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A Method for Quality Evaluation of Video Stream

A technology for video quality and quality evaluation, applied in the field of communication, can solve the problems of inability to accurately obtain the real video distortion degree, and it is difficult for the receiving end to obtain the original video sequence information, etc., to achieve the effect of objective evaluation, flexible application and high precision

Inactive Publication Date: 2017-03-08
STATE GRID CORP OF CHINA +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The video quality assessment methods of full-reference type and partial-reference type usually need to refer to all or part of the information of the original video sequence, but in practical applications, it is often difficult for the receiver to obtain the information of the original video sequence
The non-reference type video quality assessment method does not need to transmit any information of the original video sequence, and can directly estimate the degree of video distortion based on some distortion characteristics of the video stream received by the receiving end. This type of method is still in the research stage , cannot accurately obtain the real video distortion degree, and its application has certain limitations

Method used

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  • A Method for Quality Evaluation of Video Stream
  • A Method for Quality Evaluation of Video Stream
  • A Method for Quality Evaluation of Video Stream

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0142] This embodiment is a method for accurately detecting the objective quality of a video stream transmitted through a network. The hardware system used in the method includes: at the sending end, the video code stream objective quality evaluation device and the video code stream described in the embodiment of the present invention Streaming device connections such as Figure 7 As shown; at the receiving end, the video code stream receiving device is connected with the video code stream objective quality evaluation device described in the embodiment of the present invention, such as Figure 7 shown.

[0143] as attached Figure 7 with attached Figure 4 Shown, the basic principle of the method described in the present embodiment is:

[0144] At the sending end, first, determine the video category and specific sequence used in the current test, and select the corresponding encoding control parameters according to the selected video compression method;

[0145] Then, use ...

Embodiment 2

[0184] This embodiment is an evaluation method for accurately detecting the compression quality of a video encoder in a video communication system. The hardware system used in the method includes: the video code stream objective quality assessment device described in the embodiment of the present invention is connected to the video encoder device, as shown in the attached Figure 8 shown.

[0185] as attached Figure 8 And attached image 3 As shown, the method described in the embodiment includes:

[0186] First, the video stream generation unit in the video code stream objective quality assessment device generates the original video sequence according to the input test video category and parameters;

[0187] Then, send the sequence to the video encoding device to be evaluated to generate a compressed video stream;

[0188] Then, the compressed video stream is sent back to the video code stream objective quality assessment device, and after being processed by the video st...

Embodiment 3

[0192] This embodiment is an evaluation method for accurately detecting the video reconstruction quality of a video playback and display device in a video stream reconstruction stage in a video communication system. The hardware system used in the method includes: the video code stream objective quality assessment device described in the embodiment of the present invention is connected to an independent playback and display device, as shown in the attached Figure 9 shown.

[0193] as attached Figure 9 image 3 As shown, the method described in this embodiment includes:

[0194] First, the original video sequence is generated by the video stream generation unit in the video code stream objective quality assessment device according to the input test video category and parameters;

[0195] Then, the sequence is sent to the video stream reconstruction and display unit, and the unit controls an external independent video playback and display device to play the original video s...

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Abstract

The invention provides a quality assessment method and device for video streaming. The quality assessment method for the video streaming comprises steps as follows: first compressed video streaming generated due to processing of an original video sequence is acquired; the first compressed video streaming carries a sequence identifier and an image serial number which correspond to the original video sequence; the original video sequence corresponding to the first compressed video streaming is acquired according to the sequence identifier; original compressed video streaming corresponding to the original video sequence is acquired according to the sequence identifier and the image serial number; the video quality of the first compressed video streaming is assessed according to the first compressed video streaming and the original compressed video streaming. With the adoption of the quality assessment method and device for the video streaming, full-reference assessment on the objective video quality of the video streaming at different processing phases can be realized under the condition that the network transmission burden is not increased.

Description

technical field [0001] The invention relates to multimedia communication technology in the field of communication, in particular to a method and device for evaluating the quality of video streams. Background technique [0002] At present, with the rapid development of the Internet and mobile communication networks, people's demand for video services continues to increase, and services such as video surveillance, video conferencing, and online video playback are growing day by day. The basic feature shared by all kinds of video processing and transmission systems is: the video stream generated by one node is transmitted to another node through the network. The links that affect the quality of the video stream include the generation, transmission and reconstruction stages of the video stream. Due to the huge amount of original video source data, lossy compression standards are usually used in the generation stage of video streams to greatly reduce the amount of data to be tra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N17/00
Inventor 罗功银周城李新德周正冯伟东叶露王俊曦高志荣熊承义田昕罗一苇董亮贺易张勇孙俊詹鹏汤弋刘方方李磊陈家璘李臻立焦翰琳
Owner STATE GRID CORP OF CHINA