基于DSP的多传感器数字视频监控系统

介绍了一种结构新颖、扩展性良好的数字视频监控系统.该系统由多块以DSP为处理核心的传感器(数字视频处理板卡)组成,传感器运行多通道的智能监控算法,并通过PCI总线与服务器主机进行交互.在服务器主机端,使用了微软.NET的Remoting技术对多个传感器进行统一管理,可向局域网范围内的用户提供视频监控服务.该系统可以使用普通模拟摄像头作为视频源进行本地实时智能监控,也可以使用网络摄像机作为视频源进行远程实时智能监控.     

高清数字摄像机的硬件设计

以TI公司的TMS320DM6467为核心芯片,200万像素的高清摄像头作为视频采集源,设计了一种高清的数字摄像机,该摄像机搭配一套完整的后台服务系统可以组成一套很好的数字视频监控系统.本文就所设计的摄像机的硬件部分进行介绍,并对设计中的重点进行了分析.     

Digital Ship Video Monitoring System Based on Wireless

根据船舶视频监控系统对系统结构和功能的新需求,采用TI公司的TMS320DM6446作为系统的主控部分,提出了基于EVDO的无线数据传输方案,设计了摄像机前端采集输出和主控模块等硬件电路,给出了通信控制等软件流程,并成功实现云台调节控制等功能.实际分析测试表明,该系统操作简便,创新性较高,可广泛应用于民用船舶的视频监控需求.     

视频监控摄像机自标定的一种新方法

对于许多可视跟踪和视频分析任务,精确的摄像机标定是非常重要的。提出一种新的视频监控摄像机自标定算法,它利用半正定规划来恢复摄像机的焦距和主点。说明如何将摄像机旋转自标定算法转化为凸优化问题,该方法将所需正定约束自动集成到优化过程,因此得到可靠和稳定的结果。基于合成数据和真实图像的实验,证实了算法有效性和可确定的收敛性。     

基于无线的数字式船舶视频监控系统

根据船舶视频监控系统对系统结构和功能的新需求,采用TI公司的TMS320DM6446作为系统的主控部分,提出了基于EVDO的无线数据传输方案,设计了摄像机前端采集输出和主控模块等硬件电路,给出了通信控制等软件流程,并成功实现云台调节控制等功能。实际分析测试表明,该系统操作简便,创新性较高,可广泛应用于民用船舶的视频监控需求。     

交通视频监控系统中TMS320DM642与嵌入式PC/104+模块的通信

描述了TI公司媒体处理器TMS320DM642HPI的主要特点，介绍了PCI桥接器PCI2040的结构原理，提出了通过PCI2040实现TMS320DM642与PC／104＋模块进行通信的设计方案。本方案充分利用PCI总线的高数据吞吐能力和DSP的HPI接口功能，可在DSP和PC／104＋模块之间实现较高的数据传输率，实现了PC／104＋实时读／写DSP任意片内存储单元的内容。最后给出交通视频监控系统的设计方案，详细说明了通信过程的软件编程。     

大数据挖掘技术在监所智能分析中的应用

一、公安监所视频监控智能分析应用现状 智能视频分析依赖于视频算法对视频内容进行分析,通过提取视频中关键信息．进行标记或者相关处理,并形成相应事件和告警的监控方式．人们可以通过各种属性描述进行快速检索。如果把摄像机看作人的眼睛．而智能视频监控系统可以理解为人的大脑。智能视频技术借助处理器的强大计算功能,对视频画面中的海量数据进行高速分析．获取人们需要的信息。     

基于场边界线的多摄像机智能监控系统研究

伴随视频监控系统的普及,多摄像机智能视频监控技术得到了广泛的研究和应用。特别是视频监控中的运动目标检测分割、运动目标跟踪和多摄像机协同技术,成为计算机视觉领域研究的热点。单摄像机跟踪常被应用的监控范围限制,当监控场景是一个室外环境或需要一个较大的观测范围时,常需要多摄像机进行多物体跟踪。为了建立一套有效的多摄像机智能监控系统,提出一种基于摄像机视野的重叠区域的协同监控方法,找出重叠区域的边界线即场边界线,旨在解决单摄像机监控范围有限的问题,实现对某一场景进行全景监控。在多摄像机系统中各个摄像机的场边界线在其他摄像机中可见的情况下,给出寻找它们的方法。基于此,可基本确定在多摄像机中的运动目标对应关系,获取多摄像机的拓扑关系。     

