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Method and device for replacing background target

A target and background technology, applied in character and pattern recognition, image analysis, instruments, etc., can solve problems such as inability to replace background targets with high quality

Inactive Publication Date: 2012-07-11
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] The present invention aims to provide a background target replacement method and device to solve the problem that the background target cannot be replaced with high quality

Method used

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  • Method and device for replacing background target
  • Method and device for replacing background target

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] figure 1 It is a preferred flow chart of a background object replacement method according to an embodiment of the present invention, including the following steps:

[0039] S102, performing binarization processing on the original image to obtain a binarized image;

[0040] S104, performing edge detection on the binarized image;

[0041] S106. Calculate and obtain a target template according to the edge contour map obtained by the edge detection and the binarized image;

[0042] S108, comparing the target template with the original image, and extracting the foreground target and replacing the background target according to the comparison result.

[0043] In this preferred embodiment, the scheme of edge detection on the binarized image is adopted, which solves the problem that the prior art is sensitive to illumination changes and depends on the shape and number of moving objects, and cannot extract foreground objects well, so as to realize background The problem of ta...

Embodiment 2

[0052] figure 2 It is a preferred structural block diagram of a background target replacement device according to an embodiment of the present invention, including: a processing unit 202, which is used to perform binarization processing on an original image to obtain a binarized image; an edge detection unit 204, which is used to process the binary image The valued image is subjected to edge detection; the calculation unit 206 is used to calculate the target template according to the edge contour map obtained by the edge detection and the binarized image; the comparison unit 208 is used to compare the target template with the original The images are compared, and the foreground target is extracted and the background target is replaced according to the comparison result.

[0053] In this preferred embodiment, the scheme of edge detection on the binarized image is adopted, which solves the problem that the prior art is sensitive to illumination changes and depends on the shape ...

Embodiment 3

[0062] image 3 It is another structural block diagram of an apparatus for replacing background objects according to an embodiment of the present invention, including the following parts: a preprocessing module 302 , a processing module 304 and an output module 306 .

[0063] The preprocessing module 302 includes: a module for restoring input data to a picture 3021 and a denoising processing module 3022, wherein the denoising processing module 3022 performs processing with an image expansion function and an image erosion function respectively.

[0064] The processing module 304 includes: a grayscale conversion module 3041 for color pictures, an edge detection module 3042 for grayscale images based on the Canny operator, a binarization module 3043 for grayscale images, a target template creation module 3044 and a color filling module 3045.

[0065] Among them, the binarization processing module 3043 and the edge detection module 3042 of the grayscale image both need to set the ...

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Abstract

The invention discloses a method and a device for replacing a background target. The method comprises the steps of binarizing an original image to obtain a binarized image; performing edge detection for the binarized image; calculating and obtaining a target template according to an edge contour map obtained by the edge detection and the binarized image; and comparing the target template with the original image and extracting a foreground target and replacing the background target according to the comparative result. The invention solves the problem that in the prior art, because the target is sensitive to the illumination change and relies on the shape and number of the mobile targets, the foreground target cannot be extracted well to replace the background target.

Description

technical field [0001] The present invention relates to the communication field, in particular, to a background object replacement method and device. Background technique [0002] Today's mobile communication has entered the 3G era, what we need is faster and more powerful communication services. The video function of mobile phones has been realized for a long time, but sometimes a single background in the video process cannot meet the requirements of operators and customers, and the invention of background replacement has not yet been developed in the industry. [0003] Chroma key technology: Chroma key technology, also known as blue screen technology, is to distinguish the foreground and background according to the special tone information of the background color by shooting objects on the background of the same color, so as to achieve the purpose of automatically removing the background and retaining the foreground. Widely used in dynamic background compositing for broad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/46G06T7/00G06T7/20
Inventor 傅力张震玮王东瞿中
Owner ZTE CORP
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