發(fā)布時間：2018-01-13 10:41

  本文關(guān)鍵詞：數(shù)字多媒體信息發(fā)布系統(tǒng)及其監(jiān)控管理　出處：《東華大學(xué)》2011年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 數(shù)字多媒體 信息發(fā)布系統(tǒng) 系統(tǒng)監(jiān)控 H.264視頻壓縮編碼標(biāo)準(zhǔn) 數(shù)字視頻水印 傳輸流 碼流控制

【摘要】：數(shù)字多媒體信息發(fā)布系統(tǒng)已經(jīng)在各種國際性的活動和賽事、政府和社會機(jī)構(gòu)、公共設(shè)施等諸多場合及環(huán)境中得到廣泛地應(yīng)用,它已逐步成為國民生活中不可缺少的基礎(chǔ)信息系統(tǒng)之一。數(shù)字多媒體信息發(fā)布系統(tǒng)涵蓋內(nèi)容不僅包括文本、數(shù)值等基本信息類型,還可以大量地使用圖像、動態(tài)視頻、聲音等各種媒體信息,具有更好的表現(xiàn)效果、更強(qiáng)的交互性、更大的信息使用范圍。多媒體信息發(fā)布模式融合了多媒體視頻信息的多樣性和生動性,實現(xiàn)了信息發(fā)布的遠(yuǎn)程集中管理和內(nèi)容隨時更新,使受眾在第一時間接收到最新鮮的各類資訊,它將成為信息化建設(shè)的重要載體。 本文根據(jù)實際的數(shù)字多媒體信息發(fā)布系統(tǒng),在綜合研究系統(tǒng)架構(gòu)與分析系統(tǒng)需求的基礎(chǔ)上,著重于系統(tǒng)監(jiān)控與管理。對以視頻信息為主的商業(yè)廣告投放業(yè)務(wù)中,提出了一種視頻信息監(jiān)測的方案,從而提供有效的收費依據(jù)；對大型信息發(fā)布系統(tǒng)的運行參數(shù)監(jiān)控上,設(shè)計并實現(xiàn)了用于核心參數(shù)實時監(jiān)控軟件；在音視頻碼流的傳輸上,提出了一種穩(wěn)定的碼率控制并且冗余的傳輸方案。本文具體研究內(nèi)容包括： 1.數(shù)字多媒體信息發(fā)布系統(tǒng)監(jiān)控需求與整體架構(gòu)分析 本文全面介紹了數(shù)字多媒體信息發(fā)布系統(tǒng),在對系統(tǒng)需求進(jìn)行分析的基礎(chǔ)上,提出完整的系統(tǒng)架構(gòu),并論述了各個組成部分的功能,軟硬件體系,并詳細(xì)分析了業(yè)務(wù)系統(tǒng)平臺。根據(jù)系統(tǒng)的特點,提出信息發(fā)布系統(tǒng)中的監(jiān)控需求。 2.提出基于數(shù)字視頻水印的視頻信息發(fā)布監(jiān)測方案 設(shè)計了一種以DEW算法為基礎(chǔ)的水印嵌入和提取方案,用于解決數(shù)字視頻廣告應(yīng)用領(lǐng)域中的發(fā)布監(jiān)測問題,解決了傳統(tǒng)的由人工進(jìn)行回放的弊端。依據(jù)該方案中的設(shè)計目標(biāo),分析H.264壓縮編碼標(biāo)準(zhǔn)與數(shù)字水印經(jīng)典算法,選擇通過調(diào)制DCT系數(shù)形成能量差嵌入水印,以達(dá)到盲檢測的目的,同時保證了魯棒性；基于開源的JM10.1實現(xiàn)算法。 3.提出了一種基于IP網(wǎng)絡(luò)的MPEG-2 TS穩(wěn)定傳輸方案 數(shù)字多媒體信息發(fā)布系統(tǒng)中,通常使用MPEG-2傳輸流(TS流)作為傳輸載體。為了封裝的音視頻流能夠穩(wěn)定地進(jìn)行傳輸,提出了一種基于IP網(wǎng)絡(luò)的傳輸方案。本文首先對TS流數(shù)據(jù)包進(jìn)行描述,然后分析了編解碼的同步問題；所提出的方案中,同時考慮了主備冗余碼流,以增強(qiáng)系統(tǒng)的穩(wěn)定性。 4.設(shè)計與實現(xiàn)了對信息發(fā)布系統(tǒng)核心參數(shù)的監(jiān)控軟件 根據(jù)對系統(tǒng)核心參數(shù)的監(jiān)控需求,設(shè)計了一套基于擴(kuò)展C/S架構(gòu)的軟件,實現(xiàn)了對直播和錄播編碼服務(wù)器與流媒體服務(wù)器狀態(tài)的實時監(jiān)控、各種參數(shù)的配置、備份等功能；該系統(tǒng)以UDP通信為基礎(chǔ),擁有良好的擴(kuò)展性,支持不同操作系統(tǒng)平臺。
[Abstract]:Digital multimedia information publishing system has been widely used in various international events, government and social organizations, public facilities and many other occasions and environment. It has gradually become one of the indispensable basic information systems in national life. The digital multimedia information publishing system covers not only the basic information types such as text, numerical value, but also a large number of images. Dynamic video, sound and other media information, with better performance, stronger interactivity, a larger range of information. Multimedia information release model combines the diversity and vitality of multimedia video information. The remote centralized management of information release and the update of content at any time make the audience receive the freshest kinds of information in the first time. It will become an important carrier of information construction. In this paper, according to the actual digital multimedia information publishing system, on the basis of the comprehensive study of the system architecture and analysis of the system requirements. Focusing on system