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Video matting method and system based on mobile platform

A mobile platform and map-cutting technology, applied in the field of image processing, can solve problems such as poor accuracy and real-time performance, inability to realize live video cut-out on mobile devices, and poor map-cutting effect, and achieve the effect of lowering the threshold for use.

Active Publication Date: 2017-03-22
CHENDU PINGUO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, most of the mainstream video live broadcast matting software on the market are based on the traditional PC platform, which cannot realize the live video matting of mobile devices. The accuracy and real-time performance are poor, and when used in poor light scenes, the matting effect Poor and high cost of scene construction

Method used

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  • Video matting method and system based on mobile platform
  • Video matting method and system based on mobile platform
  • Video matting method and system based on mobile platform

Examples

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Embodiment Construction

[0043] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further elaborated below in conjunction with the accompanying drawings.

[0044] In this example, see figure 1 As shown, the present invention proposes a video matting method based on a mobile platform, including steps S01-S11.

[0045] S01, collecting video frame images by a camera on a mobile device.

[0046] S02. Select a piece of background image of the video frame image for color analysis and extraction to obtain the cutout background color of the current frame.

[0047] Among them, S0201, divide all pixels in the background image with a brightness value greater than or equal to 30 into three sets based on the maximum value of each channel component, and calculate the average value of each component of the background image and the average brightness of the set ;

[0048] S0202. Calculate and obtain the cutout background color of the cur...

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Abstract

The invention discloses a video matting method and a system based on a mobile platform. The mobile terminal comprises an image processor, a camera and a touch-type display screen, wherein the camera and the touch-type display screen are connected with the image processor respectively; the camera is used for acquiring a video frame image; the touch-type display screen is used for user operation, and the user selects and inputs a texture image through the touch-type display screen; the final image obtained through a graphics processing unit is presented to the user; and the graphics processing unit is used for carrying out calculation on the video frame image and the texture image to obtain the final image. Accurate matting for live video of the mobile device can be realized, a person can be quickly and accurately taken out from a background, accurate matting by the user can be carried out in a condition with dark ambient light, the shadow can be automatically removed, and accurate matting can be realized.

Description

technical field [0001] The invention belongs to the technical field of image processing, and in particular relates to a video cutout method and system based on a mobile platform. Background technique [0002] In recent years, with the popularization of smart terminal devices, video live broadcasting, especially mobile live broadcasting, has become very popular. Some mobile live broadcasting platforms and applications that gather beauties and handsome men, popular Internet celebrities, school girls and grassroots, etc. are very popular. Among them, the video beautification function has become a standard function of live broadcast applications, but the background matting function as an upgrade to the video beautification function needs to be improved. The background cutout function can help users replace the current live broadcast scene with their desired scene or location. Through this method, it can indirectly improve the quality of the anchor live broadcast and the user int...

Claims

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Application Information

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IPC IPC(8): G06T7/11G06T7/194G06T7/90
CPCG06T2207/10016
Inventor 张学成
Owner CHENDU PINGUO TECH
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