Convex hull analysis-based shielded vehicle detection method and system

A vehicle detection and vehicle technology, which is applied in road vehicle traffic control systems, image analysis, traffic control systems, etc., can solve problems such as low detection accuracy, narrow application range, and poor detection stability, so as to improve detection accuracy and apply The effect of expanding the range and improving the detection accuracy

Inactive Publication Date: 2017-11-10
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology

[0005] In view of the above defects or improvement needs of the prior art, the present invention provides a method and system for detecting occluded vehicles based on convex hull analysis, thereby solving the problems of low detection accuracy, narrow application range and poor detection stability in the prior art question

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  • Convex hull analysis-based shielded vehicle detection method and system
  • Convex hull analysis-based shielded vehicle detection method and system
  • Convex hull analysis-based shielded vehicle detection method and system

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[0046] 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 can be combined with each other as long as they do not constitute a conflict with each other.

[0047] like figure 1 As shown, an occluded vehicle detection method based on convex hull analysis, including:

[0048] (1) For the image to be detected that contains the vehicle, extract the vehicle foreground area, the vehicle foreground area is shown in Figure 2 (a);

[0049](2) outline and convex hull of the marked vehicle foreground area, Fig. 2 (b) is the convex hull area figure of the ve...

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Abstract

The invention discloses a convex hull analysis-based shielded vehicle detection method and system. The method is implemented by comprising the steps of extracting a vehicle foreground region of a to-be-detected image containing a vehicle; marking a profile and a convex hull of the vehicle foreground region; performing subtraction on the convex hull and the vehicle foreground region to obtain a convex difference region of the vehicle; if a ratio of the area of the convex difference region of the vehicle to the area of the convex hull is greater than a threshold, determining that the vehicle is shielded; and when the vehicle is shielded, obtaining a segmentation line by utilizing the convex hull and the convex difference region, and separating the shielded vehicle from an unshielded vehicle through the segmentation line. According to the method and the system, the shielding detection of the vehicle in the image is realized, and a possibly existent false detection result is corrected by utilizing the convex hull and a convex difference, so that the accuracy and stability of detection are improved.

Description

technical field [0001] The invention belongs to the field of image processing and pattern recognition, and more specifically relates to a method and system for detecting occluded vehicles based on convex hull analysis. Background technique [0002] With the rapid development of artificial intelligence and computer vision, intelligent transportation system has become the development direction of modern transportation system, and vehicle detection is an important part of intelligent transportation system. Vehicle detection is mainly divided into two parts. The first part is the real-time detection of vehicles based on video. The detection of moving objects based on video is an important research direction of computer vision research. The rapid and accurate separation of moving vehicle objects from images is the basis for further research. Vehicle tracking can obtain a lot of traffic information, which is widely used in traffic monitoring, traffic incident detection and other ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/32G06K9/34G06T7/11G06T7/194G06T7/64G08G1/017
CPCG06T7/11G06T7/194G06T7/64G08G1/0175G06T2207/30232G06T2207/10016G06V20/62G06V10/267G06V2201/08
Inventor 桑农苏伟高常鑫杨丽秦张明文
Owner HUAZHONG UNIV OF SCI & TECH
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