Three-dimensional video quality evaluation method

A stereoscopic video and quality evaluation technology, applied in the field of digital video, can solve problems that do not conform to the characteristics of human stereoscopic vision, do not take into account the time continuity of the stereoscopic video attribute, and do not take into account the depth characteristic index of the video, etc.

Active Publication Date: 2013-06-12
TIANJIN UNIV
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Problems solved by technology

[0006] (1) Directly apply the planar video quality evaluation method to the stereoscopic video quality evaluation, without considering the depth characteristic index of the video;
[0007] (2) Directly apply the two-dimensional or stereoscopic image quality evaluation method to the stereoscopic video ...

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Embodiment Construction

[0042] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0043] Aiming at the shortcomings of the existing technology, this method proposes an objective evaluation model of stereoscopic video quality based on motion information and disparity information. The model includes two evaluation indicators, namely, stereoscopic video quality (Video Quality Assessment, VQA) and stereoscopic video stereo (Video Stereo Sense Assessment, VSSA). Based on the characteristics of human vision and the principle of stereoscopic imaging, this method extracts the brightness features, motion features and structural features of the video; it also extracts the parallax feature that reflects the depth sense of the video. The evaluation model belongs to the full-reference stereoscopic video quality objective evaluat...

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Abstract

The invention discloses a three-dimensional video quality evaluation method which relates to the field of digital video. The three-dimensional video quality evaluation method comprises the steps of: obtaining a gradient structure similarity index of each subblock; extracting brightness information, movement information and structure information of each subblock on the basis of a human visual system, further figuring out a quality weight of each subblock; respectively obtaining a single-frame quality of a left visual point or right visual point by combining with the gradient structure similarity index and the quality weight of each subblock; obtaining a single-visual point video quality through the single-frame quality; based on the human three-dimensional visual system, endowing different weights to the video qualify of the left visual point or right visual point to obtain a quality value of a three-dimensional video; calculating an absolute difference chart of each frame of image of an original three-dimensional video and a distortion three-dimensional video; and calculating a peak signal to noise ratio of an original video absolute difference chart and a distortion video absolute difference chart to be used as a three-dimensional value of the three-dimensional video. According to the three-dimensional video quality evaluation method, the quality of the three-dimensional video is completely evaluated, and thus the evaluation quality is improved.

Description

technical field [0001] The invention relates to the field of digital video, in particular to a method for evaluating the quality of stereoscopic video. Background technique [0002] In recent years, digital video technology has developed vigorously, and stereoscopic video technology has gradually entered people's lives, and has become one of the most concerned information forms in people's daily life. However, the comfort of stereoscopic video content is directly related to the visual experience and physical health of the viewers, which has become the main restrictive factor for the rapid popularization of stereoscopic products. The stereoscopic video quality assessment method is crucial. [0003] Currently, stereoscopic video quality evaluation methods are roughly divided into two aspects: subjective evaluation and objective evaluation. Subjective evaluation is a system evaluation method that uses the subjects' direct reflection on the test video quality; however, the sub...

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Application Information

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IPC IPC(8): H04N17/00H04N13/00H04N7/26H04N19/154
Inventor 李素梅马辰阳侯春萍
Owner TIANJIN UNIV
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