分布式网络视频监控系统的架构

为满足基于TCP/IP的网络视频监控系统的设计要求,结合网络视频监控系统应用范围广、组网灵活等特点,提出了基于TCP/IP的分布式网络视频监控系统的架构。具体方法是将H264、MPEG-4视频编码协议和流媒体技术应用到系统设计中,并将网络视频监控整体系统设计分解模块化。该架构解决了实时性、并发流量、网络带宽瓶颈等问题,为将来与其他系统的组合应用提供了灵活的开放性接口方案。     

基于J2EE框架和Web应用的分布式网络管理系统的研究与实现

针对城市联网视频监控平台对网络管理的特定需求和现有产品的不足,考虑到近来面向对象技术和分布式计算技术的发展,特别是Web技术的快速发展和J2EE框架的不断完善,为分布式网络管理系统的实现提供了有效的途径。本文首先提出了基于SNMP协议和ICE通信协议的混合网络管理模型,其次以J2EE为平台,综合运用Web技术、Spring业务逻辑控制技术、Hibernate数据持久化技术、Ajax技术等设计了一个分布式的、多层次的、可扩展的网络管理架构实现此模型。最后,给出了城市联网视频监控平台中网络管理系统的关键模块的实现。     

基于网络的智能定时视频监控系统设计

介绍了一种基于网络的智能定时视频监控系统的总体设计方案,在Windows 2003平台下利用软件实现视频数据的智能定时采集;重点阐述了系统的设计目标、视频监控系统基本组成和功能;提出了一种基于网络的智能定时视频监控系统平台的设计方案,此方案由摄像、传输、控制、图像处理和显示等几部分组成,同时采用Visual C++6.0技术设计该方案的平台架构,指出了实现视频监控的关键技术和方法,实现了基于网络的智能定时视频监控;实践表明,该方案真正实现网络的智能定时视频监控,具有良好的可重用性和扩展性。     

一种采用多Agent的视频监控系统的设计与研究

在视频监控系统中,当监控点和用户增加时视频数据在网络上的流量会大大增加,网络冲突严重,无法保证 用户的QoS。该文针对此问题提出了一种采用多Agent的视频监控系统模型,讨论了采用多Agent的视频监控模 型的原理和内部结构,并使用C++中的Socket套接字对多Agent的通信机制进行了实现。     

基于物联网的社会视频整合接入专网平台方案设计

城市社会视频监控存在种类繁多、组网复杂、标准不一等问题,造成视频资源孤岛现象严重.为解决视频资源碎片化问题,本文对社会视频资源整合接入公安视频专网进行了规划设计,构建了网络架构合理、数据共享、平台统一和信息应用安全的开放式社会公共视频资源管理系统,盘活了社会视频资源.本文首先对接入系统的系统架构进行了介绍,然后对社会视...     

基于B/S架构的嵌入式网络视频监控系统

根据目前视频监控需求,采用ARM11处理器与Linux操作系统相结合的方式,提出了一种基于B/S架构的远程网络视频监控方案。使用V4L2进行视频图像采集,选择H.264压缩标准,通过硬件多格式编码器MFC完成视频硬件压缩。运用RTP流媒体传输技术实现视频数据的打包传输,客户端通过安装Active X控件完成视频图像的显示,最终实现网络视频监控功能。     

多媒体技术环境下嵌入式网络视频监控系统研究

随着视频技术、网络技术与数字技术的飞速发展,多媒体混合应用向数字化与网络化转变。嵌入式网络与多媒体技术二者相结合的优势愈加明显。现代日常生活工作中,视频监控系统已成为保障生活、工作、学习安全、维护正常秩序的重要组成部分。传统的视频监控系统采用原始的视频编码与网络传输技术,存在视频数据噪点高、数据源封装包资源大、网络交互资源消耗大、延迟高等问题,不利于多群组大面积监控系统架构。根据问题产生的原因,提出多媒体技术环境下嵌入式网络视频监控系统的研究。通过采用视频编码单元、网络编码单元与储存压缩算法,对传统视频监控系统进行整体修复改进。仿真实验表明,提出的多媒体技术环境下嵌入式网络视频监控系统研究方法,具有视频清晰度高、视频源封装资源小、网络传输速度快、延迟小的优点。     

基于VC的变电站视频监控系统控制软件设计

针对现今无人值守与远程监控的要求，本文研究了基于网络的远程视频监控系统。本系统申前端多个监控点，远程视频服务器，客户端监控中心和通信网络构成。在视频压缩上采用适应能力强的H.263协议，减少网络数据流量，以便多路数据的同时传递，通信采用光纤网络，可根据需要采用TCP／IP或者UDP协议进行网络传输，实际中投入变电站无人值守管理使用，也可以用于其他无人值守现场。     

基于生产数据监控与动态管理系统的矿业集团信息化研究

分析和研究了矿业集团信息化的现状,介绍了矿山生产数据监控与动态管理系统的网络架构和关键技术,并对矿业集团实施生产数据监控与动态管理系统提出了几点建议。     

智能网络视频监控综合业务平台架构与IT定位

数字视频监控已经成为视频监控行业发展的主流,也是智能化网络视频监控发展的主要基础之一。本文采用业务分层法,对数字网络视频监控系统不同层次的产品形态、核心值和实现机制以及关联关系进行分析,阐述智能网络视频监控综合业务平台的系统架构及其在行业信息化中的定位。     

Only connect: teaching, technology and telesis

Abstract This paper describes an approach to the design of interactive multimedia materials being developed in a European Community project. The developmental process is seen as a dialogue between technologists and teachers. This dialogue is often problematic because of the differences in training, experience and culture between them. Conditions needed for fruitful dialogue are described and the generic model for learning design used in the project is explained.     