monitoring and management, this paper puts forward a scheme of video information monitoring in the commercial advertising service, which is based on video information, which provides an effective basis for charging. The real-time monitoring software for the core parameters is designed and implemented in the monitoring of the running parameters of the large-scale information publishing system. In the transmission of audio and video code stream, a stable rate control and redundant transmission scheme is proposed. 1. Analysis of the monitoring requirements and overall architecture of the digital multimedia information publishing system This paper introduces the digital multimedia information publishing system in an all-round way. Based on the analysis of the system requirements, the paper puts forward the complete system architecture, and discusses the function, software and hardware system of each component. The business system platform is analyzed in detail. According to the characteristics of the system, the monitoring requirements in the information publishing system are put forward. 2. A video information publishing and monitoring scheme based on digital video watermarking is proposed. A watermarking embedding and extracting scheme based on DEW algorithm is designed to solve the issue of publishing monitoring in the field of digital video advertising. The drawback of the traditional manual playback is solved. According to the design goal of the scheme, the H.264 compression coding standard and the classical digital watermarking algorithm are analyzed. In order to achieve the purpose of blind detection, the watermark is embedded in the energy difference by modulating the DCT coefficients, and the robustness is guaranteed at the same time. JM10.1 algorithm based on open source. 3. A stable transmission scheme of MPEG-2 TS based on IP network is proposed. In the digital multimedia information publishing system, MPEG-2 transport stream / TS stream is usually used as the transmission carrier. In order to encapsulate the audio and video stream, the audio and video stream can be transmitted stably. In this paper, a transmission scheme based on IP network is proposed. Firstly, the TS stream data packet is described, then the synchronization problem of encoding and decoding is analyzed. In order to enhance the stability of the system, the main and standby redundant bit streams are taken into account in the proposed scheme. 4. Design and implement the monitoring software for the core parameters of information publishing system. According to the monitoring requirements of the system core parameters, a set of software based on extended C / S architecture is designed to realize the real-time monitoring of the status of live broadcast and video coding server and streaming media server. Configuration of various parameters, backup and other functions; The system is based on UDP communication and has good expansibility and supports different operating system platforms.
【學(xué)位授予單位】：東華大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2011
【分類號】：TP311.52

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