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Real-time extraction and update method of background image in motion video

A background image and update method technology, applied in image analysis, image data processing, instruments, etc., can solve the problems of untimely background conversion and long model building time, and achieve the effect of fast and accurate detection and tracking

Inactive Publication Date: 2010-06-16
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

However, this background model has the disadvantages of long model establishment time and untimely background conversion.

Method used

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  • Real-time extraction and update method of background image in motion video
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  • Real-time extraction and update method of background image in motion video

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Embodiment Construction

[0022] The real-time extraction and update method of the background image in the dynamic video of the present invention is: using the different change characteristics of the background image and the moving target image in the time domain, constructing a stable matrix function of the image, and automatically distinguishing the background point from the front through the change of the stable matrix elements. Scenic spots, and set the upper and lower saturation values ​​for the stability matrix, so that the algorithm can automatically perceive the sudden change of the background in a short time, so as to quickly establish the background image model and update it in real time.

[0023] The method of the present invention is specifically described as follows:

[0024] The key to moving target detection is the description model of the background image, that is, the background model, which is the basis of the background subtraction method to segment the foreground target. At time t, ...

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Abstract

The invention discloses a real-time extraction and update method of background image in motion video, belonging to the technical field of digital image processing. The method utilizes the different change properties of the background image and a motion object image in the time domain to construct the stable matrix function of the image, automatically distinguishes background spots and foreground spots through the change of factors in the stable matrix, sets the highest and lowest saturation values for the stable matrix, so that the algorithm can automatically perceive the sudden change of the background in a short time, thus quickly establishing a background image model and carrying out real-time update. The invention has the beneficial effect that the method can quickly obtain the stable background image so as to quickly and accurately accomplish detection of the motion object.

Description

technical field [0001] The invention belongs to the technical field of digital image processing, and relates to a technology for extracting and updating static background images in dynamic videos, specifically extracting still images in video scenes in real time for subsequent detection and tracking of moving objects. Background technique [0002] Moving object detection based on dynamic image sequences is an important topic in the field of applied vision research. Capturing and detecting moving objects in video sequences has a wide range of applications in the fields of visual monitoring, traffic management, and robot navigation. A key link in detecting moving objects is to extract the static background in the scene in real time. [0003] The principle of moving object detection is to first obtain the still background image of each frame of image in the scene, and then subtract the corresponding background image from each frame of image, and the subtracted result is the mov...

Claims

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Application Information

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IPC IPC(8): G06T7/20G06T7/215G06T7/254
Inventor 郝志成鲁剑锋
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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