Method by integrating background model and three-frame difference to detect video background
A background model and three-frame difference technology, applied in the information field, can solve problems such as poor adaptability to sudden changes in background content, weak suppression, redundancy, etc., to overcome low calculation efficiency, high judgment accuracy, and calculation simple effect
Inactive Publication Date: 2010-11-10
华凯易佰科技股份有限公司
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[0006] The purpose of the present invention is to provide a method for video background detection by combining a background model and three-frame difference, which can not only overcome the redundancy and inefficiency of modeling with a single pixel in the traditional Gaussian background modeling method , and combined with the three-frame difference can overcome the shortcomings of the Gaussian model's weak suppression of noise and poor adaptability to sudden changes in background content
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[0023] The embodiments of the present invention will be described in detail below with reference to the drawings.
[0024] The method of combining the background model and the three-frame difference of the present invention to perform video background detection will be described in detail below with reference to the accompanying drawings.
[0025] Such as figure 1 Shown is the control flow chart of the present invention, which mainly includes the following steps: divide image blocks for each frame of image; establish a mixed Gaussian background model based on the image blocks; use three-frame difference to make further judgments for image blocks that do not match the background model; According to the difference between the background model and the three frames, it is determined whether each image block is a foreground block or a background block. The following is a detailed introduction.
[0026] Divide image blocks for each frame of image
[0027] In the algorithm, each frame of in...
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The invention discloses a method by integrating background model and three-frame difference to detect video background, which is characterized by comprising that: each frame image is divided into image blocks; an image block-based mixed Guass background model is established; the image block which is unmatched with the background model is further judged by three-frame difference way; and each image block is judged to be a foreground block or a background block according to the results of the background model and the three-frame difference. Through the method, not only the weakness of the traditional method that the system execution efficiency is low because the background model is established in a form of a single pixel can be overcome, but also a simple and effectively judging method is adopted to judge whether the macro block belongs to a foreground block or a background block, the calculation complexity is low, and the detection is correct.
Description
Technical field [0001] The present invention relates to the field of information technology, in particular to a method for combining a background model and three-frame difference to perform video background detection. Background technique [0002] Detecting dynamic targets from a video sequence is the primary and basic task of video surveillance. At present, many tracking systems rely on background extraction technology to detect moving targets, that is, compare the current input image frame with the reference background model, and judge the pixel according to the degree of deviation between the pixel value of the current frame and the background model Is it the target pixel or the background pixel. Then, the pixels that are considered to be targets are further processed to identify the target, determine the location of the target, and then achieve tracking. [0003] Background extraction techniques are widely used in tracking systems such as video surveillance. Many methods for...
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IPC IPC(8): H04N5/14
Inventor 罗笑南陆晴
Owner 华凯易佰科技股份有限公司