本文選題：視頻質(zhì)量衡量 + 視頻監(jiān)測體系��； 參考：《北京交通大學(xué)》2017年碩士論文

【摘要】：隨著用戶可享受到的網(wǎng)絡(luò)帶寬越來越大,我們的生活中涌現(xiàn)出了許多以超高清視頻為主的大帶寬業(yè)務(wù)。在視頻業(yè)務(wù)發(fā)展的同時(shí),我們也需要有一個(gè)良好的衡量業(yè)務(wù)質(zhì)量以及監(jiān)測業(yè)務(wù)的體系,來助力其發(fā)展。其中,視頻質(zhì)量衡量體系,主要是采用主客觀相結(jié)合的方法來制定。而視頻監(jiān)測體系是依據(jù)質(zhì)量衡量體系中的客觀參量的選取而制定。本論文圍繞著視頻質(zhì)量與監(jiān)測的主題,進(jìn)行的主要工作和具體研究成果如下:(1)論文將近兩年剛提出的U-vMOS標(biāo)準(zhǔn)體系,用于衡量視頻業(yè)務(wù)的質(zhì)量。并以超高清4K視頻以及其他常見的視頻為主,計(jì)算了它們的U-vMOS得分。且所得結(jié)果能正確體現(xiàn)出超高清視頻的優(yōu)勢。(2)論文以U-vMOS得分為參考依據(jù),通過計(jì)算指出要想更好地發(fā)展高質(zhì)量的超高清視頻業(yè)務(wù)就需百兆以上的帶寬。并通過結(jié)合作者在工程實(shí)踐中參與的1G-EPON/G-PON的現(xiàn)網(wǎng)ODN鏈路測試,指出目前現(xiàn)網(wǎng)不能滿足較多用戶同時(shí)獲取百兆以上帶寬的需求。(3)論文針對當(dāng)下的監(jiān)測體系,深入分析了有關(guān)探針監(jiān)測的內(nèi)容。其中,切換臺(tái)和加載所對應(yīng)的時(shí)長是探針監(jiān)測時(shí)必須上報(bào)的內(nèi)容,作為衡量視頻業(yè)務(wù)質(zhì)量的參量。由于利益的驅(qū)使,一些作弊者經(jīng)常利用探針上報(bào)時(shí)的漏洞,使上報(bào)時(shí)長變小。論文針對這一情況,提出了一套基于監(jiān)測作弊的解決方法。該監(jiān)測作弊的方法中采用了視頻采集卡和MATLAB編程。其中,視頻采集卡可將電視畫面轉(zhuǎn)到電腦上,MATLAB編程采用了基于RGB和亮度的相關(guān)性算法來判斷是否存在作弊行為。該方法在一定程度上代替了之前為防止作弊而進(jìn)行的手動(dòng)時(shí)長測試,大大減少了人力上的消耗,也完善了當(dāng)下的監(jiān)測體系。
[Abstract]:With the increasing network bandwidth that users can enjoy, many large bandwidth services are emerging in our life, which mainly focus on ultra high definition video. With the development of video service, we also need a good system to measure service quality and monitor service. Among them, the video quality measurement system is mainly developed by combining subjective and objective methods. The video monitoring system is based on the selection of objective parameters in the quality measurement system. This paper focuses on the theme of video quality and monitoring. The main work and specific research results are as follows: 1) the U-vMOS standard system proposed in this paper is used to measure the quality of video service. The U-vMOS score is calculated by using Ultra High HD 4 K video and other common video. And the results can correctly reflect the advantage of UHD video.) based on the U-vMOS score, the paper points out that to better develop high quality UHD video services, it needs more than 100 megabytes of bandwidth. Combined with the ODN link test of 1G-EPON/G-PON in engineering practice, it is pointed out that the current network can not meet the needs of more users to obtain more than 100 megabytes of bandwidth at the same time.) this paper aims at the current monitoring system. The contents of probe monitoring are analyzed. The length of time corresponding to the switching station and loading is the content that must be reported when the probe is monitored as a parameter to measure the quality of video service. Driven by profit, some cheaters often use the loopholes in the probe to make the reporting time smaller. In order to solve this problem, a set of solutions based on monitoring cheating is put forward in this paper. The method of monitoring cheating adopts video capture card and MATLAB programming. Among them, the video capture card can transfer the TV picture to the computer and adopt the correlation algorithm based on RGB and brightness to judge whether there is cheating or not. To some extent, this method replaces the manual time test in order to prevent cheating, which greatly reduces the human consumption and improves the current monitoring system.
【學(xué)位授予單位】：北京交通大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TP391.41

【參考文獻(xiàn)】

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本文編號(hào)：1912088