Remote Video Monitoring Over the WWW

Remote video monitoring has become increasingly important for monitoring the security of destined locations. Traditional security monitoring systems using coaxial cables and VCR recording systems are expensive and ineffective. With the rapid growth of the Internet, it is now possible to use it as an intermediate transmission medium to support real-time video transmission. This paper proposes a web-based remote monitoring system known as iSecure. Apart from the essential live or stored video transmission, intelligent monitoring and web-based monitoring are also supported. As the transmission of live video data through the packet switched network environment of the Internet can result in packet loss and quality degradation, the iSecure system has implemented an adaptive transmission and recovery mechanism to enhance the quality of real-time video transmission. Intelligent monitoring for elevator security and face-based door access control applications has been incorporated. The iSecure system can be used as a framework for developing other intelligent remote monitoring applications.     

H.264实时视频数据的还原与视频帧提取研究

对因特网中某些不良的实时视频通信数据进行监听和还原,是保证网络应用健康发展和打击网络犯罪的一个重要方面.本文介绍了监听和还原因特网中H.264实时视频数据的一种处理方法和处理过程,实现了对被监听的视频通信数据的截获、还原和存储,并可进一步将存储的视频帧提取、转换为图像文件供特定需求使用.实践证明,该方法的处理效率和效果达到了预期目标,对识别因特网中的不良流媒体信息具有较大的实用价值.     

基于Spark的实时视频分析系统

视频监控技术在交通管理、公共安全、智慧城市等方面有着广泛的应用前景,且向着智能识别、实时处理、大数据分析的方向发展. 本文针对大规模实时视频监控提出了新的解决方案. 基于Spark streaming流式计算、分布式存储及OLAP框架,使多路视频处理在可扩展性、容错性及数据多维聚合分析上具有明显的优势. 系统根据视频处理算法划分为单机处理与分布式处理. 并将视频图像处理与数据分析耦合,利用Kafka消息队列与Spark streaming完成对多路视频输出数据的进一步操作. 结合分布式存储方案,并利用OLAP框架实现对海量数据实时多维聚合分析与高效实时查询.     

基于CATV网络视频服务器的数据实时性保证策略

随着计算机性能的提高和网络带宽的增加，以及视频压缩编码技术的进步，逐渐使提供数字视频服务成为可能．在基于有线电视系统的视频服务器中，数据实时性完全由视频服务器决定．通用PC服务器输出数据实时性较低，难以满足视频服务器要求．本文对通用PC服务器进行软硬件扩展，设计一个数据传输控制机制，提高输出数据实时性，实现一个由通用PC服务器构建的视频服务器．     

视频大数据研究综述

科学技术与生产力的发展带来了数据量的高速增长,其中视频图像等多媒体数据占了很大的比重。如何高效处理这些海量数据并从中快速挖掘有价值的信息是当前的研究热点。通常大数据具有四个特点,即数据量大、需要快速响应、数据类型多样和价值密度低。视频大数据同样具有以上特点,但其特殊性在于数据冗余更大,需要进行高效的压缩编码与分析处理。总的来说,视频大数据的研究内容包括了视频数据表示、智能视频分析、视频压缩与传输、视频显示与评价等方面。在发展趋势上,视频数据的表示将向真实感与智能化两个方向发展;智能视频分析技术将会借助深度神经网络获得更准确的识别分类结果;视频压缩技术在提升压缩效率的同时也会探索降低编码复杂度的方法,并通过结合人眼视觉感知特性的编码算法来减少视频大数据的视觉冗余;视频显示设备将伴随着视频数据表示形式的改变而进行相应的升级换代;视频质量的评价准则将由单一的图像质量评价向更加综合全面的用户体验质量评价发展。     

The FUSE Platform: Supporting Ubiquitous Collaboration Within Diverse Mobile Environments

The recent proliferation of heterogeneous computing devices and wireless network technology presents new opportunities for Computer Supported Cooperative Work (CSCW). One emergent paradigm is that of ubiquitous collaboration, which provides widespread access to shared services through a variety of interactive devices, irrespective of whether individuals are mobile or deskbound. However, developing groupware that is interoperable across diverse, often mobile, environments can be difficult and costly. The fundamental issue is that current support infrastructures, which will meet the requirements for multi-user application development, are not operable within emerging ubiquitous settings. This paper explores this problem and presents a generic platform that promotes new forms of collaboration through mobility and ever-present computing services. The developed platform seeks to provide a wide range of collaborative services to a very diverse set of devices by adapting and extending existing middleware technologies.     

