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Hierarchical encoder of stereo video space based on grid and decoding method thereof

A stereoscopic video and hierarchical coding technology, applied in the field of communication, can solve the problems of not considering rotation, scaling, unable to reflect motion, discontinuous motion, etc., and achieve the effect of good display effect, smooth motion vector, and inconspicuous block effect.

Inactive Publication Date: 2009-08-19
XIDIAN UNIV
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Problems solved by technology

Since each block only considers simple translation and does not consider rotation, scaling and other movements, it does not reflect the actual movement
This makes the motion between blocks discontinuous, and in the case of low-bit encoding, the decoded image often shows obvious blockiness

Method used

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  • Hierarchical encoder of stereo video space based on grid and decoding method thereof
  • Hierarchical encoder of stereo video space based on grid and decoding method thereof
  • Hierarchical encoder of stereo video space based on grid and decoding method thereof

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Embodiment Construction

[0028] refer to figure 1 and figure 2 , the encoder of the present invention includes a left channel space scalable and a right channel space scalable encoding, which is divided into four levels, that is, the left channel space is scalable with a left base layer and a left enhancement layer; the right channel space is scalable with a left base layer and a left enhancement layer. Right base layer and right enhancement layer. The frame mode distribution of the encoder of the present invention is as follows image 3 shown. Among them, the I frame is directly coded by the method of DCT; the P frame selects one of time domain prediction, inter-layer texture prediction, and parallax prediction; the B frame jointly considers two predictions among these three predictions.

[0029] The left base layer consists of a down sampling unit 1, a first subtraction unit 2, a first mode selection switch 3, a second mode selection switch 7, a first transformation and quantization unit 4, a fi...

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Abstract

The invention discloses a stereo video space scalable encoder based on grid and a coding method thereof, belonging to the technical field of image compression, mainly used for solving the blocking effect problem of prior scalable encoders based on block method. The encoder firstly performs Delaunay triangle subdivision to a left low resolution reconstructed image to obtain a triangle grid; then a current coding image is predicted by using a motion compensation and a parallax compensation based on the grid, and the left channel low resolution reconstructed image is used as a referent image; left channel prediction images and right channel prediction images with different resolution are obtained by the motion information and the parallax information of grid nodes; the original image respectively subtracts the prediction images to obtain corresponding residual images; then the residual images are respectively coded to form a composite bit stream. The stereo video space scalable encoder has the advantages that not only the scalable function can be realized, the blocking effect problem caused by the block method can also be reduced; the decoder and the method can be used to enable a decoding end to display single camera and binocular video with different resolutions according to different needs.

Description

technical field [0001] The invention belongs to the technical field of communication and relates to video processing, in particular to a spatially scalable compression encoder for stereoscopic video, which can be used to enable a decoder to display monocular and binocular videos with different resolutions and sizes according to different requirements. Background technique [0002] With the development of multimedia, video service will be the main service of future communication. Video is divided into monocular video and binocular video. Monocular video can only provide flat information, but not deep images; binocular video can provide users with an immersive feeling by providing stereoscopic information, and users can obtain better visual effects, but the amount of binocular information Large, communication bandwidth resources are very limited, how to effectively compress stereoscopic video has become a prerequisite for the wide application of stereoscopic video. With the ...

Claims

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Application Information

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IPC IPC(8): H04N7/26H04N7/50H04N13/00H04N19/103H04N19/126H04N19/30H04N19/34H04N19/51H04N19/61
Inventor 卢朝阳胡星星郭大波焦卫东韩军功高全学李静
Owner XIDIAN UNIV
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