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Method for extracting regions of interest in real-time video communication

A technology of region of interest and extraction method, which is applied in the fields of digital video signal modification, image communication, two-way working system, etc. It can solve the problems of being easily affected by illumination changes, high computational complexity, and inaccurate extraction of regions of interest.

Active Publication Date: 2014-10-01
成都随锐云科技有限公司
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Problems solved by technology

[0007] The above methods have their own limitations, such as inaccurate extraction of the region of interest, susceptible to illumination changes, and high computational complexity.

Method used

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  • Method for extracting regions of interest in real-time video communication
  • Method for extracting regions of interest in real-time video communication
  • Method for extracting regions of interest in real-time video communication

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Embodiment Construction

[0043] In order to facilitate the understanding and implementation of the present invention by those of ordinary skill in the art, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the embodiments described herein are only used to illustrate and explain the present invention, but not to limit it. this invention.

[0044] see figure 1 , the technical scheme adopted in the present invention is: a method for extracting a region of interest in real-time video communication, comprising the following steps:

[0045] Step 1: Starting from the first frame of video image, acquire one frame of video image in sequence.

[0046] Step 2: Convert the frame image into a grayscale image and divide it into 16×16 macroblocks.

[0047] Step 3: Starting from the first macroblock, acquire one macroblock in sequence.

[0048] Step 4: Detect whether the macroblock belongs to the motion area, ob...

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Abstract

The invention discloses a method for extracting regions of interest in real-time video communication. The method includes the steps that motion regions and brightness regions in a video image are extracted, and the video image is divided into a structured texture region, a smooth texture region and a random texture region; according to the characteristic that human eyes are interested in the motion region, the high-brightness region and the structured texture region, different weights are set for motion information, brightness information and texture information, and finally the degrees of interest in all the regions by the human eyes are obtained. Based on the visual characteristics of the human eyes, the regions of interest in a video are extracted in a graded mode according to the different degrees of interest in the different regions in the video image by the human eyes, so that the extracted regions of interest are more meticulous and accurate, the method is beneficial for adopting different coding modes for the different regions, and the compression ratio of the video is improved.

Description

technical field [0001] The invention belongs to the technical field of digital video, and relates to a method for extracting a region of interest in real-time video communication. Specifically, based on the method of the present invention, the region of interest of the human eye can be extracted in a video, so as to select different compressions for different regions of the video. The purpose of relieving the conflict between video compression rate and video quality is Background technique [0002] With the rapid development of science and technology, video, as the main carrier of visual information, has penetrated into all aspects of people's lives. Coupled with the rapid development of the communication field in recent years, people no longer stop at the transmission of language signals when communicating, but hope to obtain more information through video communication. However, in real-time video communication, the bandwidth of the network is limited, so it is very impor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/167H04N7/14
Inventor 王中元朱婧雅周治龙
Owner 成都随锐云科技有限公司
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