基于流媒体技术的家用数字图像监控系统

本文提出了一种经济实用的基于流媒体技术的家用数字图像监控报警系统的实现方案，该系统以廉价的USB摄像头为图像采集设备，利用作为家庭信息平台中枢的PC机强大的处理能力，采用Windows Media技术对图像进行实时压缩编码和流化，当异常发生时，以流媒体形式对报警图像进行存储和传输，使得用户能远程监控家中的各种警报情况。     

基于嵌入式Linux的数字家庭监控系统研究

本文设计了一套经济实用的数字家庭监控系统。该系统以装有嵌入式Linux的ARM为开发平台,以廉价的USB摄像头为图像采集设备。一旦获得图像,就可以通过GPRS发送,然后在监控中心复原图像,以实现远程的安全监控。整个系统开发成本低,运行可靠,使用方便。     

基于嵌入式的移动图像监控系统设计

随着科技水平的提高和经济的快速发展,人们对于如何保护自身安全和经济财产等方面的问题越来越重视。针对这些情况,设计了一种能够实现远程监控并可以自动预警的设备。设备使用TQ210开发板作为硬件平台和嵌入式Linux作为软件平台,通过外接的摄像头采集图像,利用帧差法对采集到的图像进行处理,从而实现对运动物体的检测,最后通过音箱播放警报声以实现预警。同时在开发板上构建了以Boa为核心的WEB服务器。此设备通过Wi-Fi模块,实现了远程查看移动物体图像和视频的功能。实验结果表明,该系统不仅实现了传统的视频实时监控功能,而且当检测到移动物体产生时,不仅能够立即开启声音预警,并将图像和视频保存下来用于用户事后的查看或者取证。     

基于图像处理的嵌入式自动报警系统

针对传统视频监控系统的不足,开发了自动图像报警系统.系统基于嵌入式平台,利用USB摄像头实时采集图像,通过一种实时有效的图像处理算法检测出有人非法闯入或火灾等异常时,将现场图像通过E-mail发送给用户,并可以短信和电话方式报警,同时用嵌入式数据库保存报警信息.实验结果表明该系统报警实时、准确、性能稳定可靠.     

基于运动检测和GPRS的智能家居监控系统设计

基于已有的蓝牙和Web技术,利用OMAP5910双核处理器设计了一种新型的智能家居监控系统。该系统能实现USB摄像头对图像的采集、蓝牙的无线传输和GPRS的短信报警功能,并能对采集的图像做运动检测,通过网络达到对整个智能家居系统的实时监控的效果。     

基于嵌入式Linux的网络远程视频监控系统

为设计一种网络远程视频监控系统,采用以S3C2440嵌入式处理器为核心,S3C2440的USB接口为摄像头的输入、输出通道,来实现摄像头的视频采集,完成了在Linux上架设BOA服务器进行远程视频采集传输、设备控制和环境检测,实现了通过互联网对远程设备的智能控制和视频监控;该系统通过互联网进行视频播放和远程设备控制,具有可视化界面和自动获取IP的功能,而且通过NAT编程具有了穿透路由的功能;实验中系统工作稳定可靠,满足设计要求。     

基于ARM7的图像数据采集系统的研究与应用

为解决图像监控设备中图像数据的实时采集与存取问题,研究了一种新型图像数据采集系统.该系统选取基于ARM7的处理器AT91SAM7XC512,运行的是μC/OS-II操作系统.当系统巡逻信号被触发时,图像可以通过串口摄像头模块采集,存储到U盘中.该设计性能好、体积小、功耗低,运行稳定可靠.系统软件和硬件已通过调试并在工业图像数据采集系统中得到了实际验证.     

基于分布式网络的监控系统

设计了一个基于分布式网络的监控系统.该系统利用网络摄像头采集视频数据,压缩后传送到远程的PC主机,主机对图像帧进行分析,进行人脸识别和步态识别,检测出异常人体,控制摄像头云台进行监视.整个系统使用实时传输协议和实时控制协议,利用网络实现了分布式的视频采集和集中处理,为远程视频监控提供了高效可行性且价格低廉的解决方案,并且具有较强的实时性和可交互性.     

基于嵌入式Linux远程监控系统设计

该系统采用ARM内核的S3C2410芯片作为处理器,以嵌入式Linux平台作为服务端,通过ZC301摄像头采集图像,将嵌入式Linux操作系统与图像处理技术及网络传输相结合,设计出一种基于嵌入式web服务器的C/S模式的远程监控系统。     

基于声源定位技术的智能视频监控系统

针对目前的大部分视频监控系统都是基于图像检测的静态或动态监控,提出了在智能视频监控系统中应用声源定位和摄像头动态采集进行联合判决的方案。系统采用麦克风阵列对声源进行定位,然后驱动摄像头转动到声源位置监控,通过图像分析给出报警动作。实验结果表明,该系统在低噪声干扰的实验环境下,能实现对声源的有效定位,并进行异常情况报警。     

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.