智能识别可视化视频监控系统软件设计

随着国民经济、网络以及信息技术的迅速发展,监控系统在各行业的应用日益广泛。虽然监控系统已经广泛的存在于各种公共场所,但实际的监控任务仍需要较多的人工完成,而且现有的视频监控系统通常只是录制视频图像,提供的信息是没有经过解释的视频图像,只能用作事后取证,没有充分发挥监控的实时性和主动性。智能识别可视化视频监控系统在常规监控系统基础上加入基于无线传感器网络的监测网络子系统实现了对入侵对象的检测报警,大大提高了监控系统的实时性和主动性,本文对视频监控系统软件设计进行了详细介绍。     

基于三维虚拟警戒空间的异常入侵行为自动识别

针对目前视频异常入侵行为识别的不足,提 出了基于三维虚拟警戒空间的异常入侵行 为自动识别方法。基于人头检测与跟踪方法,根据视频监控场景中单一行人目标信息,建立 行人三维平面方程, 构建视频监控场景三维立体虚拟警戒空间,从而将行人是否进入二维场景警戒区域,转化为 行人是否闯入三维 立体虚拟空间,并基于行人头部投影射线的滑动滤波统计,实现行人是否入侵敏感保护区域 的有效识别。所提 方法不受设定警戒区域的规则形状限制,也无需对场景内容事先学习。对不同视频场景 的实验验证及同类方法的定量对比结果表明, 所提方法有效、 可行。     

基于嵌入式的农场智能监控系统研究

由于利用有线网络进行通信以及监控端体积过大,导致视频监控系统的隐蔽性差,视频监控的威慑力和灵活性受到影响,基于此,利用DaVinci平台的Linux嵌入式系统设计了一套网络视频传输系统,完成了基于DaVinci平台的农场视频网络传输系统设计,包括H.264编码、农场视频的采集以及基于RTP协议的网络传输等功能。嵌入式的农场智能监控系统运行成功后,采用本地计算机上的VLC播放器能对摄像机采集的视频进行实时播放,通过对系统测试分析证明此系统稳定可靠,完全满足视频网络传输的需求。     

全光纤分布式视频联动长距离周界安防监控系统

构建一种具有视频联动功能的全光纤分布式长距 离周界安防监控系统。系统采用全光纤分布式 扰动传感技术,实时监控作用在光缆上的各种扰动入侵行为,采用信号处理技术对入侵事 件进行定位和 识别,根据不同事件的特征发出警报信号,同时触发视频监控系统实现联动,摄录扰动行为 的视频信息, 并对其进行进一步处理。测试了系统的定位精度与误报率,结果表明,系统能有效实现 与视频的联动功能,定位准确度达到91%,在一般天气条件下误报率保持在一天3次以内 。本文系统将 新型光纤分布式传感技术、传统视频监控技术以及先进信号智能识别技术相融合,构成混合 式智能周界安全监控网络。     

基于IP多播技术的网络视频监控系统的研究

围绕IP多播技术在网络视频监控系统中的应用，深入讨论了系统中引入的IP多播技术所涉及到的一系列关键技术。根据网络视频监控系统原理图，使用UML语言构架出系统软件平台，给出实现基于IP多播技术的网络视频监控的一般算法，通过对WinSock套接字的实现，完成视频监控系统的网络通信软件的设计。     

无线Mesh网络视频监控系统客户端软件设计

结合无线Mesh网络(WMN)技术的特性,提出了一种基于Mesh网络的视频监控系统应用方案。利用DirectShow技术开发了基于WMN的视频监控系统客户端软件,软件采用客户机/服务器模式,实现了视频流的网络传输及远程控制等功能。终端通过摄像机和视频服务器完成视频采集压缩,利用WMN平台进行传输,客户端在Mesh网络的覆盖范围内通过因特网进行视频数据接收,实现无线视频监控。测试结果表明,系统播放流畅、实时性强,在无线视频监控中具有广泛的应用前景。     

网络视频监控系统的研究

随着网络技术,视频图像处理技术的发展,视频监控系统逐渐向网络化、智能化方向发展。智能视频监控系统借助计算机强大的数据处理能力,利用图像处理、模式识别和计算机视觉等技术在无操作人员的情况下,实时检测监控场景下的运动目标,并对其分析、定位、识别、跟踪和行为理解。通过网络的传送,人们获得视频更便捷,视频监控系统的应用也更加广泛。本文采用了基于视频采集技术、图像处理技术、网络技术,面向视频监控领域开发的一套智能化、网络化的视频监控系统解决方案。     

一种多区域视频监控入侵检测报警方法的研究

研究一种用于多区域视频监控的智能入侵报警方法.该方法以多线程技术为基础,采用基于混合高斯背景建模的移动侦测算法实现多个区域实时入侵报警;采用视频监控卡自带函数库实现监控视频的显示.提出了剪贴板完成视频数据流的械取和数据格式的转换,避免了硬盘的反复读写,提高了监控画质和程序运行速度.最后给出了实验结果,结果表明该方法能有效的对入侵目标进行检测报警,且误报率较低,为1%-2%.     