高清IP监控网络

DM355IPNC—MT5是一款基于TI达芬奇TMS320DM355数字媒体处理器与Aptina 5百万像素高清安全影像传感器的高清IP网络摄像机参考设计,该解决方案的电子材料清单成本（eBOM）低于40美元,有助于视频监控供应商以传统模拟视频摄像机的成本添加数字摄像机至现有系统中,并能在适当时机灵活地升级至IP高清网络摄像机。     

Fibridge应用德州仪器与ZOT合力提供的参考设计

总部位于北京的视频监控公司Fibridge日前宣布可为需要高清晰度和高分辨率视频分析的视频监控客户，提供基于因特网协议（IP）的摄像机解决方案且能充分满足其需求。凭借德州仪器（TI）．零壹科技（ZOT）以及ObjectVideo？于今年9月份推出的基于DM355的优化IP网络摄像机参考设计，Fibridge在短短四个月内便开发出了这款高清IP摄像机。     

Development of the readout system for waveguide multilayer optical card

Waveguide multilayer optical card （WMOC） is a novel storage device of three-dimensional optical information. An advanced readout system fitting for the WMOC is introduced in this paper. The hardware mainly consists of the light source for reading, WMOC, motorized stages addressing unit, microscope imaging unit, CCD detecting unit and PC controlling ＆ processing unit. The movement of the precision motorized stage is controlled by the computer through Visual Basic （VB） language in software. A control panel is also designed to get the layer address and the page address through which the position of the motorized stages can be changed. The WMOC readout system is easy to manage and the readout result is directly displayed on computer monitor.     

Nanoimprint Lithography -A Next Generation High Volume Lithography Technique

IntroductionNanoimprint Lithography is a well-acknowl-edged low cost, high resolution, large area pattern-ing process. It includes the most promising methods,high-pressure hot embossing lithography (HEL) [2],UV-cured imprinting (UV-NIL) [3] and micro contactprinting (m-CP, MCP) [4]. Curing of the imprintedstructures is either done by subsequent UV-lightexposure in the case of UV-NIL or by cooling downbelow the glass transition temperature of the ther-moplastic material in case of HEL…     

Collinear phase-matching study of terahertz-wave generation via difference frequency mixed in GaAs and Inp

The collinearly phase-matching condition of terahertz-wave generation via difference frequency mixed in GaAs and InP is theoretically studied. In collinear phase-matching, the optimum phase-matching wave hands of these two crystals are calculated. The optimum phase-matching wave bands in GaAs and lnP are 0.95-1.38μm and 0.7-0.96μm respectively. The influence of the wavelength choice of the pump wave on the coherent length in THz-wave tuning is also discussed. The influence of the temperature alteration on the phase-matching and the temperature tuning properties in GaAs crystal are calculated and analyzed. It can serve for the following experiments as a theoretical evidence and a reference as well.     

Effects of the alloy compositions on the phonon-polaritons in ternary mixed crystals

Composition dependence of bulk and surface phonon-polaritons in ternary mixed crystals are studied in the framework of the modified random-element-isodisplacement model and the Bom-Huang approximation. The numerical results for Several Ⅱ - Ⅵ and Ⅲ- Ⅴ compound systems are performed, and the polariton frequencies as functions of the compositions for ternary mixed crystals AlxGa1-xAs, GaPxAS1-x, ZnSxSe1-x, GaAsxSb1-x, GaxIn1-xP, and ZnxCd1-xS as examples are given and discussed. The results show that the dependence of the energies of two branches of bulk phonon-polaritons which have phonon-like characteristics, and surface phonon-polaritons on the compositions of ternary mixed crystals are nonlinear and different from those of the corresponding binary systems.     