European Community policy and the market

Abstract This paper starts with some reflections on the policy considerations and priorities which are shaping European Commission (EC) research programmes. Then it attempts to position the current projects which seek to capitalise on information and communications technologies for learning in relation to these priorities and the apparent realities of the marketplace. It concludes that while there are grounds to be optimistic about the contribution EC programmes can make to the efficiency and standard of education and training, they are still too technology driven.     

一种自适应子融合集成多分类器方法

融合集成方法已经广泛应用在模式识别领域,然而一些基分类器实时性能稳定性较差,导致多分类器融合性能差,针对上述问题本文提出了一种新的基于多分类器的子融合集成分类器系统。该方法考虑在度量层融合层次之上通过对各类基多分类器进行动态选择,票数最多的类别作为融合系统中对特征向量识别的类别,构成一种新的自适应子融合集成分类器方法。实验表明,该方法比传统的分类器以及分类融合方法识别准确率明显更高,具有更好的鲁棒性。     

Avoiding semantic and temporal gaps in developing software intensive systems

Development of software intensive systems (systems) in practice involves a series of self-contained phases for the lifecycle of a system. Semantic and temporal gaps, which occur among phases and among developer disciplines within and across phases, hinder the ongoing development of a system because of the interdependencies among phases and among disciplines. Such gaps are magnified among systems that are developed at different times by different development teams, which may limit reuse of artifacts of systems development and interoperability among the systems. This article discusses such gaps and a systems development process for avoiding them.     

Designing economic np control charts: A programmed simulation approach

This paper presents control charts models and the necessary simulation software for the location of economic values of the control parameters. The simulation program is written in FORTRAN, requires only 10K of main storage, and can run on most mini and micro computers. Two models are presented - one describes the process when it is operating at full capacity and the other when the process is operating under capacity. The models allow the product quality to deteriorate to a further level before an existing out-of-control state is detected, and they can also be used in situations where no prior knowledge exists of the out-of-control causes and the resulting proportion defectives.     

The development of robot art

Going through a few examples of robot artists who are recognized worldwide, we try to analyze the deepest meaning of what is called “robot art” and the related art field definition. We also try to highlight its well-marked borders, such as kinetic sculptures, kinetic art, cyber art, and cyberpunk. A brief excursion into the importance of the context, the message, and its semiotics is also provided, case by case, together with a few hints on the history of this discipline in the light of an artistic perspective. Therefore, the aim of this article is to try to summarize the main characteristics that might classify robot art as a unique and innovative discipline, and to track down some of the principles by which a robotic artifact can or cannot be considered an art piece in terms of social, cultural, and strictly artistic interest. This work was presented in part at the 13th International Symposium on Artificial Life and Robotics, Oita, Japan, January 31–February 2, 2008     

Explanation and prediction: an architecture for default and abductive reasoning

Although there are many arguments that logic is an appropriate tool for artificial intelligence, there has been a perceived problem with the monotonicity of classical logic. This paper elaborates on the idea that reasoning should be viewed as theory formation where logic tells us the consequences of our assumptions. The two activities of predicting what is expected to be true and explaining observations are considered in a simple theory formation framework. Properties of each activity are discussed, along with a number of proposals as to what should be predicted or accepted as reasonable explanations. An architecture is proposed to combine explanation and prediction into one coherent framework. Algorithms used to implement the system as well as examples from a running implementation are given.     

Three Process Perspectives: Organizations, Teams, and People

This paper provides the author's personal views and perspectives on software process improvement. Starting with his first work on technology assessment in IBM over 20 years ago, Watts Humphrey describes the process improvement work he has been directly involved in. This includes the development of the early process assessment methods, the original design of the CMM, and the introduction of the Personal Software Process (PSP)^SM and Team Software Process (TSP){^SM}. In addition to describing the original motivation for this work, the author also reviews many of the problems he and his associates encountered and why they solved them the way they did. He also comments on the outstanding issues and likely directions for future work. Finally, this work has built on the experiences and contributions of many people. Mr. Humphrey only describes work that he was personally involved in and he names many of the key contributors. However, so many people have been involved in this work that a full list of the important participants would be impractical.     

基于复小波噪声方差显著修正的SAR图像去噪

提出了一种基于复小波域统计建模与噪声方差估计显著性修正相结合的合成孔径雷达(Synthetic Aperture Radar,SAR)图像斑点噪声滤波方法。该方法首先通过对数变换将乘性噪声模型转化为加性噪声模型,然后对变换后的图像进行双树复小波变换(Dualtree Complex Wavelet Transform,DCWT),并对复数小波系数的统计分布进行建模。在此先验分布的基础上,通过运用贝叶斯估计方法从含噪系数中恢复原始系数,达到滤除噪声的目的。实验结果表明该方法在去除噪声的同时保留了图像的细节信息,取得了很好的降噪效果。     

How do children do mathematics with LOGO?

Abstract  This paper considers some results of a study designed to investigate the kinds of mathematical activity undertaken by children (aged between 8 and 11) as they learned to program in LOGO. A model of learning modes is proposed, which attempts to describe the ways in which children used and acquired understanding of the programming/mathematical concepts involved. The remainder of the paper is concerned with discussing the validity and limitations of the model, and its implications for further research and curriculum development.