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Time-domain filtering method based on interested region motion compensation

A technology of region of interest and motion compensation, applied in the field of video coding and network transmission, can solve the problem of no better solution, achieve the effect of good viewing quality and eliminate temporal information redundancy

Inactive Publication Date: 2009-07-08
XI AN JIAOTONG UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

The key technology is the motion time domain compensation technology based on the region of interest, and there is no good solution yet

Method used

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  • Time-domain filtering method based on interested region motion compensation
  • Time-domain filtering method based on interested region motion compensation
  • Time-domain filtering method based on interested region motion compensation

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Embodiment Construction

[0025] refer to figure 1 As shown, the boundary of the region of interest (ROI) is first obtained by video segmentation technology, and the original video is divided into foreground and background. The motion estimation technology based on the region of interest (ROI) is used to obtain the motion trajectory of each pixel. After the motion trajectory is obtained, the high and low frequency frames of the foreground and background regions are obtained through motion compensation time domain filtering based on the region of interest (ROI), and the elimination Regional temporal information redundancy. The superimposed regional high and low frequency frames are sent to perform spatial wavelet transformation based on the region of interest (ROI), and at the same time, the obtained regional motion vector is subjected to motion vector coding. The wavelet coefficients in each frequency band corresponding to the region of interest (ROI) are adaptively lifted. The upgraded wavelet coeff...

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Abstract

The present invention discloses a movement compensation time domain filtering method based on interested area. The method adopts a video diving technique for obtaining the interested region ROI. The method adopts the movement technique of interested region ROI for obtaining the movement vector tree of foreground and background. The method adopts a movement estimation technique of boundary determination for obtaining the movement patch of each pixel. The method adopts a boundary transferring technique of interested region for obtaining the boundary of each stage of low-frequency frame. The method adopts a movement compensation time domain filtering technique of interested region ROI for eliminating time domain redundancy. The former video is divided into two independent regions. Each part can be singly processed. The extensible video coding of content based on interested content is realized through the method. When the code rate is lower, the content region which is interested to the people can be allocated with more code rate. The content of foreground area is clearer for obtaining a better viewing effect.

Description

technical field [0001] The invention belongs to the field of video coding and network transmission, and in particular relates to a region-of-interest-based motion estimation and motion compensation time-domain filtering technology. Background technique [0002] With the rapid development of the Internet today, people have higher and higher requirements for video streaming services. It is difficult for traditional video codec solutions to meet the diversity of user needs in terms of providing scalable content. In an image or video sequence, generally speaking, what people really care about is only part of the content, but in the past video codec standards, most of the encoding is frame-based, that is, for all the content in a frame of image All are handled in the same way. This will cause the quality of the entire frame image to be limited at low bit rates. For this reason, the method of content scalable coding based on region of interest (ROI) has become a research hotspot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/26H04N19/167H04N19/57H04N19/59H04N19/615
Inventor 兰旭光马雯薛建儒郑南宁王斌马政毕重远
Owner XI AN JIAOTONG UNIV
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