, and then computing a HOG (histogram of oriented gradients) feature vector, an LBP feature vector and a color histogram feature vector for the acquired candidate vehicle logo image block, splicing the computed vectors into the feature vector of the image block, and classifying by using the trained vehicle logo classifier to acquire the category of the vehicle logo. The vehicle logo detection process disclosed by the invention is simple and easy to implement, the detection accuracy is high, and the detection speed is fast.

Description

technical field [0001] The invention belongs to the technical field of computer vision, and more specifically relates to a method and system for detecting vehicle markers based on two-layer classification. Background technique [0002] With the increasing number of motor vehicles on the road, there are more and more cases of traffic accidents or using motor vehicles as crime tools. Although traditional vehicle identification methods such as license plate recognition and vehicle color recognition can play a role in the investigation of suspected vehicles It has a great effect, but these methods cannot further narrow the scope of investigation, and due to the existence of phenomena such as changing vehicle colors and decked vehicles, traditional vehicle identification methods may miss suspect vehicles, causing difficulties in case detection. Vehicle markers refer to the vehicle annual inspection label on the windshield of the vehicle, sun visors, vehicle ornaments, tissue boxe...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/62
Inventor 陈瑞军白翔王兴刚姚聪张新浩肖可伟
Owner 武汉睿智视讯科技有限公司
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