A motion detection-based method and system for crowd disturbance scene detection
A technology of motion detection and scene detection, applied in image analysis, instrumentation, computing, etc., can solve the problem of inaccurate detection of crowd disturbing scenes
Active Publication Date: 2020-08-07
湖北九感科技有限公司
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[0005] In order to overcome the above-mentioned problem of inaccurate detection of crowd disturbing scenes or at least partially solve the above problems, the present invention provides a method and system for detecting crowd disturbing scenes based on motion detection
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[0048] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
[0049] In one embodiment of the present invention, a motion detection-based crowd disturbance scene detection method is provided, figure 1 It is a schematic diagram of the overall flow of the crowd disturbance scene detection method based on motion detection provided by the embodiment of the present invention. The method includes: S1, performing foreground detection on the video to be detected to obtain the foreground area of the current frame in the video to be detected, and performing differential detection on the current frame to obtain In the moving area of the current frame, the first optical flow field of the current frame is obtained based on the optical flow al...
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The present invention provides a method and system for crowd disturbance detection based on motion detection. The method includes: performing foreground detection on the current frame in the video to be detected to obtain the foreground area of the current frame, and performing differential detection on the current frame to obtain the foreground area. The moving region of the current frame is obtained based on an optical flow algorithm to obtain the first optical flow field of the current frame; the foreground region, the moving region and the first optical flow field are fused to obtain a fusion region, and the The fusion area is divided into one or more area blocks; and whether the current frame is a crowd disturbance scene is detected according to the optical flow histogram of each area block. On the one hand, the present invention obtains a more accurate foreground by fusing the foreground area, moving area, and first optical flow field of the current frame in the video to be detected, thereby improving the accuracy of crowd disturbance detection; on the other hand, only based on the foreground The optical flow histogram is used to detect crowd disturbance scenes, which improves the running speed.
Description
technical field [0001] The invention belongs to the technical field of security monitoring, and more specifically, relates to a method and system for detecting crowd disturbing scenes based on motion detection. Background technique [0002] With the rapid development of economy, there are often peaks of people flow in public places such as railway stations, airports and shopping centers. Crowded crowds bring great hidden dangers to public safety. If the crowd can be detected and the abnormal behavior of the crowd can be found in time, corresponding solutions can be adopted to avoid accidents. [0003] At present, the analysis of crowd disturbance using video information is often based on the detection of abnormal human behavior. Some literatures have documented an abnormal behavior detection method based on the analysis of local statistical features of the sports field. By establishing a motion optical flow field to locate and analyze the local sports field, and further co...
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IPC IPC(8): G06K9/00G06T7/269G06T7/254
CPCG06T7/254G06T7/269G06V20/53
Inventor 雷帮军
Owner 湖北九感科技有限公司