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Method for detecting change of video image output by computer

A video image and change detection technology, applied in the field of video processing, can solve problems such as poor performance, reduced correlation coefficient, and changes

Inactive Publication Date: 2013-01-09
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This scheme can get more accurate results for images with small noise, but when the noise is large, the similarity between images will be weakened, and the correlation coefficient will be reduced. Even if the image does not change, it will be misjudged as Change
[0007] In addition, when the blocks are relatively large, tiny object motions may be reflected in the correlation coefficient to be equal, and this scheme cannot determine such changes, resulting in no change in detection
[0008] To sum up, the existing video change detection schemes have certain limitations, especially for real-time detection applications of small changes in video images, and the performance is not good.

Method used

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  • Method for detecting change of video image output by computer
  • Method for detecting change of video image output by computer
  • Method for detecting change of video image output by computer

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Embodiment Construction

[0032] The present invention is divided into three modules on the whole, as figure 1 shown.

[0033] (1) Module 1: Color to grayscale

[0034] Since the R, G, and B components of the color image have a strong correlation, it is necessary to convert the color image into a grayscale image.

[0035] y=0.114*b+0.587*g+0.299*r,

[0036] Among them, y is the gray value (0≤y≤255), b, g, r are the blue component (0≤b≤255), the green component (0≤g≤255) and the red component (0≤g≤255) of the color image r≤255).

[0037] (2) Module 2: mean filtering

[0038]In order to reduce the interference of noise, carry on mean filtering to it, refer to formula (2.2).

[0039] f ( i , j ) = 1 W 2 Σ m = i i + W ...

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Abstract

The invention relates to a method for detecting the change of a video image output by a computer, belonging to the technical field of video treatment. The invention provides the method for detecting the change of the video image output by the computer, and according to the method, the real-time detection of the small change in the video image can be realized.

Description

technical field [0001] The invention relates to a method for detecting changes in computer output video images, which belongs to the technical field of video processing. Background technique [0002] With the development of multimedia technology, the application of video and image processing technology is becoming more and more extensive, and motion change detection technology is one of the important research directions. This technology aims to use reference images to judge whether there is motion change in the current image, and some applications need to further detect specific areas of motion changes. This technology is widely used, such as using change detection technology to quantitatively analyze and determine the surface change process in remote sensing images of the same region in different periods, to update geographic data, evaluate disasters, detect land use, etc.; for example, in the field of security, you can use Change detection of surveillance video to judge w...

Claims

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Application Information

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IPC IPC(8): G06T7/00
Inventor 陈喆殷福亮邹燕平
Owner DALIAN UNIV OF TECH