基于嵌入式的远程图像采集传输系统的研究

本文就嵌入式系统的一些相关技术,以及一些网络技术的发展结合起来,介绍嵌入式系统的一些模块的程序设计,通过实质性的一些技术研究,来实现远程图像的采集以及传输。在传输过程中,为了提高系统的稳定性,对嵌入式系统中的图像传送提出了一些新的要求,实现了嵌入式系统的优化。     

基于嵌入式系统的图像采集与传输设计

介绍了基于嵌入式Linux和S3C2410平台的图像采集传输系统.该系统通过USB摄像头采集图像数据,采用Video4Linux模块提供的编译接口进行视频采集程序的设计,经压缩编码,通过网络实时传输,介绍了其服务器端软件的系统设计,包括摄像头驱动和图像采集程序的实现、图片的网络发送和接收、多线程同步等内容,可广泛应用于远程监控系统、可视电话、工业控制等.     

基于硬压缩的网络图像传输系统的研制

随着嵌入式系统软、硬件的快速发展和通信带宽的拓展,网络图像传输将广泛应用于各领域。基于硬压缩的网络图像传输装置是以S3C4510B微处理器和MV3018芯片为核心的嵌入式网络图像传输系统。通过图像采集模块OV7660获取图像信号后,由MV3018完成图像的JPEG或MJPEG的压缩功能,实现图像的硬件编码,最后通过芯片RTL8201完成与互联网的接口。嵌入式处理器S3C4510B运行μClinux操作系统,实现了图像数据的采集、压缩和网络传输。实验证明,该系统可作为网络图像传输系统的平台。     

嵌入式系统在测绘实训教学系统中的应用研究

介绍一种基于嵌入式处理器ARM9及Linux操作系统的测绘实训监控系统,该系统的核心部分主要包括实训场地图像采集编码、网络传输.将当前较为成熟的嵌入式技术应用于测绘学实训教学系统,给出了系统的功能和结构及硬件原理框图和软件设计思路.     

嵌入式监控系统中断点续传的设计与实现

智能监控设备（嵌入式系统）在远程控制领域已广泛应用,同时嵌入式TCP/IP协议已成为嵌入式网络中广泛应用的通信协议。为了提高嵌入式监控设备图像或视频传输的可靠性和稳定性,设计并实现了一种基于嵌入式TCP/IP协议的嵌入式监控设备的图像或视频断点续传的功能。文中详细论述了嵌入式设备断点续传的实现方法和关键技术,并给出了程序实现的流程图。实际应用表明,这种设计能够有效地满足嵌入式系统中图像或视频稳定、可靠的传输的需求。     

数码电子警察系统的设计

介绍了采用嵌入式操作系统的数码电子警察系统的实施方案及图像传输方式。该电子警察系统采用高分辨率数码相机作为图像拍摄主体，采用嵌入式PC控制数码相机的快门、闪光灯、照片本地下载和图像网络传输等，实际运行证明效果良好。     

Linux嵌入式网络仪器的远程图像通信系统实现

为了在嵌入式中获得数字图像的远程通信和Internet传输,实现了基于uClinux嵌入式操作系统的图像信息采集网络仪器和通过拨号方式的嵌入式远程图像通信系统。网络仪器由MCF5272为硬件核心,以uClinux为操作系统。采用拨号方式实现远程接入Internet。图像经过解码和编码后,以文件方式保存和传输。介绍了图像采集网络仪器的构成、远程图像通信系统的组成、接入Internet的uCl; nux拨号方式、接收图像信息的Internet远程服务器的配置、嵌入式中图像文件自动传输与接收设计。并通过实验检验了网络仪器和远程通信的实现方案。结果表明,在Linux嵌入式网络仪器中采用远程拨号方式可以实现图像的因特网通信。     

基于GPRS的智能家居安全监控

为了掌握智能家居的安全性,需要监测家居的图像信息;采用嵌入式系统获取家居的监测图像,通过GPRS无线远程通信和Intemet传输,实现了基于uClinux嵌入式操作系统的图像采集网络仪器和通过GPRS传输的家居远程图像通信系统;网络仪器以MCF5272为硬件核心,以uClinux为操作系统,采用GPRS方式实现远程接入Internet;图像经过解码和编码后,以文件方式保存和传输;介绍了图像采集网络仪器的构成、GPRS远程家居图像通信系统的组成、接人Internet的uClinux方式、嵌入式中图像文件自动传输与接收设计,并通过实验检验了网络仪器和家居远程通信的实现方案;结果表明,通过GPRS和网络仪器,可以实现家居的安全监控,从而保护家居的财产安全.     

嵌入式IP网络多媒体监控系统

基于嵌入式和IP多播技术，实现嵌入式IP网络多媒体监控系统。分析了系统实现策略、组播管理与控制、嵌入式网络协议模型，并对网络服务器不同软硬件平台性能进行了对比分析。实验表明该模型结构灵活、简单、图像传输流畅。现已应用于高速公路监控现场。     

基于ARM的机器人远程网络视频监控系统

介绍了一种基于嵌入式Linux和ARM微处理器的六足仿生救援减灾机器人嵌入式远程网络视频监控系统。系统以嵌入式Linux和嵌入式微控制器S3C2440为核心平台,利用USB摄像头采集视频信号,采用TCP/IP协议技术进行网络通信,传输采集到的图像画面。使用Web浏览器或其他客户端程序通过PC机接收摄像头传输的画面,实现机器人远程画面的实时监控。     

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.