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Non-reference network television service quality assessment model

A technology of service quality and evaluation model, applied in the field of computer information, it can solve the problem of inability to accurately reflect the quality of image content, and achieve the effect of real-time monitoring

Inactive Publication Date: 2010-09-15
王琳
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to improve the shortcomings of the existing video evaluation model that cannot accurately reflect the quality of image content without reference, monitor the quality of video service in real time, and truly reflect the real effect of video images

Method used

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  • Non-reference network television service quality assessment model
  • Non-reference network television service quality assessment model

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Embodiment Construction

[0014] As shown in Figure 1, the damage event may involve multiple packet loss. Since the synchronization flag for decoding is not carried between the packets, it is necessary to wait until the next image slice is received to realize the resynchronization of the image frame. It will lead to asynchronous information, that is, if a packet is lost, and before the first macroblock of the next slice is not received, the received macroblock cannot be decoded by the decoder even if it is correct. Therefore, it is necessary to quantitatively calculate the distance between the damage point and the resynchronization point through the airspace diffusion factor, which is used to analyze the airspace influence range caused by a damage event.

[0015] Quantitative analysis of the extent of damage requires calculation of the starting and ending points of the damage event. The starting point of the wth damage event is the coordinate of the last macroblock of the wth correctly received data se...

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Abstract

The invention relates to a non-reference network television service quality assessment model. The main technical background of the invention is that: international standard MPEG-2, which is instituted and developed by a moving pictures experts group (MPEG) and used for compressing and coding video and audio, can analyze the influence of injury information of the picture on other information and quantificationally calculates the diffusion range of an injury incident in a space domain and a time domain; a space domain diffusion factor can quantificationally weigh the incidence caused by the injury incident inside a picture frame; and a time domain diffusion factor can quantificationally weigh whether a macroblock is influenced by a reference macroblock thereof or not. The non-reference network television service quality assessment model has the advantages of improving the accuracy and real-time of the video quality assessment.

Description

【Technical field】 [0001] The invention relates to the field of computer information technology, in particular to a no-reference network TV service quality evaluation model, which can monitor video service quality in real time. 【Background technique】 [0002] In recent years, with the continuous development of high technology and the continuous popularization of the Internet, IPTV has quietly entered people's lives as a new service integrating computer, communication, network and other technologies. IPTV uses the broadband cable TV network as the infrastructure, PC or home TV as the receiving terminal, and uses the Internet IP protocol as the main communication technology. In my country, the IPTV business has developed from the exploration stage to the practice stage, and the market has gradually formed. China Telecom and China Netcom have launched IPTV commercial operation trials based on broadband and ADSL access networks in many provinces and cities across the country. Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N17/00H04N7/50H04N19/154
Inventor 王琳
Owner 王琳
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