基于DM365显控平台的设计与实现

为了实现目标跟踪系统显控模块或手持显示终端设备的需求,设计了一个基于TMS320DM365平台的显示及控制平台。通过模拟或数字LCD实现本地模拟、数字视频预览;按键及SATA硬盘实现系统操作及视频存储,视频存储用于关键信息回放;将标清视频通过H.264硬编码,经RTP传输到目标RTSP服务器,实现远程实时监控;SPI通信、串口通信等模块实现显控平台与视频处理平台的信息交互。实践验证,该方案能够提供比较完善的人机交互接口系统,符合多应用场景的需求。     

基于DSP的脱机远程视频监控终端

介绍一个基于DSP的脱机远程视频监控终端的设计和实现，该系统采用CPLD完成图像采集的控制逻辑，以ADSP-21535为中央处理器完成图像MPEG4编码、编码数据网络传输平和本地存储。介绍监控终端的系统结构与流程，以及图像采集模块和网络接口模块的软硬件设计与实现，给出了系统的性能指标。     

一种基于以太网的视频监控系统的设计

本文提出了一种基于以太网的视频监控系统的设计方案.采用TMS320DM642为核心处理器,设计了视频采集、显示模块和网络接口模块.开发了H.264压缩算法和流媒体实时传输协议(RTP),并编写了软件,实现了视频图像的编码压缩、本地存储和网络传输.运行结果表明,本系统能够满足实时监控的要求,且压缩效率高,图像质量好.     

基于边缘计算的人脸识别视频传输系统设计

随着计算机视觉和模式识别领域的应用升级需要，动态人脸识别技术也得到了飞速发展[1]。目前视频监控领域中的人脸识别处理方法多只在设备前端做简单的识别和跟踪，大量复杂运算，包括人脸特征值的比对和大数据的处理部分都在服务端完成。对于视频监控的使用方，该方法无法在监控端实时显示人脸的识别和比对结果。针对这种需求，本文提出了一种基于边缘计算的人脸识别视频传输方案，实现视频传输的采集端和播放端对视频中人脸识别效果的同步。该方案中，终端设备的视频处理模组对视频数据同时进行视频编码和人脸识别，根据终端人脸库，提取分析人脸识别结果并记录视频中的坐标信息，并采用同步封包机制将两者融合，从而获得同时具有编码数据和人脸信息的视频数据包。通过验证系统试验证明，该方案可解决视频直播中的人脸框显示和跟踪的同步问题，并且有较高的准确性和实时性。     

基于电力线通信的多媒体传感器监控系统设计

选择INT5500模块作为电力线通信模块硬件,S3C2440处理器模块作为多媒体传感器监控前端和监控端的核心模块.多媒体传感器监控系统采用客户机/服务器模式.本系统实现了对监控前端所处环境温度、湿度以及视频图像的实时监控,能够在手持终端上的实时显示,并可以通过USB接口存储到外部存储器上.测试数据表明:该系统运行稳定,功能扩展性强,适宜用在能提供动力电源但布线困难的地方.     

基于电力线通信的视频监控系统终端设计

为满足家庭和实验室等局部小范围内快速搭建监控系统的需求,设计基于电力线通信(PLC)的视频监控系统终端。该终端系统的PLC模块实现数据在电力线上的传输,控制器模块采用S3C2440处理器芯片,基于Linux操作系统实现视频采集、数据压缩、网络传输、实时显示、存储等功能。实际监控结果表明,该终端成本低、监控网络搭建方便快速、功能扩展能力强。     

基于FPGA的视频采集系统设计

论文旨在研究一种基于FPGA的视频采集系统的实现方法,采用Verilog硬件描述语言设计并验证了系统中的I2C总线配置模块、ITU_R655视频解码模块、视频帧缓存模块和视频显示模块.通过该系统的设计,完成了对视频信息的采集,并能够进行实时显示,基于FPGA的系统设计为视频采集提供了更加灵活高效的实现可能性.该系统具有体积小、效率高、成本低等优点,可广泛应用在视频处理系统、安防监控系统和视频传输系统等.     

基于DM365网络视频监控系统的设计与实现

采用DM365达芬奇视频处理芯片开发了嵌入式网络视频监控系统,选择H.264视频数据编码算法以提高数据编码效率.该系统软件包括视频监控服务器模块和客户监控端模块.运行于DM365平台上的视频监控服务器将采集的视频数据经过H.264编码器压缩后存储在硬盘上,并以RTP/RTCP协议传输给客户监控端;运行于PC机上的客户监控端程序可以实现摄像头的远程控制与实时监控现场.     

基于DirectShow和WPF的实时视频图像采集与处理系统设计与实现

当前视频图像的主要问题是当处理的数据量大时,执行效率低,很难实现实时性。采用Direct Show技术,很好地解决了这个问题。基于DirectShow可直接对内存中的视频数据进行处理,从而跨越硬盘数据读取的瓶颈。设计了以DirectShow和WPF为软件平台的实时视频图像采集系统,包括:视频图像采集与显示模块、图像浏览与处理模块、图像存储与管理模块。实验结果表明该方法应用在实时视频图像采集上可以达到较好的效果,在工程上应用是可行的。     

客运站安防工作中的智能视频监控系统的分析与设计

智能视频监控设计以普通的网络视频监控为基础,采用数字视屏监控,系统平台满足总公司分层级组网要求,所有设备间均通过计算机网络系统来实现通讯.摄像机采用网络数字摄像机、控制主机、屏幕墙采用视频控制服务器控制,图像存储录像采集中存储.通过嵌入在前端处理设备中的智能视频模块能够对所监控的画面进行实时分析,提供24*7全天候可靠实时监控;前端处理设备具有集成强大的图像处理分析能力,用户能够更加精准的定义安全威胁的特性,大大提高报警精确度;减少漏报率、误报率,尽量避免出现无用数据,使得响应速度大大提升.     

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.