浅谈视频分析技术在监控系统维护中的应用

监控摄像机数量的不断增加,监控的时间不断延长,给监控系统的维护工作带来了新的挑战。如何及时了解前端视频设备的运行情况,发现故障并检测恶意遮挡与破坏的行为？智能视频分析技术将是解决这一问题的最佳选择。     

浅谈视频分析技术在监控系统维护中的应用

监控摄像机数量的不断增加,监控的时间不断延长,给监控系统的维护工作带来了新的挑战。如何及时了解前端视频设备的运行情况,发现故障并检测恶意遮挡与破坏的行为？智能视频分析技术将是解决这一问题的最佳选择。     

智能识别视频图像质量分析系统在平安城市的应用

近年来,视频监控技术在智能交通、安防监控等各行各业得到了广泛的应用。随着视频监控设备数量的急剧增加,其自身设备的故障维护和管理面临越来越大的挑战。以往采用人工巡检的方式对监控视频设备的故障管理模式已经远远不能满足现实的需求。针对视频监控设备检测中的视频质量分析问题,本文设计并实现了一种视频质量实时检测系统,包括图像预处理、异常检测、结果输出、管理等四个模块。其中图像预处理模块主要是对视频图像格式、分辨率等进行处理;异常检测模块则是视频常见异常的检测算法实现部分;结果输出模块是对异常检测结果的可视化显示;管理模块则是为用户便于管理系统而设计的。测试结果表明该系统基本满足视频质量实时检测要求,不仅检测异常精度高,而且系统性能稳定。     

煤矿监控类系统远程故障分析平台

针对煤矿监控类系统故障处理时效性低、现场维护工作量大、运维成本高等问题,在对故障信息进行统一规范的基础上,设计了一种煤矿监控类系统远程故障分析平台。该平台分为设备层、网络层、系统层和运维层。设备层内置具备故障自诊断能力的故障探针,检测到故障后将关联信息缓存,并上传至网络层。网络层收到设备层传来的故障信息后,先对设备层故障信息进行缓存,再连同网络层产生的故障信息一起打包上传至系统层。系统层部署的故障信息采集软件可通过内存接口、数据库或文本文件等方式从监控类系统上位机软件中获得故障信息,同时支持网络层设备故障信息直接采集,将故障信息缓存后传输至运维层。运维层将接收的故障信息存入故障信息中心库进行分析和推送。该平台可为煤矿监控类系统故障分析提供重要的数据支撑,为煤矿监控类系统运维服务提供有效的技术保障。     

基于单片机的多路监控打印系统

介绍一种基于MCS—51单片机的多路监控打印系统。该系统可以监控8路模拟信号，键盘设定所检测信号的物理意义，并可设置信号出现故障的门限电压，记录、打印故障发生时刻及其参数。     

远程专家诊断系统的应用研究

随着设备采购日趋国际化、分散化,设备供应商与用户往往分隔两地.传统的设备维护是在故障发生之后维护人员奔赴现场进行维修,无论对供应商还是对用户来讲,都很不经济.加之维护人员到现场后才能根据设备检测数据作出故障诊断,然后开始维修工作,因此相当缺乏效率,而设备远程监控与诊断维护技术的出现,为上述问题的解决提供了有效途径,并已...     

图像识别在箱式变电站监控与保护系统中的应用

在箱式变电站监控与保护系统中应用远程数字视频监控与图像识别技术有利于及时进行设备维护和故障排除。本文介绍了远程数字视频监控与图像识别技术及其应用现状，说明了一般的图像识别过程。采用图像识别技术可对设备信号灯、7段式数字、指针位置和开关位置进行识别，介绍了具体识别过程。指出远程数字视频监控与图像识别技术在电力系统中具有广阔的应用前景。     

一种设备业务故障分级检测与预警聚合分析模式研究

传统故障预警检测方法存在普适性差、预警信息不详细、缺乏针对性的问题.针对当前遇到的问题,通过分析设备业务运行状态与监控统计数据特点,将分类与聚合的方法应用于设备业务故障预警检测,设计了一种设备业务故障分级检测与预警聚合分析模式,并详细阐述该检测模式的实现方法.     

基于物理检测方式的胶轮车运输监控系统

针对基于射频识别技术的胶轮车运输监控系统建设投入高、维护量大、不适应某些矿区需求等问题,提出了一种基于物理检测方式对井下车辆进行定位的胶轮车运输监控系统,介绍了系统总体架构、胶轮车判定方法、系统控制逻辑等。应用结果表明,该系统能够有效识别胶轮车位置,较基于射频识别技术的胶轮车运输监控系统安装及维护更加简便。     

电信动力及环境集中监控系统解决方案

【系统概述】动力设备及环境集中监控系统是用现代电子监测、控制装置代替人工，对分布的通信局（站）的电源、空调、油机、蓄电池、高低压配电等多种设备和环境的各种参数、图象、声音等进行遥测、遥信和遥控，实时监测其运行参数，诊断和处理故障，记录和分析相关数据，从而实现通信局（站）少人或无人值守，并对设备进行集中监控和集中维护的计算机控制系统。它是数据采集、网络传输、计算机软件／硬件设备和其它多种技术的综合应用。     

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.