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A Perceptual Stereoscopic Video Coding Method Based on DOF's Just Perceptible Error Model

A technology of stereoscopic video coding and error model, applied in the field of video processing, can solve the problem of not fully reflecting binocular parallax redundant information, dependence, etc., and achieve the effect of maintaining stereoscopic perception quality, improving quality, and improving stereoscopic perception quality.

Inactive Publication Date: 2017-07-04
XIDIAN UNIV
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Problems solved by technology

This method achieves bit rate control by calculating the target bit rate, which is aimed at the view layer, picture group layer, frame layer, slice group layer and macroblock layer respectively, by offsetting a disparity vector at each pixel position of the left view point , the obtained pixel brightness contrast is used to calculate the JND model, it will be too dependent on the left view point, and the threshold obtained based on the left view is used for the right view, which cannot fully reflect the redundant information of binocular disparity

Method used

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  • A Perceptual Stereoscopic Video Coding Method Based on DOF's Just Perceptible Error Model
  • A Perceptual Stereoscopic Video Coding Method Based on DOF's Just Perceptible Error Model
  • A Perceptual Stereoscopic Video Coding Method Based on DOF's Just Perceptible Error Model

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Embodiment Construction

[0076] like figure 1 Shown, the realization steps of the present invention are as follows:

[0077] Step 1. Calculate the brightness JND model based on DOF and parallax

[0078] 1a) Calculate the original luminance JND model LJND(x,y);

[0079] (1a1) Find the average background brightness value of each block

[0080]

[0081] Among them, B(i,j) is the matrix shown below, we use this matrix to low-pass filter the image,

[0082]

[0083] (1a2) Obtain the original luminance JND model LJND(x,y) from the luminance masking effect:

[0084]

[0085] 1b) Obtain the Gaussian low-pass filter strength ε(x,y) according to the disparity information:

[0086] (1b1) Obtain the average depth value of each block according to the disparity information

[0087]

[0088] Among them, D(x, y) is the disparity information of the pixel (x, y);

[0089] (1b2) Calculate the filter strength ε(x,y):

[0090]

[0091] Among them, σ=10, τ=0.6, ψ=1;

[0092] 1c) Perform Gaussian ...

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Abstract

The invention belongs to the technical field of video processing, and particularly relates to a stereoscopic video perception and coding method for a just-noticeable error model based on DOF. The method includes the steps that (1) a brightness JND model based on the DOF and parallax is calculated; (2) a texture JND model based on parallax is calculated; (3) the JND model DJND (x,y) based on the DOF is obtained according to a nonlinear combination model; (4) the JND model based on the DOF is used for stereoscopic coding by resetting quantization parameters. By means of the method, time, space and inter-view redundancy can be effectively eliminated, S3D video image quality and vision comfort are successfully improved, a texture and an edge area keep a very comfortable vision effect, and a stereoscopic video code rate is greatly lowered on the premise that stereoscopic visual perception quality is improved and maintained.

Description

technical field [0001] The invention belongs to the technical field of video processing, and in particular relates to a perceptual stereoscopic video coding method, in particular to a perceptual stereoscopic video coding method based on a DOF just perceptible error model. Background technique [0002] With the rapid development of 3D stereoscopic video media technology, people's demand for realistic visual experience is gradually increasing. S3D video captured by stereo cameras can provide users with a more vivid experience. Unfortunately, compared with the real scene, S3D display often produces some distortions in the 3D effect, and these distortions can stimulate human binocular vision, causing discomfort and visual fatigue. They are usually caused by inappropriate screen parallax, large parallax differences, and unnatural blurring and sharpening. Therefore, for stereoscopic video perception coding, it is very necessary to effectively improve visual comfort and video qua...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/597H04N19/117H04N19/147H04N19/124
Inventor 郑喆坤薛飞刘红民崔玉金重圭尹仁龙权炳贤
Owner XIDIAN UNIV
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