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A video summary and frequency technology, applied in the field of image processing, can solve the problems of irrelevant targets interfering with video browsing, interference, and distracting the attention of public security staff
Inactive Publication Date: 2013-05-08
信帧机器人技术(北京)有限公司
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[0004] In many cases, the public security organs only pay attention to one of the multiple extracted targets, and the appearance of other targets will distract the attention of the staff of the public security organs and cause interference.
[0005] To sum up, the video enrichment technology in the prior art has the technical problem of irrelevant objects interfering with video browsing
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Embodiment 1
[0065] Embodiment 1 of the present invention provides a video summary generation method, see figure 1 shown, including steps:
[0066] Step S110, perform foreground detection on each frame of image, and detect objects in the foreground.
[0067] Foreground detection can use various related algorithms, such as mixed Gaussian background model, SACON (SAMPLE CONSENSUS), etc., which are not listed in this embodiment.
[0068] Step S111 , tracking the detected target, and extracting the motion track of the target.
[0069] In the tracking process, various algorithms can also be used, such as relatively simple nearest neighbor method, multi-target tracking algorithm, edge tracking algorithm and so on.
[0070] Step S112, dividing the object into different categories according to the color information of the object.
[0071] Since different target objects often have different color characteristics, different targets can be distinguished according to the color information of each t...
Embodiment 2
[0077] Embodiment 2 of the present invention provides a video abstract generation method, see figure 2 shown, including steps:
[0078] Step S210: performing background modeling on the image of the intended area by using a mixture of Gaussian functions, and extracting objects in the foreground.
[0079] Use mixed Gaussian to model the background of the image and extract the moving foreground. The number of mixed Gaussian functions can be selected according to the video scene, and a Gaussian model can be trained separately for shadows.
[0080] The single Gaussian background modeling function is
[0081] f ( x ; μ ; σ ) = φexp ( - ( x - μ ) ...
Embodiment 3
[0150] Embodiment 3 of the present invention provides a device for generating a video summary, see image 3 , including a foreground detection module, a tracking module, a classification module and a generation module.
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Abstract
The invention provides a video abstract generating method which includes the following steps: conducting a foreground detection for each frame of image, detecting targets in the foreground, tracing the detected targets, extracting movement paths of the targets, dividing the targets into different categories according to color information of the targets, conducting path arrangement for each category of the targets, respectively overlaying the targets of different categories on corresponding backgrounds, and producing the video abstract. The invention further provides a video abstract generating device which comprises a foreground detecting module, a tracing module, a sort module, and a generating module, wherein the foreground detecting module is used for conducting the foreground detection for each frame of the image and detecting the targets in the foreground, the tracing module is used for tracing the target and extracting the movement paths, the sort module is used for dividing the targets into different categories according to the color information, and the generating module is used for conducting the path arrangement for each category of the targets, respectively overlaying the targets of different categories on corresponding backgrounds, and producing the video abstract. The method and the device are capable of effectively preventing the disturbance of irrelevant targets.
Description
technical field [0001] The present invention relates to the technical field of image processing, in particular to a method and device for generating a video summary. Background technique [0002] In the field of social public security, the video surveillance system has become an important part of maintaining social order and strengthening social management. However, video recording has the characteristics of a large amount of stored data and a long storage time. Looking for clues and obtaining evidence through video recording, and browsing related videos one by one according to the traditional method will consume a lot of manpower, material resources and time, and the efficiency is extremely low. The best time to solve the case. Therefore, in the video surveillance system, condensing the original video can quickly browse and lock the search object, which has important guiding significance for the police to speed up the speed of solving cases and improve the efficiency of so...
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