基于嵌入式Linux图像采集恢复和应用

本文首先介绍针时S3C2410芯片和Linux操作系统平台扩展的USB图像采集模块的软硬件和RGB图像数据流的采集:然后在嵌入式Ljnux平台上实现RGB流转换成BMP格式图片;最后通过网络把图片传送到远程终端上运用Matlab7.1进行处理,实现对加工零件远程检测.     

基于微型机器人的图像采集和传输系统

介绍了一种应用于微型机器人的视觉采集和传输系统,详细介绍系统硬件模块,以及各模块之间的接口设计,驱动原理,程序算法.该系统采用CMOS图像传感芯片进行图像采集,在ARM芯片外部总线上扩展USB模块,上位机方面通过编程完成接收USB接口数据和显示动态图像的功能.该系统具有体积小,功耗低,传输速率较高,可应用到微型机器人视觉系统以及微装配系统中,通过实验验证上位机能实时显示所接收的图像,实现了预期的图像传输功能.     

基于ARM-linux的显微镜自动对焦系统研究

本文介绍了一种在ARM-linux平台下实现显微镜自动对焦的方法.给出了以s3c2410处理器为核心,采用通用型USB摄像头进行采集图像、步进电机模块作为传动装置的系统软硬件方案及其实现步骤,并对如何在Linux平台下编写CMOS图像采集、图像清晰度评价函数等核心程序进行了讨论.     

基于ARMLinux的图像采集与解码的实现

以S3C2440和ARMLinux操作系统为基础,研究了视频图像的采集与解码的实现方法.对Linux下的视频采集技术进行了分析,介绍了Video4Linux编程接口的使用方法,以使用USB摄像头采集图像为例,将采集到的JPEG格式的图像数据利用赫夫曼解码及反离散余弦变换等方法,将其解码为RGB格式的图像,最终在LCD上显示.实现了具有视频采集、软件图像解码及显示功能的模块,可以应用到实际中.     

基于运动检测的远程图像采集系统的设计与实现

文章设计了一种基于运动检测的FPGA远程图像采集与存储系统,并给出了系统整体设计方案和核心的运动检测模块的具体实现方法。该系统主要由图像采集模块,运动检测模块,图像存储模块以及网络接入模块组成。该设计在FPGA多媒体开发平台EP2C70的基础上添加基于LAN91C111的网络接入模块来实现,利用Verilog语言在该平台上具体实现运动检测算法。试验证明该系统可以快速并智能化采集图像信息,快速的检测异常运动物体,采集的图像信息被实时存储或者通过网络接入模块实现远程传输。     

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.     

WinCE下基于ARM的USB摄像头图像采集

目前基于linux操作系统的图像采集系统应用研究较多,而针对Windows CE平台下的探讨较少,本文着重探讨了基于ARM9内核和Widnwos CE平台的图像采集系统的设计,完成了Windows CE平台下的USB摄像头驱动软件的开发,并提出了一种提高实时显示图像数据品质的方法,最终实现了Windows CE平台下视频图像的采集和显示.     

基于Simulink的车牌识别系统仿真平台

基于Matlab的Simulink设计的车牌识别系统的仿真实验平台,可以实现从一幅图像到识别出车牌字符的仿真过程.先建立车牌识别系统的原理模型,根据该原理模型应用Simulink实现系统仿真实验平台的图像采集模块、车牌定位模块、字符分割模块和字符识别模块.最后,将各个模块连接起来形成仿真实验平台.实验结果表明,该平台不仅能够满足车牌识别过程中各个模块的测试要求,也能满足车牌识别系统的测试要求,具有很好的性能.     

基于FPGA的线阵CCD实时图像采集系统

设计了一种基于现场可编程逻辑器件的线阵CCD实时图像采集系统。系统采用线阵CCD TCD2252D作为图像传感器,使用CCD专用信号处理芯片AD9826对CCD信号去噪并实现高速A/D转换,同时用USB接口芯片完成CCD数据的传输,最后在上位机显示采集的图像数据。整个系统由基于Verilog的CCD驱动模块、CCD输出信号处理模块、双口RAM缓存模块、USB接口控制模块等组成,结合上位机模块实现对CCD输出图像的准确采集、显示和保存。实验结果表明,该系统能实时采集和显示图像信息,USB传输速度可达28 MB/s,系统实时性好。     

基于S3C2410的嵌入式图像传输系统的设计与实现

本文详细介绍了图像传输系统的硬件构造,以及基于该硬件模块下通过USB摄像头采集现场图像数据并通过Internet传输到远程终端的嵌入式图像传输系统的设计与实现。主要内容包括图像采集部分的软件实现及网络传输部分的实现。     

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.