Influence of PVK ： NPB hole transporting layer on the characteristics of organic light-emitting devices

A doping system consisting of NPB and PVK is employed as a composite hole transporting layer （CHTL）. By adjusting the component ratio of the doping system, a series of devices with different concentration proportion of PVK ： NPB are constracted. The result shows that doping concentration of NPB enhances the competence of hole transporting ability, and modifies the recombination region of charge as well as affects the surface morphology of doped film. Optimum device with a maximum brightness of 7852 cd/m^2 and a power efficiency of 1.75 lm/W has been obtained by choosing a concentration proportion of PVK ： NPB at 1：3.     

New insert layer structure OLEDs

An insert layer structure organic electroluminescent device（OLED） based on a new luminescent material （Zn（salen）） is fabricated. The configuration of the device is ITO/CuPc/NPD/Zn（salen）/Liq/LiF/A1/CuPc/NPD/Zn（salen）/Liq/LiF/A1. Effective insert electrode layers comprising LiF（1nm）/Al（5 nm） are used as a single semitransparent mirror, and bilayer cathode LiF（1 nm）/A1（100 nm） is used as a reflecting mirror. The two mirrors form a Fabry-Perot microcavity and two emissive units. The maximum brightness and luminous efficiency reach 674 cd/m^2 and 2.652 cd/A, respectively, which are 2.1 and 3.7 times higher than the conventional device, respectively. The superior brightness and luminous efficiency over conventional single-unit devices are attributed to microcavity effect.     

Analysis of error performance on Turbo coded FDPIM

Due to variable symbol length of digital pulse interval modulation（DPIM）, it is difficult to analyze the error performances of Turbo coded DPIM. To solve this problem, a fixed-length digital pulse interval modulation（FDPIM） method is provided. The FDPIM modulation structure is introduced. The packet error rates of uncoded FDPIM are analyzed and compared with that of DPIM. Bit error rates of Turbo coded FDPIM are simulated based on three kinds of analytical models under weak turbulence channel. The results show that packet error rate of uncoded FDPIM is inferior to that of uncoded DPIM. However, FDPIM is easy to be implemented and easy to be combined, with Turbo code for soft-decision because of its fixed length. Besides, the introduction of Turbo code in this modulation can decrease the average power about 10 dBm, which means that it can improve the error performance of the system effectively.     

A method for calculating the center position of collimated light

It is a key problem to accurately calculate beam spots＇ center of measuring the warp by using a collimated laser. A new method, named double geometrical center method （DGCM）, is put forward for the first time. In this method, a plane wave perpendicularly irradiates an aperture stop, and a charge couple device （CCD） is employed to receive the diffraction-beam spots, then the geometrical centers of the fast and the second diffraction-beam spots are calculated respectively, and their mean value is regarded as the center of datum beam. In face of such adverse instances as laser intension distributing defectively, part of the image being saturated, this method can still work well. What＇s more, this method can detect whether an unacceptable error exits in the courses of image receiving, processing and calculating. The experimental results indicate the precision of this method is high.     

Cost-effective test solutions for smart card and other integrated flash applications

From its emergence in the late 1980s as a lower cost alternative to early EEPROM technologies, flash memory has evolved to higher densities and speedsand rapidly growing acceptance in mobile applications.In the process, flash memory devices have placed increased test requirements on manufacturers. Today, as flash device test grows in importance in China, manufacturers face growing pressure for reduced cost-oftest, increased throughput and greater return on investment for test equipment. At the same time, the move to integrated flash packages for contactless smart card applications adds a significant further challenge to manufacturers seeking rapid, low-cost test.     

An improved parallel thinning algorithm with two subiterations

The parallel thinning algorithm with two subiterations is improved in this paper. By analyzing the notions of connected components and passes, a conclusion is drawn that the number of passes and the number of eight-connected components are equal. Then the expression of the number of eight-connected components is obtained which replaces the old one in the algorithm. And a reserving condition is proposed by experiments, which alleviates the excess deletion where a diagonal line and a beeline intersect. The experimental results demonstrate that the thinned curve is almost located in the middle of the original curve connectivelv with single pixel width and the processing speed is high.