简介:WorkhasbeendonewithextendingtheusefulimaginganddetectionrageofCCD.ThiswasaccomplishedthroughdirectopticalcouplingandbondingofimageintensifierstotheCCD.IthasbeenshownthattheusefulrangeofaCCDmaybeextendedtwoordersofmagnitudeusingthesetechniquesincouplingamicrochannelplateimageintensifiertotheCCDarray.AlloftheseworksweredonewithpresentlyavailableCCDmadebyChina
简介:InordertoevaluatetheimagingqualityofCCDcamerasfullyandrapidly,theminimumresolvablecontrast(MRC)ispresentedinthispaperandthesystemofmeasuringMRCisconstructedaswell,inwhichtwointegratingspheresareproposedtoilluminatetwosidesofthetargetrespectively.Thevariablecontrastcanbeobtainedbyregulatingtheluminanceofintegratingspheres.Experimentalresultsindicatethattheerrorofmeasuringluminanceiswithin±0.3cd/m2,MRCriseswiththeincreaseofthespatialfrequency.TheexperimentalresultsshowthatthemethodproposedisaneffectiveapproachtoevaluatetheimagingqualityofCCDcameras.
简介:Anew128×128elementPtSiSchottkybarrierinfraredimagesen-sorwithITCCDreadortstructureandPtSithinfilmopticalcavitydetectorstruc-turehasbeenfabricated,whichhas50цm×50цmpixels,afillfactorof40per-cent,thenonuniformityof5%orlessandthedynamicrangeofoverorequalto50dB.Thenoiseequivalenttemperaturedifferenceis0.2Kwithf/1.0opticsat300Kbackground.Inthispaper,theprincipleofoperation,designconsiderationandfabric-cationtechnologyforthedevicearedescribed.
简介:Duringthelastdecade,spatio-temporaldatabaseshavebecomeincreasinglyimportantinmanyapplicationssuchasgeographicinformationsystems(GIS)andengineeringinformationsystems.Thispaperdiscussesthedesignandimplementationofageocomputingplatformforthedevelopmentoflocation-basedservices(LBS)focusingonmobilemapping.Duringtheanalysis,design,andimplementationofthegeocomputingplatform,aneffectivemethodisproposedforthereal-timeprocessingofgeographicinformationacquiredbyacameraattachedtoapersonaldigitalassistant(PDA).Thismethodcombineslocationinformationgivenbytheglobalpositionsystem(GPS)withman’sabilitytorecognizethelocationofobjectsandtheirgeographicalrelationshiptoimproveobjectmapping.
简介:Usingcomputer-controlledliquidcrystaldisplay(LCD)asanimageprocessorandaCCDcameraasadetector,phase-onlycorrelationmeasurementisperformedwiththeaidofjointtransformcorrelationmethod(JTC).Thiscomputer-controlledLCD-CCDimageprocessingsystemmaybeapowerfultoolfordefectdetection,positioncontrolandpatternrecognition.Itenablesnewpossibilitiesinanalogreal-timeimageprocessing.Thisisofgreatinterestinmicroelectronicmanufacturingtodayandinthefuture.
简介:因为紫外可见的吸收度察觉者不能避免的一般多波长源于光的紧张变化的噪音和飘移采购原料,双横梁多波长紫外可见的察觉者基于电荷耦合器件被设计。在它通过chopper以后,轻来源的光线被横梁splitter划分成一条信号光线和一条引用光线。信号光线照耀进样品房间。通过样品房间的信号光线失败到集中它到被一个凹面栅栏在电荷耦合器件的一部分上想象的槽上的一面凹面镜子上。参考光线被凹面栅栏在槽以后在电荷耦合器件的另外的部分上想象。信号光谱,引用光谱和电荷耦合器件的黑暗水流能在光系统的合作下面在一样的电荷耦合器件上被测量并且补助电路。为由使用参考光谱和电荷耦合器件的黑暗水流的信号光谱的即时赔偿能有效地压抑察觉者的噪音和飘移。短期的噪音是10?5AU和飘移是10?4AU/h。CLC数字TN366文件代码A
简介:AmeasurementsystemwiththeCCDmatrixandcomputersystemisdesignedtotestthe2Dsizeofanyshapeworkpiecesautomatically.Inaddition,thesystemadoptsthemethodoftherelativemeasurementwhichincreasestheprecisionandthevelocity.Moreimportantly,theprecisioncan'tbechangedwiththeconditionsofthetemperatureandairpressure.Theexperimentsshowthattherelativeprecisionof0.0029andtheabsoluteprecisionof2.97μmareobtained.Theinstrumentmaybeusedintheproductlineandmakethetestingonlinepossible.
简介:摘要在融媒体时代下县级电视台的发展逐步受到限制,因此县级电视台的电视栏目必须经过改革创新才可以提高行业竞争力,在新的媒体时代下持续发展。在全社会不断地信息化的进程下,现代化的传媒技术应用越来越广泛,县级电视台的电视栏目必须融入融媒体环境中,综合实际发展的情况进行改革与创新,促进县级电视台电视栏目的良好发展1。县级电视台的优势在于有地方的特色文化和当地的民生信息作为特点,有效的挖掘本地文化内容,结合信息时代的新媒体技术,提升县级电视台的电视栏目竞争力,提高收视率,促进县级电视台在融媒体环境下健康的发展。