Video image compression method

A compression method and technology of video images, applied in the field of video coding, can solve problems such as unproposed solutions, achieve the effect of maintaining subjective quality and reducing coding bit rate

CN104125471AActive Publication Date: 2014-10-29成都瑞博慧窗信息技术有限公司
4 Cites 3 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2014-10-29

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

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.
Need to check novelty before this filing date? Find Prior Art

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. ...

Examples

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 through saliency analysis in the H.265 code stream compression domain from the perspective of huma...