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Method, device and system for measuring video quality

A technology of video quality and quality, applied in the field of measurement, can solve the problems of low overhead, low accuracy of measurement results, and high performance requirements of downstream probes, and achieve the effect of reducing system overhead and improving measurement accuracy

Inactive Publication Date: 2010-07-28
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The bitstream no-reference evaluation model requires downstream probes to decode the video stream, which has higher performance requirements for downstream probes; while the parametric no-reference evaluation model does not need to decode the video, the overhead is small, but the accuracy of the measurement results is not high

Method used

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  • Method, device and system for measuring video quality
  • Method, device and system for measuring video quality
  • Method, device and system for measuring video quality

Examples

Experimental program
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Embodiment 1

[0028] Embodiment one, see figure 1 Detailed description, figure 1 It is a schematic flow chart of the method in this embodiment.

[0029] Step 101: The upstream probe sends a video stream of video quality compression impairment characterization values, and the video quality compression impairment characterization values ​​are pre-acquired by the upstream probe.

[0030] The pre-acquired video quality compression impairment characterization value is a value representing the degree of video quality damage during compression, and there are different characterization methods, such as a video quality model (VQM). The VQM value is a full-reference video quality assessment algorithm model, and the value range is 0-1. 0 means that the test video has no damage compared to the reference video, and 1 means that the damage of the test video relative to the reference video reaches a limit. The content of the video cannot be viewed. The video quality compression damage characterization ...

Embodiment 2

[0045] Embodiment two, see figure 2 Detailed description, figure 2It is a schematic flow chart of the method in this embodiment.

[0046] Step 201: The upstream probe obtains the video quality compression impairment characteristic value A of the video stream.

[0047] The upstream probe is arranged at the test video source to simulate the video server, the upstream probe actively generates the test video data flow, and the quality compression damage characteristic value A of the test video is known. The characteristic value A of the quality compression damage may be a VQM value or other characteristic values ​​similar to the VQM value representing the law, which will not affect the implementation of the embodiments of the present invention.

[0048] The probe is an independent device with corresponding functions (such as sending and receiving analog video streams, and analyzing video streams).

[0049] Step 202: The upstream probe sends the video stream and the video qual...

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Abstract

The embodiment of the invention discloses a method, a device and a system for measuring video quality, wherein the method comprises the steps that: an upstream probe sends a video stream of a video quality compression damage characteristic value which the upstream probe obtains in advance; a video quality objective evaluation algorithm module calculates a quality damage characteristic value which a network causes to the video stream; and a downstream probe obtains the quality damage characteristic value of the video stream at a receiving end according to the known video quality compression damage characteristic value of the video stream and the quality damage characteristic value caused by the network. The embodiment of the invention provides a method for enhancing the accuracy of measuring the quality of the video stream at the receiving end in case of small system overhead.

Description

technical field [0001] The invention relates to the measurement field, in particular to a method, device and system for measuring video quality. Background technique [0002] In scenarios where bandwidth is limited and transmission costs are high, there are two methods for video quality measurement in the prior art: a bitstream no-reference evaluation model and a parametric no-reference evaluation model. [0003] The bitstream no-reference evaluation model is as follows: the upstream probe sends the encoded and compressed video stream to the network, the downstream probe receives the video stream from the network, decodes the video stream containing compression damage and transmission damage, and uses the bit stream without The reference evaluation model is used to evaluate the video quality of the damaged video; the parametric non-reference evaluation model is as follows: after the downstream probe receives the video stream, it analyzes and counts the compression encoding a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N17/00H04N7/26
Inventor 熊礼霞于德雷
Owner HUAWEI TECH CO LTD
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