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Method and device for eliminating noise in motion detection

A motion detection and noise technology, used in color TV parts, TV system parts, TVs, etc., can solve problems such as short-term and system false alarms, and achieve the effect of eliminating noise and improving accuracy.

Active Publication Date: 2013-03-27
VIMICRO ELECTRONICS CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the actual monitoring scene, objects that should be used as the background often have short-term motion phenomena, such as: shaking leaves, rippling water waves, etc. If the above method is used, these objects will be detected as moving objects, which is As a result, there are many noisy objects in the final detected moving objects, which may cause the system to report false alarms

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  • Method and device for eliminating noise in motion detection
  • Method and device for eliminating noise in motion detection
  • Method and device for eliminating noise in motion detection

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Embodiment Construction

[0070] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0071] The basic idea of ​​the present invention is: when a moving object is detected for the first time, the moving object is noise by default, if the moving object is detected in consecutive N frames of images, then the moving object If the similarity of the motion state satisfies the preset condition, it is confirmed that the moving object is a real moving object; otherwise, the moving object is still considered to be noise.

[0072] Wherein, the motion state similarity may be position similarity, or speed similarity, or position similarity+speed similarity.

[0073] figure 2 The flow chart of eliminating noise in motion detection provided by the embodiment of the present invention, such as figure 2 As shown, the specific steps are as follows:

[0074] Step 200: Set the detection interval frame number N.

[0075] Step 201: Re...

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Abstract

The invention discloses a method and a device for eliminating noise in motion detection. The method comprises the following steps: carrying out motion detection and tracking to each frame image in a video sequence; when a moving object is detected for the first time, defaulting the moving object as noise; if the moving object is detected in a continuous N-frame image, calculating the motion state similarity of the moving object in the continuous N-frame image, judging whether the motion state similarity satisfies preset conditions; if the motion state similarity satisfies the preset conditions, determining the moving object as a real moving object; and if the motion state similarity does not satisfy the preset conditions, determining the moving object as the noise, wherein N is a preset positive integer. The invention can eliminate the noise in the movement detection and improve the motion detection accuracy of.

Description

technical field [0001] The invention relates to the technical field of video monitoring, in particular to a method and device for eliminating noise in motion detection. Background technique [0002] Currently, video surveillance systems are widely used. The objects of intelligent video monitoring and retrieval are mostly videos taken by still cameras, and the analysis objects are mainly moving objects that are different from the background in the video. Therefore, the detection and tracking method of moving objects is the most basic and core technology in intelligent video surveillance and retrieval systems. [0003] figure 1 Flowchart for existing motion detection and tracking, such as figure 1 As shown, the specific steps are as follows: [0004] Step 101: Receive a video sequence. [0005] Each frame image of the video sequence is processed as follows: [0006] Step 102: Calculate d k (j)=I k (j)-B k (j). [0007] Wherein, k is the frame number of the current fr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/21H04N5/14
Inventor 黄英高飞
Owner VIMICRO ELECTRONICS CORP