基于Zigbee的智能家居系统

对基于ZigBee技术对嵌入式Web的智能家居远程监控系统进行研究和设计。对家居设备通过Zigbee进行无线组网,把家居设备的信息和数字视频传输到因特网网络上,在因特网上设立一个"无线视频网关"WEB服务器,可供外部访问;实现将家居信息如温度进行实时的显示并进行后续的利用和控制;同时将收集各处传输进来的数字视频信息进行后续的处理和识别。如入侵检测,人脸检测和识别等。     

一种基于监控视频的出租车识别方法

研究了一种基于视频监控的出租车识别算法.对已经完成跟踪的车辆,通过提取车辆的方向梯度直方图(HOG)特征,作为支持向量机(SVM)分类检测的输入,进行车辆是否为出租车的分类识别.通过多窗口投票机制,增强了分类识别算法的准确性与鲁棒性.实验证明,该方法能准确进行出租车的分类识别,基于实际的标清监控视频,出租车的分类准确率达到90％左右.     

Technology innovation and process integrations for sub-100nm gate patterning

This paper presents a brief overview of the Applied Centura(R)DPS(R)system,configured with silicon etch DPS Ⅱ chamber, with emphasis on discussing tuning capability for CD uniformity control. It also presents the studies of etch process chemistry and film integration impact for an overall successful gate patterning development. Discussions will focus on resolutions to key issues, such as CD uniformity, line-edge roughness, and multilayer film etching integration.     

White organic light-emitting devices based on fac tris（2- phenylpyridine） iridium sensitized 5,6,11,12-tetraphenylnap -hthacene

We have fabricated the white organic light-emitting devices （WOLEDs） based on 4,4＇ -bis（2,2 -diphenyl vinyl）-1,1＇ - biphenyl （DPVBi） and phosphorescence sensitized 5,6,11,12,-tetraphenylnaphthacene （rubrene）. The device structure is ITO/2T-NATA （20 nm）/NPBX （20 nm）/CBP： x%Ir（ppy）3：0.5% rubrene （8 nm）/NPBX （5 nm）/DPVBi （30 nm）/Alq（30 nm）/LiF（0.5 nm）/A1. In the devices, DPVBi acts as a blue light-emitting layer, the rubrene is sensitized by a phosphorescent material, fac tris （2-phenylpyridine） iridium [Ir（ppy）3], acts as a yellow light-emitting layer, and N,N＇ -bis- （1-naphthyl）- N,N＇ -diphenyl -1, 1＇ -biphenyl-4,4＇ -diamine （NPBX） acts as a hole transporting and exciton blocker layer, respectively. When the concentration of Ir （PPY）3 is 6wt%, the maximum luminance is 24960 cd/m^2 at an applied voltage of 15 V, and the maximum luminous efficiency is 5.17 cd/A at an applied voltage of 8 V.     

Complete approach to automatic identification and subpixel center location for ellipse feature

To meet the need of automatic image features extraction with high precision in visual inspection, a complete approach to automatic identification and sub-pixel center location for similar-ellipse feature is proposed. In the method, the feature area is identified automatically based on the edge attribute, and the sub-pixel center location is accomplished with the leastsquare algorithm. It shows that the method is valid, practical, and has high precision by experiment. Meanwhile this method can meet the need of instrumentation of visual inspection because of easy realization and without man-machine interaction.     

