Method and device for detecting moving target frequency
A moving target and frequency detection technology, applied in the field of image processing, can solve the problems of moving target extraction error, moving target frequency detection error, etc.
Active Publication Date: 2016-10-12
高前文
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However, due to the interference of the external environment, such as moving in and out of objects in the background, changes in lighting, etc., the background is constantly changing. If the corresponding background image is not updated in time, the background may be extracted as the foreground by the background subtraction method, resulting in The extraction of moving targets is wrong, which in turn causes detection errors in the frequency of moving targets
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[0061] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present invention. Rather, they are merely examples of apparatuses and methods consistent with aspects of the invention as recited in the appended claims.
[0062] figure 1 It is a flowchart of a method for detecting the frequency of a moving object according to an exemplary embodiment, and the method includes the following steps:
[0063] Step S101: Obtain the first frame of video image from the video image sequence.
[0064] During the frequency detection process of the moving object, the video surveillance equipment takes video images in the ob...
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The invention provides a method and a device for detecting moving target frequency. The method builds a background model in the form of a pixel value set on the basis of a first frame of a video image. In subsequent frames of the video image, the method chooses to rebuild or update the background model according to the type of a target pixel. Finally, the method counts the frequency of appearance of the target pixel as a foreground point of a corresponding frame of the video image and generates a moving target frequency thermal graph. When the background environment is disturbed, the background model is rebuilt or updated in the disturbed frame of the video image immediately by means of a corresponding updating strategy, which can integrate the interference of the background environment into the background model in time, so as to ensure the accuracy of the moving object extraction and further improve the accuracy of moving target frequency detection. The background model is a pixel value set built on the basis of neighborhood pixel values of the first frame of the video image, does not need complex value computation, facilitates construction or updating of the background model, and thus improves the efficiency of moving target frequency detection.
Description
technical field [0001] The invention relates to the technical field of image processing, in particular to a method and device for detecting the frequency of a moving object. Background technique [0002] The moving target frequency refers to the number of times a moving target appears in the observation area within a certain time span. By detecting the frequency of the moving target, the behavior law of the moving target can be analyzed. For example, in a shopping mall, the frequency of consumers appearing in a store can be detected, and the consumer's purchasing tendency can be analyzed, thereby facilitating the shopping mall to plan the distribution of shops. Of course, the frequency of the moving target Detection is also widely used in different fields such as transportation and banking, and is of great significance in industry analysis. [0003] Moving target frequency detection usually includes the following steps: video surveillance equipment captures video images in ...
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CPCG06T2207/10016
Inventor 史方周震雷章明
Owner 高前文