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Objective evaluation method of video quality

An objective evaluation method and video quality technology, applied in television, electrical components, image communication, etc., can solve problems such as subjective perception gaps, and achieve the effect of reducing gaps

Inactive Publication Date: 2013-01-16
INST OF COMPUTING TECH CHINESE ACAD OF SCI
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Problems solved by technology

[0008] The present invention aims to solve the problem that the objective evaluation method of video quality in the prior art cannot completely and truly measure people's subjective perception, and there is a gap between the evaluation given and human's subjective perception

Method used

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  • Objective evaluation method of video quality
  • Objective evaluation method of video quality

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Embodiment Construction

[0034] In order to make the object, technical solution and advantages of the present invention clearer, the video quality objective evaluation method according to an embodiment of the present invention will be further described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0035] Combine below figure 1 The shown block diagram of the video quality objective evaluation method according to a preferred embodiment of the present invention describes the method in detail, which mainly includes the following steps:

[0036] Structuring the video, i.e. dividing the entire video into video segments. The source video can be divided into a series of video clips using methods such as shot boundary detection. Since the source video and the video to be tested are strictly time-space aligned, the video to be tested is cut...

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Abstract

The invention provides an objective evaluation method of the video quality. The objective evaluation method comprises the following steps: 10) segmenting a source video and a video to be detected at the same time point to obtain a video segment; 20) respectively extracting video blocks of a video frame in a video segment from the source video and the video to be detected, calculating the similarity of the corresponding video block according to the space-time textural feature, wherein the space-time textural feature embodies the pixel difference between the pixels; 30) calculating the quality score of the video frame from the video to be detected according to the similarity of the corresponding video block; 40) calculating the quality value of the video segment from the video to be detected according to the quality score of the video frame from the video to be detected, and further calculating the quality score of the video to be detected. By adopting the method, the obtained quality score is more in line with subjective perceptions of people.

Description

technical field [0001] The present invention relates to the field of information engineering, in particular to the field of image and video analysis and processing. Background technique [0002] With the advent of the digital age, multimedia products such as images and videos play an increasingly important role in our daily life. In all fields of video processing: acquisition, display, storage, transmission, compression, etc., quality evaluation is required. The research on quality evaluation technology has become one of the important basic research topics in information engineering, which has both important theoretical significance and extensive application background. [0003] Generally, video quality evaluation methods are divided into subjective evaluation and objective evaluation. In subjective evaluation, the quality of the video is determined by the average score given by the observers. This method is undoubtedly the most accurate for evaluating the quality of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N17/00
Inventor 黄庆明许倩倩苏荔秦磊蒋树强
Owner INST OF COMPUTING TECH CHINESE ACAD OF SCI
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