Stereoscopic video asymmetric compression coding method based on human-eye visual characteristic

A technology of stereoscopic video and human vision, applied in stereoscopic systems, televisions, electrical components, etc., can solve problems such as poor flickering, and achieve the effect of reducing the amount of encoded data

Inactive Publication Date: 2010-10-20
NANJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

However, depending on the degree of asymmetry of the image quality, image quality that frequently alternates between viewpoints can produce undesirable flickering when viewed

Method used

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  • Stereoscopic video asymmetric compression coding method based on human-eye visual characteristic
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  • Stereoscopic video asymmetric compression coding method based on human-eye visual characteristic

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Embodiment Construction

[0020] ① At the beginning of encoding, the input video sequence is first down-sampled with the image group as the unit interval, and the resolution of each image group image in each viewpoint is alternately reduced. When a certain image group in the left viewpoint sequence maintains a high resolution When , the corresponding image group in the right view sequence at the same time is down-sampled to obtain a low-resolution image, and vice versa. The asymmetrical characteristics of the resolution of the left and right viewpoints are maintained at the same time, and within a period of time, the video quality of the left and right viewpoints is average. ② The left-view sequence is coded using the H.264 multi-mode multi-reference frame coding scheme, and reconstructed, which is used as a reference for right-view sequence coding. Among them, since the resolution of each image group image in the input sequence has changed alternately, when encoding, it is necessary to judge whether t...

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Abstract

The invention relates to a stereoscopic video asymmetric compression coding method based on human-eye visual characteristics, carrying out an improvement aiming to the problem that in the traditional asymmetric video coding, a viewpoint has higher quality, while another viewpoint has lower quality. The method comprises the following steps: applying the human-eye visual characteristic to the stereoscopic video compression coding; carrying out resolution switch at intervals by taking group of pictures (GOP) as a unit in a united multi-viewpoint video coding model through adopting an asymmetric coding method; alternately downsampling input image, so that each viewpoint crosswise contains the input image with high quality and the input image with lower quality; then carrying out the motion compensation predictive coding in the viewpoint, the parallax compensation predictive coding among the viewpoints point, and the united compesation predictive coding by combining the motion compensation predictive coding and the parallax compensation predictive coding; and selecting one with less prediction errors to be as a prediction mode, so as to improve the condition that if the viewpoint with lower quality is not the viewpoint where an observer plays a dominant role, the visual masking effect can be inoperative.

Description

technical field [0001] The present invention relates to the encoding and compression method of stereoscopic video, especially proposes a new asymmetric compression encoding method for the subjective visual characteristics of human eyes, and aims at the encoding structure in the joint multi-viewpoint video encoding model, and evenly distributes the degradation process from two viewpoints. Background technique [0002] Stereoscopic video generally consists of two or more video channels. During playback, two views of the same scene collected from slightly different angles are displayed, corresponding to two eyes of a person, forming binocular parallax, and relying on The human brain fuses these images into a meaningful three-dimensional image, which creates a sense of volume. With the development of computer, communication and network technology, the application prospect of stereoscopic video has become more and more extensive, including stereoscopic TV, free viewpoint video, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/26H04N7/50H04N13/00
Inventor 刘峰刘舒
Owner NANJING UNIV OF POSTS & TELECOMM
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