基于BACnet的实时视频传输

本文分析了BACnet协议和视频传输的主要特点,对基于BACnet协议的视频数据传输进行了初步的研究,讨论了用到的关键技术,提出了一种基于BACnet的视频传输解决方法,并给出了相应的软件模型。     

Towards Collaboration Maturity in Business Processes: An Exploratory Study in Oil Production Processes

Abstract

Organizations have been relying on collaboration for knowledge sharing and productivity improvement in order to reduce costs or boost revenue. However, organizations still cannot assure that collaboration is properly conducted in daily work. This paper presents an approach to stimulating collaboration between professionals in an organization. The approach, combining a BPM methodology with the CollabMM collaboration maturity model and its corresponding method, is a result of an exploratory study in a real setting in an oil company in Brazil. The project is a move towards improving decision-making during one of the company's business processes and establishing collaboration among professionals through information sharing.     

大学生创新计划师生协作资源池建设

本文围绕着目前大学生创新计划项目,为参与项目的指导教师和学生提出协作平台和资源共享环境的协作资源池系统。并提出大学生创新计划师生协作机制,阐述了大学生创新计划师生协作资源池的体系架构及其工作模式。     

Media Production: Towards Creative Collaboration Using Communication Networks

To examine the diffusion of remote collaboration technologies within the media production industries, a series of case studies was recently conducted with early adopters of advanced electronic networks in Sydney, Los Angeles and London. The studies assessed: 1) user reactions to these collaboration technologies and types of activities being supported and 2) factors influencing their adoption decisions. Interviews conducted also provided early indications of the conditions likely to facilitate remote collaboration and the likely impacts on work practices in media production organizations. It was established that electronic delivery, remote access to resources and materials, and remote creative collaboration were all being carried out, even internationally. Although most network applications were routine substitutions for non-electronic equivalents (e.g. couriers or catalogue browsing), some did involve shared creative activities, thus confirming that remote creative collaboration is a viable option. Key factors influencing network adoption were cost considerations and regulatory issues, time savings and productivity, and security concerns. Certain industry segments -- animation, post-production, and advertising -- were more likely to be early adopters, as were companies who found innovative ways to achieve greater benefits. Conditions likely to facilitate remote collaboration include more sophisticated change-agent strategies, increasing the perceived control of creative outputs, developing and maintaining trust, providing more auxiliary support for coordination needs, and making more effective use of timing and time-zone differences. Likely impacts of remote collaboration in media production are: more overlap between pre-production, production, and post-production activities; faster work pace; enhanced creativity; and improved quality of work life.     

自然保护区海量视频数据快速分析与检索

近年来,随着视频监控系统在自然保护区的大量部署,如何有效利用日益增加的海量视频监控数据成为亟待解决的难题.通过基于图像相似度的关键帧提取算法对海量视频数据进行清洗和压缩,同时利用基于深度学习的目标检测算法提取关键帧中的有效视频信息,并提供多种基于内容的视频检索方式,自动对用户提交的检索内容进行分析与处理,从而快速检索出感兴趣的视频.通过对青海湖野生动物视频监控数据进行分析与检索,验证了该系统的有效性.     

基于TCP/IP的远程触觉交互系统力反馈数据传输方法

时延、丢包是影响远程触觉交互性能和用户体验的重要因素。以实时传输和真实再现力反馈数据为目的,提出了一种基于TCP/IP的实时力反馈数据传输方法,该方法通过时延处理和插值预处理降低网络通信过程中对远程触觉感知造成的不利影响实验结果证明,该方法有效地解决了远程触觉交互系统中实时力反馈的信息再现与信息交互问题,在远程医疗、远程教学、虚拟现实等领域具有重要的应用价值。     

