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Method and device for obtaining image foreground area in live broadcast scene

A technology for acquiring images and foreground areas. It is used in image analysis, image data processing, instruments, etc. It can solve the problems of time-consuming single-frame video processing and the inability to meet the real-time requirements of live broadcast scenes. There are differences in consistency and stability, and the effect of low computing power requirements

Active Publication Date: 2021-08-27
BEIJING VHALL TIME TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] This application provides a technical solution for obtaining the foreground area of ​​an image in a live broadcast scene. Under the premise of local deployment in the CPU environment of a personal PC-level user, it can solve the problem that the general image segmentation algorithm takes too long to process a single frame of video at high resolution. , unable to meet the real-time requirements of the live broadcast scene

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  • Method and device for obtaining image foreground area in live broadcast scene
  • Method and device for obtaining image foreground area in live broadcast scene
  • Method and device for obtaining image foreground area in live broadcast scene

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Embodiment Construction

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of this application.

[0031] In the solution of this application, by down-sampling the original image, the processing of the high-resolution original image is converted into the processing of a low-resolution thumbnail, and, according to the characteristics of the live broadcast, the preset segmentation area, It can realize fast image processing in the personal PC-level user CPU environment; in addition, skin color detection, motion estimation, etc. are added to feedback and adjust the segmentation ...

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Abstract

The invention relates to a method and a device for obtaining an image foreground area in a live broadcast scene, and the method comprises the steps: carrying out the down-sampling processing of an original image frame, and zooming the original image frame to a thumbnail; performing foreground segmentation on the thumbnail according to preset foreground segmentation region parameters to form a first foreground segmentation mask; amplifying the first foreground segmentation mask to form a mask of the original image frame; and performing dot multiplication operation on the original image frame and the mask of the original image frame to obtain an image foreground area. According to the method and the device provided by the invention, the video image frame can be quickly segmented in a down-sampling and segmentation region presetting manner, and the real-time requirement of a live broadcast scene is met.

Description

technical field [0001] The present application relates to the field of online live broadcast, and in particular to a method and device for acquiring an image foreground area in a live broadcast scene. Background technique [0002] In online classrooms or live video broadcasting scenarios, users may need to cover the background of the live broadcast room due to personal privacy considerations, or want to change the background of the live broadcast room because there is no green screen condition. This technically requires the extraction and matting of the foreground area, and the current mainstream technical means with better results are based on deep learning algorithms. [0003] However, the training of deep learning models requires a large amount of high-quality labeled data and a huge amount of calculation, which puts extremely high requirements on hardware computing performance, especially GPU (Graphics Processing Unit, Graphics Processing Unit) configuration, so most mod...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/194G06T7/11
CPCG06T7/11G06T7/194
Inventor 夏洋黎雄兵郝付壮刘声华宋道明
Owner BEIJING VHALL TIME TECH CO LTD