Real-time video communication quality evaluation method

A technology for real-time video and quality evaluation, applied in image communication, television, electrical components, etc., can solve the problems of losing the meaning of real-time calls, not suitable for real-time video calls, and high cost.

Active Publication Date: 2019-01-01
宁波菊风系统软件有限公司
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AI Technical Summary

Problems solved by technology

[0003] In the existing technology, methods such as PSNR and SSIM are aimed at image quality evaluation, and require original images for comparison, which are not suitable for real-time video calls. Real-time video calls transmit local original video to the opposite end, which costs too much and loses the meaning of real-time calls

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Embodiment Construction

[0015] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0016] Such as figure 1 , the present invention provides a kind of quality assessment method of real-time video communication, establishes a quality model at the receiving end of real-time video communication, the output parameter of this quality model is the quality evaluation value, denoted as MOS, and input parameter includes time quality value and space The quality value, the time quality value is recorded as TMOS, the space quality value is recorded as SMOS, and the corresponding relationship between the output parameters and input parameters of the quality model is: MOS=TMOS a *SMOS b , a and b are preset weight coefficients, which are adjusted according to the principle of fluency priority or clarity priority, and the default values ​​of a and b are both 0.6;

[0017] During the real-time video call, at the receiving end of the real-t...

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Abstract

The invention relates to a real-time video communication quality evaluation method, and the method is characterized in that the method comprises the steps: firstly establishing a quality model, wherein the output parameters of the quality model is a quality evaluation value, MOS=TMOSa*SMOSb, and a and b are preset weight coefficients; calculating a time quality value TMOS at the receiving end of the real-time video communication during a real-time video call; calculating the SMOS at the transmitting end of the real-time video communication; inputting the obtained time quality value TMOS and the spatial quality value SMOS into the quality model, and calculating the quality evaluation value MOS during the real-time video call. Compared with the prior art, the method has the advantages of providing a real-time computing process integrated in the real-time video call process, realizing accurate evaluation of the quality of the real-time video call, and requiring a small additional calculation amount and few network resources. Computing and network resources are less than 1% faster than video calls.

Description

technical field [0001] The invention relates to a quality evaluation method of real-time video communication. Background technique [0002] With the rapid development of science and technology, video, as the main carrier of visual information, has penetrated into all aspects of people's lives. Coupled with the rapid development of the communication field in recent years, people no longer stop at the transmission of speech signals when communicating, but hope to obtain more information through video communication. In real-time video communication, due to the limited bandwidth of the network, there is currently no reliable automatic method for evaluating the quality of video calls, which can monitor the end-to-end quality of video calls in real time. [0003] In the existing technology, methods such as PSNR and SSIM are aimed at image quality evaluation, and require original images for comparison, which are not suitable for real-time video calls. Real-time video calls transmi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N17/00
CPCH04N17/00
Inventor 钱晓炯
Owner 宁波菊风系统软件有限公司
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