Collaboration Challenges: Bridging the IT Support Gap

The more collaborative enterprises are, the better they perform. However, current collaboration technologies do not contribute as much as expected to collaboration quality. Collaboration technology seems to be stuck in just overcoming the limitation of people not being in the same place at the same time. Real time communications are supported through such things as web-conferencing and instant messaging, while email, wikis, and web-based repositories provide the electronic equivalent of the shared file cabinet. Although some technologies support workflow and project management to a degree, there is little support for the joint development lifecycle of planning, creating, evaluating, negotiating, and consolidating group work. Focusing broadly on collaboration challenges highlights limitations of current technology and can help provide direction for the kinds of information technology that will be needed to bridge the IT support gap to meet current and future collaboration challenges.     

基于无线网络的机器人远程协作系统的研究

目前的机器人远程协作系统,普遍采用的无线以太网通信方式存在着网络覆盖范围较小的不足。为了弥补这一点,本文提出了一种利用基于B3G(Beyond3G)TDD试验平台搭建的无线网络环境来构架网络控制机器人系统的有效方法。文中详细介绍了系统的体系结构和通信机制,并通过仿真实验验证了该方法的可行性和实用性。     

科普书屋语音视频通信系统设计与实现

结合科普书屋采用Flash Media Server构建了一套基于互连网的语音视频通信系统,并给出该系统的具体实现方法.系统几乎可以与目前互联网上流行的语音视频通信系统相媲美,为视频监控、视频会议、聊天室等应用系统的开发提供了参考.     

VisualGREP: A Systematic Method to Compare and Retrieve Video Sequences

Multimedia Tools and Applications - In this paper, we consider the problem of similarity between video sequences. Three basic questions are raised and (partially) answered. Firstly, at what...     

数据科学在国内管理学研究中的应用综述

基于大数据时代的新学科——数据科学的研究方法正在被包括管理学在内的其他学科应用。首先,探讨了以大数据为理论基础的数据科学研究范式与管理学研究的经典范式之间的联系和区别。其次,分析了国家自然科学基金委认定的A类重要管理学期刊文献及引证文献,对当前国内管理学领域为数不多的基于数据驱动的公共管理、基于复杂网络仿真的网络行为管理和基于多源数据融合的创新管理等热点领域进行了分类梳理。然后, 归纳总结了当前国内管理学领域采用数据科学研究方法的特征。最后,提出了数据科学在管理学科学研究应用中的趋势,即范式融合、大数据利用、场景融合、专家合作。     

基于Hadoop的公安视频大数据的处理方法

公安视频监控技术已经从联网整合阶段发展到视频实战深度应用阶段,面对源源不断的公安视频大数据,需要研究新型的大数据处理方法。根据公安视频大数据应用需求,采用基于Hadoop技术的视频大数据处理平台,并采用以Map-Reduce算法为基础的人脸检索与识别算法,来实现公安视频大数据的智能信息处理,达到公安大数据实战应用的目的。     

雷达视频回波信号的实时采集、显示与存储系统

介绍一种雷达视频回波信号的实时采集、显示与存储系统。该系统采用带有RAID适配卡的工控机作为采集主控设备,以普通微机显示器作为显示设备,利用多个IDE硬盘组成磁盘阵列作为存储设备。制作了一块基于FPGA的高速雷达信号采集PCI卡,以FPGA为采集的核心控制芯片,并在FPGA内部实现了32bit／33MHz的PCI接口逻辑。利用FPGA内部双口RAM的乒乓切换与缓冲区环行存储技术保证了连续采集。采用数据抽取、坐标查表映射和DirectDraw等技术在普通显示器上以P显方式进行实时全屏显示,同时可对局部区域以B显进行开窗放大显示。显示过程中可对任意区域设置采集方位和距离波门,将采集的数据实时存储在磁盘阵列上。该系统已成功用于舰栽警戒搜索雷达的外场数据采集。     

一种智能视频监控体系结构设计方案

智能视频监控就是将自动视频分析技术应用到视频监控系统中。本文探讨了智能视频监控的功能作用,设计了一种智能视频监控系统的体系结构方案,并重点阐述了其智能监控服务器模块的内部功能和结构,指出了实现智能监控所需的关键技术。