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Image matting processing method and device

A processing method and a technology of a processing device, which are applied in the field of image processing, can solve problems such as poor matting effects, and achieve accurate and effective retention or matting operations

Pending Publication Date: 2022-03-15
BEIJING KYSTAR TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For this reason, the embodiment of the present invention provides a method and device for image matting processing to solve the problem in the prior art that it is difficult to obtain a video image with a clean background and the effect of matting is poor.

Method used

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  • Image matting processing method and device

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Embodiment

[0045] In the past, most of the keying algorithms were based on a relatively pure color (such as green). Since a pure background color has a large contrast with the foreground color, it is relatively easy to remove this pure background color. However, it is impossible to shoot a video with a pure background in the real scene environment. Due to various conditions (such as uneven light irradiation), the background color of the final video will have chromatic aberration, mainly in bright and dark areas. brightness is different. Whether it can well deal with the brightness difference and color difference in the light and dark areas is the key to evaluating the quality of a keying algorithm.

[0046] In order to deal with this color difference and brightness difference, this application makes improvements based on the following analysis:

[0047] The color of the entire background green cloth is relatively pure, so the main reason for the light and dark areas in the video to be p...

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Abstract

The embodiment of the invention discloses an image matting processing method and device, and the method comprises the following steps: 1, obtaining to-be-processed image information, and extracting a to-be-processed picture from the image information; 2, converting an image matting color in the background of the to-be-processed picture from an RGB format to a YUV format to obtain a first YUV object YUV1; 3, acquiring a pixel point to be matted in the picture to be processed, and converting the color of the pixel point to be matted from the RGB format to the YUV format to obtain a second YUV object YUV2; and step 4, performing calculation processing between the YUV2 and the YUV1, judging whether the color of the pixel point to be matted is foreground color or background color, and when judging that the color of the pixel point to be matted is background color, digging out the pixel point to be matted.

Description

technical field [0001] Embodiments of the present invention relate to the field of image processing, and in particular to an image keying processing method and device. Background technique [0002] "Keying" has a professional term in the film and television production industry called "green screen keying". It refers to when the actors cannot reach the shooting scene, or cannot make the background required by the plot, the actors shoot alone in the studio with a green screen, and then use keying to combine with the exterior or special effects scenes. The principle is similar to the "suspension photo" produced by PS, except that the portrait in the photo is replaced by a coherent character performance in the video. [0003] With the development of the film and television industry, the requirements for "keying" technology are getting higher and higher. In the past, keying technology was only used in the post-processing of movies. In recent years, the application of keying tec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/11G06T7/194G06T7/90G06T3/00H04N9/67
CPCG06T7/11G06T7/194G06T7/90H04N9/67G06T2207/10004G06T2207/10016G06T2207/10024G06T3/04
Inventor 肖戈孙冰晶
Owner BEIJING KYSTAR TECH CO LTD
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