基于CPLD的CIS传感器图像采集系统

接触式图像传感器(CIS)是图像扫描领域常用的传感器,在具体工程应用中,CIS传感器的图像采集方案有很大的差异,性能也参差不齐.针对CIS的高速采集提出了一种新的实现思路,相比传统的方案具有通用性好、采集速度高、易扩展、成本低等优点.详细论述了利用CPLD进行CIS传感器高速图像采集的设计方案,并对实验结果进行了详细地分析.     

基于FPGA和CIS的人民币图像采集系统设计

对基于FPGA和CIS的人民币图像采集系统进行了研究,并试制了实验设备.在分析CIS各种驱动信号时序关系的基础上,利用FPGA实现了CIS所需的各种驱动信号,完成了FPGA的逻辑设计.在此基础上进行了图像采集实验,并针对采集的灰度图像数据的稳定性和采集速度进行了分析.实验结果表明:该实验系统在图像采集速度和数据稳定性方面是比较满意的.     

基于DSP的CIS信号采集与处理技术

CIS(接触式图像传感器)是一种新型图像传感器。介绍了CIS的主要结构、特点和工作原理，提出了一种基于DSP的CIS信号采集与处理方案。与传统的图像采集系统相比，该系统由于采用CIS作为图像传感器，DSP作为控制和运算核心，因而具有电路简单，控制方便的特点。最后，给出了该系统在实际应用中的工作波形。     

基于ARM的纸币号码识别系统

针对纸币号码识别系统需求不断攀升,采用ARM,FPGA技术及接触式图像传感器（CIS）图像采集系统,提出一种实时采集高速图像信息及图像预处理的方法;系统以硬件设计为主,采集到的CIS图像信号经过明暗输出补偿、二阶滤波、模数转换、二值化等前置调理,保存在静态同步内存（SRAM）中,供ARM作进一步图像处理;系统中CIS传感器的时序信号由FPGA设计,实验表明,该识别系统运行稳定可靠,实时性好,集成度高,采集图像清晰,号码识别准确率高。     

基于ARM及CPLD的纸币图像采集系统的设计

介绍了一种自行设计的基于ARM及CPLD技术,利用接触式图像传感器(CIS)采集纸币号码的图像采集系统,提出了一种实时采集高速图像信息及图像预处理的方法;系统以硬件设计为主,采集到的CIS图像信号经过明暗输出补偿、二阶滤波、模数转换、二值化等前置调理,保存在同步动态内存(SDRAM)中,供ARM作进一步图像处理;系统中CIS传感器的时序信号由CPLD设计,实验表明,采集到的二值化图像清晰;这项研究成果可以推广到证券、票据号码的录入系统以及其他相关领域的字符识别系统.     

基于FPGA和Qt的图像处理系统设计

针对CIS图像采集与处理系统实时性高、功耗低、体积小、图像处理类型多样的要求,设计了一种以FPGA为主处理器,Qt软件为协处理器的单通道CIS图像采集处理系统。利用FPGA集成度高、速度快的优点,完成图像的前端采集和预处理;Qt软件实时显示图像,并可根据需要调用其丰富的库资源,完成各种复杂的图像处理操作。系统有通用性强易于升级的特点,加载上相应的软硬件程序之后,可实现对图像的采样、预处理、传输、PC端实时显示及后续处理等功能。详细分析了系统的设计思路及实现方式,并在软硬件平台上进行了算法仿真和功能验证。实验结果表明：该系统实时性好,图像处理功能强大,灵活性好,能满足设计要求。     

基于CIS及LC5510的高速图像采集系统

一种使用接触式图像传感器(CIS)、高速A/D转换芯片TLC5510和低档DSP芯片TMS320VC5402实现的高速图像采集系统的设计方案,给出了系统的体系结构以及关键实现技术。     

基于CPLD和接触式图像传感器的图像采集系统

介绍一种基于接触式图像传感器（CIS）的图像采集系统。复杂可编程逻辑器件（CPLD）采用MAXⅡ系列的EPM570芯片,实现接触式图像传感器的时序驱动和控制。采用高速A／D转换器TLC5510将接触式图像传感器所输出的模拟电压转换为像素灰度的数字量。利用复杂可编程逻辑器件产生数据的存储地址,并控制存储器将A／D转换的结果进行存储。文中详细叙述总线切换电路,实现双存储区的轮换工作,使得系统在采集图像的同时可以处理前一帧图像数据,提高图像采集与处理的效率。     

AM5706通过VIP接口与FPGA图像数据传输实现

介绍了一种AM5706通过VIP接口与FPGA图像数据传输的实现方法,该方法是票据图像扫描模块的一个关键技术,票据图像扫描模块可采集两级CIS图像传感器信号,经模数转换后送入FPGA进行灰度值补偿预处理,FPGA积累完整一行图像数据后,输出到AM5706的VIP接口.AM5706 VIP设备每接收到一幅完整的图像数据,...     

基于CIS的数字式求积仪设计

为了快速、准确地测量闭合图形的面积,设计了由接触式图像传感器(CIS)、步进电机、扫描平台和MC9S12XS128微控制器系统组成的数字式求积仪。通过步进电机使图像传感器沿导杆匀速水平运动,扫描玻璃平板上白纸上的图形。单片机采集图像信号并进行点阵识别,根据捕捉到的两点之间的时间间隔和图像传感器移动速度,通过数值积分求出图形面积,并在液晶显示器上显示。实验结果表明,完成一幅图形的测量只需12 s,横向和纵向分辨率分别为600 dpi和254 dpi,完全满足实验教学的要求。     

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.