基于USB总线和DSP的图像采集处理系统

文章论述了基于USB总线和DSP的图像采集与处理系统的设计方案和实现方法。系统以专用视频输入处理芯片SAA7113和CPLD实现图像采集,利用USB总线的高速数据传输能力和DSP强大的数据处理能力,实现了图像的实时采集、处理和传输。     

基于TMS320C620X系列DSP的SAA7113H控制实现

介绍了视频输入处理芯片SAA7113H的功能与特点和I^2C总线的特点及时序,着重阐述了图像处理系统中一种利用TMS320C620X系列DSP的McBSP13虚拟实现I^2C总线,控制SAA7113H的硬件接口和软件实现方法。     

基于FPGA的夜视全景监控的设计

设计了一种改进的夜视摄像机,利用红外CCD采集数据,以FPGA和A/D转换芯片SAA7113为采集方案,在FPGA中设计I2C总线配置模块并对视频芯片SAA7113进行合理的配置,以及四路视频的VGA显示模块的设计,可以使处理后的视频通过一路VGA接口在本地显示器上显示。实现仅在一个夜视摄像机上,无需机械移动部件和图像拼接,就可以捕捉整个半球(180×360°空间角度)范围内的视场图像。全景视场无接缝、无畸变、无死角、无盲点。     

一种基于CPLD和POI总线的视频采集卡的设计

设计并实现了一种以CPLD为数据采集逻辑控制单元，以PCI总线为接口，采用视频专用处理芯片SAA7115来实现图像预处理的视频图像采集系统。详细讨论了CPLD的控制逻辑和图像预处理。采用CPLD实现视频图像信号采集，提高系统性能，同时具有适应性和灵活性强、设计、调试方便等优点。实验结果表明该系统实现了图像的实时采集。     

一种基于CPLD和PCI总线的视频采集卡的设计

设计并实现了一种以CPLD为数据采集逻辑控制单元,以PCI总线为接口,采用视频专用处理芯片SAA7115来实现图像预处理的视频图像采集系统。详细讨论了CPLD的控制逻辑和图像预处理。采用CPLD实现视频图像信号采集,提高系统性能,同时具有适应性和灵活性强、设计、调试方便等优点。实验结果表明该系统实现了图像的实时采集。     

嵌入式图像采集系统的硬件设计

结合足球机器人视觉系统介绍了实现嵌入式图像采集与处理系统的一些方法，设计了基于FPGA／CPLD和DSP的嵌入式图像采集与处理系统，包括CCD摄像头、SAA7111A、AL422B、EPM7128及TMS320VC5402，对系统各个组成模块间的时序电路逻辑进行了较详细的分析和方案设计．     

CPLD在DSP实时图像采集系统中的应用

以DSP TMS320C6205为核心处理器,设计了一种基于复杂可编程逻辑器件(CPLD)和DSP的实时图像采集系统.在介绍系统组成原理的基础上,重点讨论了CPLD在系统中的设计方法和工作流程,包括图像采集系统控制设计、图像传输控制设计等.系统采用SAA7113和CPLD完成了无DSP干预的图像采集与存储,通过DMA实现图像传输.实际应用表明,这种设计具有功能集成,结构实现简单,程序修改方便等优点,能得到满意的图像结果.     

用FPGA实现嵌入式视频图像信号实时采集

提出了一种基于FPGA的嵌入式视频图像信号实时采集系统,采用SAA7111A对信号进行A/D变换,并用FPGA与SDRAM实现大容量的双帧缓存.详细说明双口存储器、有限状态机的实现及隔行扫描到逐行扫描的转换、乒乓互锁工作机制等.本系统可用在安全监控、工业图像检测、机器视觉等领域.     

SAA联合CRP、hs-CRP检测在168例RA患者中的临床研究

RA患者血清中SAA联合CRP、hs-CRP检测的临床研究。统计分析武威市凉州医院2017年8月～2019年2月住院病人被临床诊断为RA患者168例,并对其实验室检查指标CRP、hs-CRP及SAA进行分组,并以健康体检人群143例作为对照组进行统计学分析。168例RA患者中CRP、hs-CRP及SAA阳性率分别为:78.57%、84.52%、94.05%,均高于对照组;CRP和hs-CRP及SAA在RA患者中阳性率特点为:SAAhs-CRPCRP;健康对照组中CRP和hs-CRP及SAA阳性率特点为:SAAhs-CRPCRP。SAA联合CRP、hs-CRP检测可对RA的诊断提供有力佐证,值得临床推广;SAA结合CRP、hs-CRP指标可大大提高RA的诊断敏感性和特异性,同时对疾病的转归、治疗及用药和疗效判断有指导意义。     

基于DM642的视频采集处理系统设计及实现

设计了一套图像采集处理系统,基于TI公司的DM642专用图像处理芯片,利用Philips公司的SAA711X/21系列芯片完成采集功能,能够将模拟视频信号有效转换为数字信号,并能对数字信号进行滤波、降噪、压缩编码。     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the     

An affordable accurate evaluation of the binding conformations predicted by molecular docking studies in bio-system

Franck-Condon factors bridge the gap between theoretical modeling and experimental observations for molecular electronic spectroscopy and electron transfer.Under the displaced harmonic oscillator approximation,multidimensional Franck-Condon factors are decomposed into a product of many one-dimensional(1D)Franck-Condon(FC)factors,and each 1D-FC factor is associated with one Huang-Rhys factor that determines the leading contribution of     

Call for Papers

<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with     

Journal of Donghua University ( English Edition) Contents of Volume 31

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