简介：Inthispaper,aphotoelectricdeviceisintroduced,whichisusedinde-tectingthequalityoninternalsurfaceofthinandlongsteelpipe.Inthisdevice,theCCTVlensisusedforextracttheflawinformationoninternalsurfaceofthepipe,andmakeIBM-PC/AT486computerascontrollingandimageprocessingsystem.Bythisinstrument,thefunctions,suchasthedigitalconversiongofinputinformation,imageprocessing,classificationofrecognitionandoutputdisplaycanbeobtained,Inthepetroleumandchemicalindustry,byusingthisapparatus,wecandetectthequalithoninternalsurfaceofvariousmetalpipeswithreal-timeautomatically.

简介：ThispaperdescribesafullchannelTVmodulatorforallTVsystems,whichhasbeendevelopedsuccessfully.ItemploysadvancedtechniquesuchasPLLfrequencysynthesizerwithmicrowaveintegratedcircuit,andwidebandmicrostripVCOanddigital-analogcombinedintegratedcircuits.Thekeytechniqueofthemodulatorissettledsuccessfully.AllthespecificationsofthemodulatoragreewithTechnicalStandardofChina,whicharetestedbytheauthorityofChina.

简介：ThepurecubicGaN(c-GaN)hasbeengrownon(001)GaAssubstratesbyECR-PAMOCVDtechniqueatlowtemperatureusingTMGaandhighpureN2asGaandNsources,respectively.TheeffectsofsubstratepretreatmentconditionsonqualityofcubicGaNepilayerareinvestigatedbythemeasurementsofTEMandXRD.Itisfoundthathydrogenplasmacleaning,nitridationandbufferlayergrowthareveryimportantforqualityofcubicGaNepilayer.

简介：InordertoevaluatetheimagingqualityofCCDcamerasfullyandrapidly,theminimumresolvablecontrast(MRC)ispresentedinthispaperandthesystemofmeasuringMRCisconstructedaswell,inwhichtwointegratingspheresareproposedtoilluminatetwosidesofthetargetrespectively.Thevariablecontrastcanbeobtainedbyregulatingtheluminanceofintegratingspheres.Experimentalresultsindicatethattheerrorofmeasuringluminanceiswithin±0.3cd/m2,MRCriseswiththeincreaseofthespatialfrequency.TheexperimentalresultsshowthatthemethodproposedisaneffectiveapproachtoevaluatetheimagingqualityofCCDcameras.

简介：MostofImageQualityAssessment(IQA)metricsconsistoftwoprocesses.Inthefirstprocess,qualitymapofimageismeasuredlocally.Inthesecondprocess,thelastqualityscoreisconvertedfromthequalitymapbyusingthepoolingstrategy.Thefirstprocesshadbeenmadeeffectiveandsignificantprogresses,whilethesecondprocesswasalwaysdoneinsimpleways.Inthesecondprocessofthepoolingstrategy,theoptimalperceptualpoolingweightsshouldbedeterminedandcomputedaccordingtoHumanVisualSystem(HVS).Thus,areliablespatialpoolingmathematicalmodelbasedonHVSisanimportantissueworthyofstudy.Inthispaper,anewVisualPerceptualPoolingStrategy(VPPS)forIQAispresentedbasedoncontrastsensitivityandluminancesensitivityofHVS.ExperimentalresultswiththeLIVEdatabaseshowthatthevisualperceptualweights,obtainedbytheproposedpoolingstrategy,caneffectivelyandsignificantlyimprovetheperformancesoftheIQAmetricswithMeanStructuralSIMilarity(MSSIM)orPhaseQuantizationCode(PQC).ItisconfirmedthattheproposedVPPSdemonstratespromisingresultsforimprovingtheperformancesofexistingIQAmetrics.

简介：Thebettercompressionratecanbeachievedbythetraditionalvectorquantization(VQ)method,andthequalityoftherecoveredimagecanalsobeaccepted.Butthedecompressedimagequalitycannotbepromotedefficiently,sohowtobalancetheimagecompressionrateandimagerecoveringqualityisanimportantissue.Inthispaper,animageistransformedbydiscretewavelettransform(DWT)togenerateitsDWTtransformedimagewhichcanbecompressedbytheVQmethodfurther.Besides,wecomputethevaluesbetweentheDWTtransformedimageanddecompressedDWTtransformedimageasthedifferencematrixwhichistheadjustablebasisofthedecompressedimagequality.Bycontrollingthedeviationofthedifferencematrix,therecanbenearlylosslesscompressionfortheVQmethod.ExperimentalresultsshowthatwhenthenumberofcompressedbitsbyourmethodisequaltothenumberofthosebitscompressedbytheVQmethod,thequalityofourrecoveredimageisbetter.Moreover,theproposedmethodhasmorecompressioncapabilitycomparingwiththeVQscheme.

简介：数据包缓冲能在双循环被实现通过在控制信号和数据包之间的跨阶段的调整(XPM)的光缓冲区(DLOB)。然而，双波长信号的产量平等将由于失衡的获得和阶段移动降级。这个问题能被力量均等用SOA的浸透特征解决。有2.5Gb/s的数据包能为相应于产量包的16.5μs.The扑灭比率的16个周期在DLOB被缓冲当S/N是8.1dB时，是8dB。

简介：啁啾的纤维布拉格栅栏在光通讯和读出系统发现了许多应用。高质量与2的思考带宽基于啁啾的纤维布拉格栅栏过滤。6和32nm和高反射率与长阶段分别地掩盖的第2a4厘米试验性地被表明。与扁平的思考乐队和高反射率一起的这些过滤器被给类型ⅡA写啁啾的布拉格栅栏完成。

简介：这份报纸建议调节叉回转仪(M-TFG)到decouple的micromachined的一个改进图案在更好并且到增加分辨率驾驶并且察觉到指示之间的生气谈话。由采用双褶层的春天暂停，开车模式和感觉模式是机械地decoupled。通过双褶层的春天暂停和开车梳子的地点的小心的布局设计，机械联合效果被从察觉孤立讨厌的刺激进一步减少。优秀因素调查证明那个高质量的因素能被使用这结构达到，它能引进精确分辨率。作为结果，这个图案有潜力为起始的水平应用程序完成低偏爱飘移和精确分辨率。

简介：用自发在变换，数技术的极化柱子选择和巧合下面参量，极化Einstein-Podolsky-Rosen(EPR)纠缠了状态被准备。有不同的泵激光紧张的效率，对比和忠实上的试验性的研究系统地被执行。结果证明泵激光紧张清楚地影响纠缠的光子，特别对比和忠实的质量。在另一方面，纠缠的光子的泵效率是几乎不变的，也就是，纠缠的来源亮度随泵激光力量的增加线性地增加。

简介：Monodispersed硅石有353nm的直径的微范围是在乙醇的装配intophotonic水晶在借助于可控制的垂直免职方法的不同温度和湿度的改变的硅石体积部分的胶体的暂停。表面形态学和光性质被SEM和UV-Vis-NIR学习。这被发现high-qualitysilica胶体的photonic晶体与在45℃和55℃之间的环境温度从乙醇答案被获得，在66%和76%之间的湿度，微范围的体积部分是between0.8%并且1.5%。可控制的垂直免职方法制作的订的拥挤不堪的photonic水晶在可见轻乐队和近红外线的乐队有二photonic乐队差距。