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A video image compression method

A compression method and video image technology, applied in the field of video coding, can solve problems such as high complexity of the method, poor subjective quality, and no solution proposed, so as to achieve the effect of reducing the coding bit rate and maintaining the subjective quality

Active Publication Date: 2016-01-20
成都瑞博慧窗信息技术有限公司
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Problems solved by technology

At present, the image ROI method mainly uses the color, brightness and other characteristics of the image to calculate the salience of the image, but the image ROI method does not use the motion characteristics of the video, so the image ROI method is not effective when it is directly applied to video detection.
However, there are few studies on video ROI methods, and there are disadvantages of high complexity of the method. The existing technology does not consider the texture features of the video and the integrity of the area of ​​concern of human vision, resulting in low compression rate or poor subjective quality.
[0004] Therefore, for the above-mentioned problems existing in related technologies, effective solutions have not yet been proposed

Method used

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Embodiment Construction

[0040] The following and accompanying appendices illustrating the principles of the invention Figure 1 A detailed description of one or more embodiments of the invention is provided together. The invention is described in connection with such embodiments, but the invention is not limited to any embodiment. The scope of the invention is limited only by the claims and the invention encompasses numerous alternatives, modifications and equivalents. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. These details are provided for the purpose of example and the invention may be practiced according to the claims without some or all of these specific details.

[0041] Since the goal of coding is to obtain higher compression efficiency under the same video quality, this study obtains the ROI image by performing saliency analysis in the H.265 code stream compression domain from the perspective o...

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Abstract

The invention provides a video image compression method. The method comprises the following steps: performing global motion estimation by using a motion vector field; partitioning local motion in a video; correcting an ROI (Region of Interest) image; performing video encoding based on the corrected ROI image. By adopting the video image compression method, an ROI in the video can be detected accurately and completely, the encoding bit rate is reduced, and meanwhile the subjective quality is kept.

Description

technical field [0001] The invention relates to video coding, in particular to a video image compression method. Background technique [0002] With the development of information technology, the amount of video information that people are exposed to in life is increasing. How to efficiently extract salient objects in video has attracted more and more researchers' attention. ROI (Region of Interest) has an important role in video signal processing. It has a wide range of applications, such as video retrieval, video compression, video surveillance, video tracking and other fields. In terms of video compression, since the video resolution is getting higher and higher, efficient video compression methods are also one of the research hotspots. At the same time, the video compression method combined with the human visual model is one of the key technologies of the next-generation video codec, so ROI, as an important aspect of the human visual model, is particularly important. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/527H04N19/567H04N19/167
Inventor 高冬
Owner 成都瑞博慧窗信息技术有限公司
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