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Method and device for evaluating video quality

A technology for video quality and evaluation devices, applied in television, electrical components, image communication, etc., to achieve high correlation effects

Active Publication Date: 2010-04-14
ZHEJIANG UNIV
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Problems solved by technology

[0017] 4. The distortion whose distortion intensity changes dynamically is easier to be perceived by the human eye than the distortion whose distortion intensity is statically unchanged

Method used

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  • Method and device for evaluating video quality
  • Method and device for evaluating video quality
  • Method and device for evaluating video quality

Examples

Experimental program
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specific Embodiment approach

[0033] The video quality assessment method includes: obtaining the subjective spatial domain distortion from the objective spatial domain distortion of the tested video sequence relative to the reference video sequence; obtaining the subjective time domain change from the subjective spatial domain distortion, and according to the subjective Time-domain variation to evaluate video quality. Its specific implementation is as follows:

[0034] Let the set of all frames in the tested video sequence be N, and the set of all pixels in each frame image be I. Any pixel in the nth frame in the tested video sequence is denoted as S i，n (i∈I, n∈N), the pixel at the corresponding position in the previous frame (n-1) is S i，n-1 , where the pixel at the corresponding position in the next frame (n+1) is S i，n+1 . S i，n The corresponding pixel in the reference video sequence is R i，n . Correspondingly, S i，n-1 and S i，n+1 corresponding to R i，n-1 and R i，n+1 .

[0035] Si，n relativ...

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Abstract

The invention provides method and device for evaluating video quality. The method for evaluating video quality comprises the following steps: obtaining subjective space domain distortion by the objective space domain distortion of a detected video sequence relative to a reference video sequence; obtaining subjective time domain change by the subjective space domain distortion and evaluating the video quality according to the subjective time domain change. The device for evaluating video quality comprises a subjective space domain distortion generating module, a subjective time domain change generating module and a video quality generating module. A video quality evaluating result of the invention has higher relevance with an evaluating result of a method for evaluating subjective video quality.

Description

technical field [0001] The invention relates to the field of multimedia communication, in particular to a method for processing video quality. Background technique [0002] At present, with the rapid development of multimedia technology and the rapid development of various video processing technologies, people's demand for high-quality video is also increasing. Video quality assessment technology, as a criterion for judging the pros and cons of various video processing technologies, is becoming more and more important. [0003] Video quality assessment plays an important role in video compression, enhancement processing, communication and other fields, and it plays a role in identifying and judging various video processing technologies. For example, by evaluating the quality of compressed and reconstructed videos obtained under different video coding strategies, the degree of distortion introduced by each coding strategy can be compared, thereby assisting in selecting the o...

Claims

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Application Information

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IPC IPC(8): H04N17/00
Inventor 虞露赵寅
Owner ZHEJIANG UNIV
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