小角度扩展相关性近似算法分析

本论文提出一种在多天线MIMO信道相关性建模中小角度扩展近似理论算法,并应用于分析MIMO系统性能。分析中分别对三种不同角能量分布情况下的空间相关性研发快速近似计算法,并同时提出双模(Bi-Modal)角能量分布情况下的近似运算。通过分析这些新方法的近似效率,可以得到计算简单、复杂度低、而且符合实际的MIMO相关信道矩阵,对系统级的快速高效计算法的研究和系统级的评估以及误差分析具有重要的意义。     

Curved crystal spectrometer for the measurement of X-ray lines from laser-produced plasmas

In order to diagnose the laser-produced plasmas, a focusing curved crystal spectrometer has been developed for measuring the X-ray lines radiated from a laser-produced plasmas. The design is based on the fact that the ray emitted from a source located at one focus of an ellipse will converge on the other focus by the reflection of the elliptical surface. The focal length and the eccentricity of the ellipse are 1350 mm and 0.9586, respectively. The spectrometer can be used to measure the X- ray lines in the wavelength range of 0.2-0.37 nm, and a LiF crystal （200） （2d = 0.4027 nm） is used as dispersive element covering Bragg angle from 30° to 67.5°. The spectrometer was tested on Shengnang- Ⅱ which can deliver laser energy of 60-80 J/pulse and the laser wavelength is 0.35 μm. Photographs of spectra including the 1 s2p ^1P1-1s^2 ^1S0 resonance line（w）, the 1s2p ^3P2-1s^2 1S0 magnetic quadrupole line（x）, the 1s2p ^3P1-1 s^2 ^1S0 intercombination lines（y）, the 1 s2p ^3S~1-1 s^2 ^1S0 forbidden line（z） in helium-like Ti Ⅹ Ⅺ and the 1 s2s2p ^2P3/2-1 s622s ^2S1/2 line（q） in lithium-like Ti Ⅹ Ⅹhave been recorded with a X-ray CCD camera. The experimental result shows that the wavelength resolution（λ/△ 2） is above 1000 and the elliptical crystal spectrometer is suitable for X-ray spectroscopy.     

Preparation and Characterization of TaN ALD Precursors

High purity organic-tantalum precursors for thin film ALD TaN were synthesized and characterized.Vapor pressure and thermal stability of these precursors were studied.From the vapor pressure analysis,it was found that TBTEMT has a higher vapor pressure than any other published liquid TaN precursor,including TBTDET,TAITMATA,and IPTDET.Thermal stability of the alkyl groups on the precursors was investigated using a 1H NMR technique.The results indicated that the tertbutylimino group is the most stable group on TBTDET and TBTEMT as compared to the dialkylamido groups.Thermal stability of TaN precursors decreased in the following order:TBTDET ＞ PDMAT ＞ TBTEMT.In conclusion,precursor vapor pressure and thermal stability were tuned by making slight variations in the ligand sphere around the metal center.     

A Versatile Mixed-Signal Pin Approach for Cost-Effective Test of Automotive ICs

Integrated circuits (ICs) intended for increasingly sophisticated automotive applications bring unique test demands. Advanced ICs for applications such as highly integrated automatic braking system (ABS) and airbag controllers combine high voltage digital channels, significant VI demands and precise timing capability. Along with continued missioncritical reliability concerns, the trend toward higher voltage operation and increased device integration requires specialized test capabilities able to extend across the wide operating ranges found in automotive applications. Among these capabilities, automotive test requirements increasingly dictate a need for a cost-effective versatile mixed-signal pin electronics with very high data rates reaching up to 50MHz with a voltage swing of-2 V to +28 V.     

Electronic Structure of Semiconductor Nanocrystals

This paper reviews our recent development of the use of the large-scale pseudopotential method to calculate the electronic structure of semiconductor nanocrystals, such as quantum dots and wires, which often contain tens of thousands of atoms. The calculated size-dependent exciton energies and absorption spectra of quantum dots and wires are in good agreement with experiments. We show that the electronic structure of a nanocrystal can be tuned not only by its size,but also by its shape. Finally,we show that defect properties in quantum dots can be significantly different from those in bulk semiconductors.     

Critical Stage Rule-Based Real Time Dispatch（RTD）System in Highly-Mixed-Products （HMP） FAB

An improving utilization and efficiency of critical equipments in semiconductor wafer fabrication facilities are concerned. Semiconductor manufacturing FAB is one of the most complicated and cost sensitive environments. A good dispatching tool will make big difference in equipment utilization and FAB output as a whole. The equipment in this paper is In-Line DUV Scanner. There are many factors impacting utilization and output on this equipment group. In HMP environment one of the issues is changing of reticule in this area and idle counts due to load unbalance between equipments. Here we'll introduce a rule-based RTD system which aiming at decreasing the number of recipe change and idle counts among a group of scanner equipment in a high-mixed-products FAB.     

Optical vibration and deviation measurement of rotating machine parts

It is of interest to get appropriate information about the dynamic behaviour of rotating machinery parts in service. This paper presents an approach of optical vibration and deviation measurement of such parts. Essential of this method is an image derotator combined with a high speed camera or a laser doppler vibrometer （LDV）.