数字多媒体信息发布系统及其监控管理

发布时间：2018-01-13 10:41

本文关键词：数字多媒体信息发布系统及其监控管理　出处：《东华大学》2011年硕士论文　论文类型：学位论文

【摘要】：数字多媒体信息发布系统已经在各种国际性的活动和赛事、政府和社会机构、公共设施等诸多场合及环境中得到广泛地应用,它已逐步成为国民生活中不可缺少的基础信息系统之一。数字多媒体信息发布系统涵盖内容不仅包括文本、数值等基本信息类型,还可以大量地使用图像、动态视频、声音等各种媒体信息,具有更好的表现效果、更强的交互性、更大的信息使用范围。多媒体信息发布模式融合了多媒体视频信息的多样性和生动性,实现了信息发布的远程集中管理和内容随时更新,使受众在第一时间接收到最新鲜的各类资讯,它将成为信息化建设的重要载体。本文根据实际的数字多媒体信息发布系统,在综合研究系统架构与分析系统需求的基础上,着重于系统监控与管理。对以视频信息为主的商业广告投放业务中,提出了一种视频信息监测的方案,从而提供有效的收费依据；对大型信息发布系统的运行参数监控上,设计并实现了用于核心参数实时监控软件；在音视频码流的传输上,提出了一种稳定的码率控制并且冗余的传输方案。本文具体研究内容包括： 1.数字多媒体信息发布系统监控需求与整体架构分析本文全面介绍了数字多媒体信息发布系统,在对系统需求进行分析的基础上,提出完整的系统架构,并论述了各个组成部分的功能,软硬件体系,并详细分析了业务系统平台。根据系统的特点,提出信息发布系统中的监控需求。 2.提出基于数字视频水印的视频信息发布监测方案设计了一种以DEW算法为基础的水印嵌入和提取方案,用于解决数字视频广告应用领域中的发布监测问题,解决了传统的由人工进行回放的弊端。依据该方案中的设计目标,分析H.264压缩编码标准与数字水印经典算法,选择通过调制DCT系数形成能量差嵌入水印,以达到盲检测的目的,同时保证了鲁棒性；基于开源的JM10.1实现算法。 3.提出了一种基于IP网络的MPEG-2 TS稳定传输方案数字多媒体信息发布系统中,通常使用MPEG-2传输流(TS流)作为传输载体。为了封装的音视频流能够稳定地进行传输,提出了一种基于IP网络的传输方案。本文首先对TS流数据包进行描述,然后分析了编解码的同步问题；所提出的方案中,同时考虑了主备冗余码流,以增强系统的稳定性。 4.设计与实现了对信息发布系统核心参数的监控软件根据对系统核心参数的监控需求,设计了一套基于扩展C/S架构的软件,实现了对直播和录播编码服务器与流媒体服务器状态的实时监控、各种参数的配置、备份等功能；该系统以UDP通信为基础,拥有良好的扩展性,支持不同操作系统平台。
[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.
【学位授予单位】：东华大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TP311.52

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