基于TMS320C6701的嵌入式智能视觉监控系统设计与实现

为了使视觉监控系统具有自主能力,本文设计了一种基于嵌入式高速DSP处理器TMS320C6701的运动目标自动跟踪系统,通过对摄像机获取的序列图像进行自动分析,实现对动态场景中目标的定位、识别和跟踪,并在此基础上分析和判断目标的行为。首先介绍了系统的硬件和软件设计,然后运用差分图像法,通过阈值图像分割来检测运动目标,并采用形心跟踪算法来自动跟踪目标。实验结果表明该系统取得了较好的跟踪效果。     

基于TMS320DM642的运动跟踪系统的设计与实现

为了使视觉监控系统具有自主能力,设计了基于TMS320DM642处理器的运动物体跟踪系统.分别介绍了系统的硬件和软件设计,提出了基于图像差分的特征等实用跟踪算法来跟踪运动目标.实验结果表明,该系统具有在复杂背景下实时检测识别和跟踪运动目标的能力.     

基于图像采集卡的智能安防监控系统设计

本文研究了基于Matrox图像采集卡的智能安防监控系统的总体解决方案,硬件设计部分详细叙述了该系统的图像采集模块设计和云台控制模块设计.通过对摄像机采集的图像进行运动目标的跟踪分析.产生控制信号,控制承栽摄像头的云台运动.以实现运动目标的跟踪:软件设计部分.针对运动目标的检测跟踪各种跟踪方法,详细研究并实现了基于时间差分的运动目标检测方法.完成了系统整体软件设计.实践证明,该系统具有较好的检测效果.     

交通监控系统中运动目标分类和跟踪研究

文章讲述了交通监控系统中应用视频图像流来跟踪运动目标并对目标进行分类的具体 过程和原则．基于目标检测提出了双差分的目标检测算法，目标分类应用到了连续时间限制 和最大可能性估计的原则，目标跟踪则结合检测到的运动目标图像和当前模板进行相关匹配 ．实验结果表明，该过程能够很好地探测和分类目标，去除背景信息的干扰，并能够在运动 目标部分被遮挡、外观改变和运动停止等情况下连续地跟踪目标．     

六足机器人动态目标检测与跟踪系统研究

动态目标检测与目标跟踪是图像领域的热点研究问题,为研究其在移动机器人领域的应用价值,设计了六足机器人动态目标检测与跟踪系统。针对非刚体运动目标容易被检测为多个分散区域的问题提出区域合并算法,并通过对称匹配、自适应外点滤除对运动背景进行精确补偿,最终基于背景补偿法实现对运动目标的精确检测。研究了基于KCF（Kernel Correlation Filter）的目标跟踪算法在六足机器人平台上的应用,设计了自适应跟踪算法实现六足机器人对运动目标的角度跟踪。将运动目标检测及跟踪算法应用于六足机器人系统。实验表明,在六足机器人移动过程中,系统可对运动目标进行精确检测与跟踪。     

基于卡尔曼滤波的移动机器人运动目标跟踪

提出了一种基于卡尔曼滤波的运动目标快速跟踪算法。针对复杂背景下彩色运动目标跟踪问题,采用基于颜色特征和形状特征相结合的方法进行目标识别。利用卡尔曼滤波器的预测功能,预测运动目标在下一帧中的位置,将图像全局搜索问题转换为局部搜索,提高了系统的实时性。实验结果表明:该算法满足移动机器人运动控制的实时性要求,实现了对运动目标的快速跟踪。     

复杂背景下运动点目标的检测和跟踪

为了解决复杂背景下运动点目标的检测和跟踪问题,本文提出了一种基于图像差分和聚类的运动目标检测和跟踪算法.该算法首先根据图像配准的方法,对序列图像进行差分运算,提取出候选的运动目标.在此基础上,利用运动目标在空间和时间上的相关性以及运动目标的轨迹所具有的连续性,采用一种特殊的聚类方法,从噪声环境中正确检测出运动目标的轨迹,并实现对运动目标的跟踪.实验表明该算法能快速检测出复杂背景下的运动点目标,并能有效处理轨迹相交和检测过程中出现新目标的情况.     

视频监控中多运动目标的检测与跟踪

在基于递归方法的二值图像连通区域像素标记算法基础上,融合图像预处理技术,并对预处理后的图像进行改进,同时根据运动目标的几何特征,在实时监控视频图像中更好地定位运动目标,从而实现多运动目标的检测与跟踪。实验结果表明该方法可靠高效,也可以满足实时视频监控系统的需要。     

空基红外小目标检测与跟踪系统

近些年,红外成像技术快速发展,红外图像具有背景复杂、信杂比低、目标尺寸小等特点,为多运动目标的实时检测跟踪带来了挑战。该空基红外小目标检测与跟踪系统的构建包含三个部分：数据集制作、小目标检测和多目标跟踪。首先使用条件对抗生成网络和图像融合算法生成的仿真数据与真实数据相结合,搭建了红外小目标数据集;其次,小目标检测方面,采用了基于YOLOv3-tiny检测器进行红外小目标检测;多目标跟踪方面,采用了基于卡尔曼滤波算法和匈牙利算法的多目标跟踪方法;最终,在满足实时性的要求下,系统取得了较好的效果。     

基于机器视觉的航母舰面目标跟踪系统设计

针对航母舰面目标智能监控的问题,设计实现了一种基于机器视觉的航母舰面目标跟踪系统.该系统主要由前端跟踪处理系统和后台存储系统组成,前端实时获取舰面目标运动视频,并输入到处理器中进行目标跟踪,同时负责分析目标的异常运动;后台主要负责视频信息和跟踪目标框位置信息的记录.经过测试,系统跟踪的准确性和实时性较高,能够满足舰面实...     

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.