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Movement detecting method

A technology of motion detection and motion information, which is applied in closed-circuit television systems and other directions, can solve problems such as misjudgment of the monitoring system, unfavorable abnormal behaviors found, and impact on the accuracy of system motion detection, so as to improve accuracy and reliability and reduce false positives and the effect of the possibility of false positives

Active Publication Date: 2008-03-12
BEIJING VIMICRO ARTIFICIAL INTELLIGENCE CHIP TECH CO LTD
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AI Technical Summary

Problems solved by technology

Generally speaking, the monitoring area of ​​the camera is not necessarily the area of ​​interest. If there are moving objects in the non-interest area, for example, tree branches swinging with the wind, it may also cause misjudgment by the monitoring system, which will affect the system performance. Motion detection accuracy, if only the area of ​​interest is monitored, this is extremely detrimental to timely detection of abnormal behavior

Method used

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Embodiment Construction

[0027] Generally speaking, the motion detection method of the present invention divides the entire monitoring area into a plurality of monitoring sub-areas, and sets corresponding thresholds and weights for each monitoring sub-area according to the sensitivity of each monitoring sub-area, specifically , that is, for monitoring sub-regions with higher sensitivity, set smaller thresholds and larger weights, and for monitoring sub-regions with lower sensitivity, set larger thresholds and smaller weights to comprehensively Judging whether there is motion in the entire monitoring area can effectively reduce the possibility of missing and false alarms of the monitoring system, and improve the accuracy and reliability of motion detection of the monitoring system.

[0028] FIG. 1 below illustrates in detail the motion detection method of the present invention.

[0029] Step 1: Determine the reference frame image and determine the current frame image.

[0030] Just like a reference ob...

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Abstract

The invention discloses a movement detecting method, comprising the steps as follow: the first step, the picture of a reference frame is determined and the pictures of a current frame is determined; the second step, a monitoring area is divided into a plurality of sub-areas, and the corresponding valve value and the weight are respectively set for each monitoring sub-area according to the sensitivity of each monitoring sub-area; the third step, the movement information of the current frame and the reference frame inside each sub-area are acquired; and the fourth step, the movement detection inside the whole monitoring area is determined according to the movement detecting result of each sub-area, the weight of each sub-area and the valve value of the whole monitoring area. As the invention is added with the weight information, all the sub-areas are combined organically, thereby ensuring the movement detecting result of the whole monitoring area more accurate and reliable.

Description

technical field [0001] The invention relates to the field of digital image processing, in particular to a motion detection method. technical background [0002] For the safety of people's production and life, automatic monitoring systems have been widely used to automatically monitor areas set by users. A general monitoring system includes an image capture unit, an image processing unit and a display unit. Specifically, the image capture unit is usually a camera, which is used to capture images captured in the set area, and the image processing unit may be an image processing chip, which processes the image data captured by the camera, and the The display unit may be a display, which is used to display the image processed by the image processing chip, so as to achieve the purpose of monitoring. Usually, the monitoring system may also include an image storage area for storing image data of the monitoring area, so that people can view it conveniently. In many cases, there w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/18
Inventor 吴大斌
Owner BEIJING VIMICRO ARTIFICIAL INTELLIGENCE CHIP TECH CO LTD
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