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Method for evaluating Internet video quality, device and system thereof

A quality assessment and video quality technology, applied in the video field, can solve problems such as difficult acquisition, storage, and calculation, unfavorable monitoring and comparison, and increasing the impact of video source video quality

Inactive Publication Date: 2009-06-03
SNAPTRACK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] (1) The reference source of the model is an unencoded video sequence, and the measured stream is a decoded video sequence. The whole method requires a special test sequence, and the data volume is huge, and the acquisition, storage, and calculation are very difficult, which is not conducive to Real-time field monitoring and comparison
In addition, the reference source is an unencoded video sequence, which also increases the impact of the video source on the video quality of the network video
[0010] (2) Both PSNR and MSE are based on statistical and average calculations of pixel gray values, ignoring the impact of image content on the human eye, so they cannot fully reflect the quality of the image
Separate processing of static images and timing relationship evaluation can only reflect the quality of video one-sidedly

Method used

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  • Method for evaluating Internet video quality, device and system thereof
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  • Method for evaluating Internet video quality, device and system thereof

Examples

Experimental program
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Embodiment 1

[0035] An embodiment of the present invention provides a network video quality evaluation system, which is suitable for network-level evaluation by converting the object of inspection from an image sequence into a code stream message carried by the network, such as figure 1 As shown, the system can include:

[0036] Encoding compression module 101, for encoding and compressing the input video signal;

[0037] The decoding measurement module 102 is used to use the packetized video stream compressed by the encoding and compression module as a reference image, and the packetized video stream compressed by the encoding and compression module and transmitted to the destination through the network as a target image, respectively Decoding the reference image and the target image, comparing the decoded reference image and the target image, and measuring at least one basic video quality parameter;

[0038] An objective video evaluation module 103, configured to calculate a video quali...

Embodiment 2

[0043] On the basis of Embodiment 1, this embodiment of the present invention provides a network video quality assessment system, see figure 2 , the system can include:

[0044] Encoding compression module 201, for encoding and compressing the input video signal;

[0045] The decoding measurement module 202 is configured to use the input packet video stream compressed by the encoding compression module 201 as a reference image, and use the input packet video stream compressed by the encoding compression module 201 and transmitted to the destination through the network as a reference image. Decoding the reference image and the target image respectively, comparing the decoded reference image and the target image, and measuring various basic video quality parameters;

[0046] The objective video evaluation module 203 is configured to calculate video quality metrics according to various basic video quality parameters output by the decoding measurement module 202 .

[0047]The i...

Embodiment 3

[0066] see image 3 , the embodiment of the present invention provides a network video quality assessment method, which may include the following steps:

[0067] 310: Encoding and compressing the input video signal;

[0068] 320: Use the encoded and compressed packetized video stream as a reference image, and use the encoded and compressed packetized video stream that is transmitted to the destination through the network as the target image; respectively decode the reference image and the target image, and decode the decoded reference image Compared with the target image, measuring at least one basic parameter of video quality;

[0069] 330: Calculate a video quality metric index according to at least one basic video quality parameter.

[0070] The network video quality evaluation method in the embodiment of the present invention can be applied to network video services, network video publishing, transmission, and the like.

[0071] In the network video service, the quality...

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Abstract

The embodiment of the invention discloses a method for evaluating Internet video quality, a device and a system thereof, belonging to the technical field of video quality evaluation. The method comprises the steps: coding compression is carried out on video signals; package video stream which is processed by coding compression is taken as a reference picture, and package video stream which is processed by coding compression and reaches destination by network transmission is taken as a target picture; the reference picture and the target picture are respectively decoded and compared with each other, and all the video quality essential parameters are measured; video quality metric index is calculated according to the video quality essential parameters. The system comprises a coding compression module, a decoding measuring module and an objective video evaluation module. The device includes a decoding measuring module and an objective video evaluation module. By converting studied objects from video sequence into code stream message carried by network, the embodiment of the invention pays close attention to network transmission factors which affect the video quality, and is suitable for network level evaluation.

Description

technical field [0001] The invention relates to the field of video technology, in particular to a network video quality evaluation method, device and system. Background technique [0002] Video is a combination of time-sequenced still images, containing dual information in the spatial and temporal domains. Video quality is the quality of the picture presented during the video presentation. The current mainstream evaluation methods for video quality are mainly objective measurement methods. [0003] The objective measurement method is to objectively evaluate the video quality based on the principle of the human visual model, and give an objective evaluation score. The prior art proposes an objective measurement model for relative evaluation. The unencoded source video stream (as a reference video source) and the decoded video stream (corresponding to the video stream under test) are input into the measurement device. They are compared in the equipment, and the reference va...

Claims

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Application Information

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IPC IPC(8): H04N17/00H04N7/26H04N19/154
Inventor 谢文彪赵垠波罗应华肖赛峰
Owner SNAPTRACK