HYDRA- High Performance Data Recording Architecture for Streaming Media

IIS-0534761 Roger Zimmermann rzimmerm@imsc.usc.eduUniversity of Southern California流媒体的高性能数据记录体系结构目前，大量的数字流媒体，如音频和视频，已经成为许多应用中普遍存在的组成部分。 这个研究项目的目标是研究，设计和实现一个数据流记录器，解决了在广泛的创新应用程序，获取，存储，操作和传播数字连续媒体（CM）流实时和大规模的固有挑战。 为此，研究的重点是一个统一的范式，集成多流记录，检索和控制，以协同的方式为所有媒体提供定义良好的服务，认识到他们的特点，如带宽要求，分辨率和模态。 研究的主题包括新的共享缓冲区管理技术，统计接纳控制算法的基础上，一个全面的随机变量模型，以支持阅读和写的多个可变比特率的媒体流和多阈值流控制协议，使流畅的流采集和回放。 此外，全面的查询支持调查，通过一个声明性语言，促进规范的时间和语义关系的媒体stream.The由此产生的能力有巨大的吸引力，并预计将有一个重大的实际影响，广泛的应用，利用多媒体传感器，从工业监控（如智能交通管理）到国土安全和娱乐应用。 该项目的一个组成部分是评估信息理解和沉浸式环境领域的流记录器设计。 这个项目的原型执行和实验研究将作为多媒体和服务器技术课程的教学工具，并将通过项目网址http://dmrl.usc.edu/hydra.html传播。

IIS-0534761Roger Zimmermann rzimmerm@imsc.usc.eduUniversity of Southern CaliforniaHYDRA - High Performance Data Recording Architecture for Streaming MediaPresently, an abundance of digital streaming media such as audio and video have become a pervasive and integral part of many applications. The goals of this research project are to study, design and implement a data stream recorder that addresses the challenges inherent in a broad class of innovative applications that acquire, store, manipulate and disseminate digital continuous media (CM) streams in real-time and on a large scale. To this end the research focuses on a unified paradigm that integrates multi-stream recording, retrieval and control in a synergistic manner to provide well-defined services for all media, cognizant of their characteristics such as bandwidth requirements, resolution and modality. The topics of study include novel shared buffer management techniques, statistical admission control algorithms based on a comprehensive random variable model to support both reading and writing of multiple variable bitrate media streams and multi-threshold flow control protocols enabling smooth stream acquisition and playback. Additionally, comprehensive query support is investigated through a declarative language that facilitates the specification of both temporal and semantic relationships in media streams.The resulting capabilities have tremendous appeal and are expected to have a significant practical impact on a broad range of applications that make use of multimedia sensors, from industrial monitoring - such as intelligent traffic management - to homeland security and entertainment applications. An integral part of the project is the evaluation of the stream recorder design in the domains of information comprehension and immersive environments. The prototype implementation and experimental research of this project will be used as a teaching tool for courses covering multimedia and server technology and will be disseminated via the project Web site at http://dmrl.usc.edu/hydra.html.