電子信息工程專業(yè)英語教程（第5版） 課件 Lesson 23 Digital Cameras

Unit8Image&VideoLesson23DigitalCamera《電子信息工程專業(yè)英語教程（第5版）》Lesson23DigitalCameraBackgroundsTexttour

LanguageinuseVocabularyStructureReading/writingtechniques2024/5/292《電子信息工程專業(yè)英語教程（第5版）》TerminologyAlkaline 堿性的Resolution

清晰度，分辨力Beamsplitter

分光鏡，分色鏡Photography

攝影，攝影術(shù)Backgrounds2024/5/293《電子信息工程專業(yè)英語教程（第5版）》TerminologyTIFF:TaggedImageFileFormat

標(biāo)簽圖像文件格式JPEG:JointPhotographicExpertsGroup

聯(lián)合圖像專家組LCD:LiquidCrystalDisplay

液晶顯示器CCD:ChargeCoupledDevice

電荷耦合器件Backgrounds2024/5/294《電子信息工程專業(yè)英語教程（第5版）》TerminologyLens 透鏡，鏡頭Film 薄膜，膠卷，影片F(xiàn)ocus 焦點Backgrounds2024/5/295《電子信息工程專業(yè)英語教程（第5版）》TexttourOutlineIntroductionImageSensorsResolutionFileformatsTipsforpurchasingdigitalcameras2024/5/296《電子信息工程專業(yè)英語教程（第5版）》IntroductionAdigitalcamerahasaseriesoflensesthatfocuslighttocreateanimageofascene.itfocuseslightontoasemiconductordevicethatrecordslightelectronicallyAmicroprocessorthenbreaksthiselectronicinformationdownintodigitaldata.2024/5/297《電子信息工程專業(yè)英語教程（第5版）》ImageSensorsCCD(ChargeCoupledDevice)SensorsCMOS(ComplementaryMetalOxideSemiconductor)SensorsACCDSensor

2024/5/298《電子信息工程專業(yè)英語教程（第5版）》ImageSensorsDifferencesbetweenCCDandCMOSsensors:CCDsensorscreatehigh-quality,low-noiseimages.CMOSsensorsaremoresusceptibletonoise.CMOSsensorsconsumelittlepower.CCDsconsumeasmuchas100timesmorepowerthananequivalentCMOSsensor.2024/5/299《電子信息工程專業(yè)英語教程（第5版）》ImageSensorsDifferencesbetweenCCDandCMOSsensors:CMOSchipscanbefabricatedonjustaboutanystandardsiliconproductionline,sotheytendtobeextremelyinexpensivecomparedtoCCDsensors.CCDsensorshavebeenmassproducedforalongerperiodoftime,sotheyaremoremature.2024/5/2910《電子信息工程專業(yè)英語教程（第5版）》ResolutionSometypicalresolutionsinclude:640

480pixels:lowendonmost"real"camerasgreatifyouplantoe-mailpictures307,000totalpixels2024/5/2911《電子信息工程專業(yè)英語教程（第5版）》ResolutionSometypicalresolutionsinclude:1216

912pixels:agoodresolutionforprintingimages1,109,000totalpixel1600

1200pixels:

highresolutionalmost2milliontotalpixels2024/5/2912《電子信息工程專業(yè)英語教程（第5版）》ResolutionPrintSizeMegapixelsImageResolutionWallet0.3640x480pixels4x5inches0.4768x512pixels5x7inches0.81152x768pixels8x10inches1.61536x1024pixels2024/5/2913《電子信息工程專業(yè)英語教程（第5版）》FileformatsTwomainfileformatsusedbydigitalcamerasTIFF,anuncompressedformatJPEG,acompressedformat2024/5/2914《電子信息工程專業(yè)英語教程（第5版）》FileformatsImageSizeTIFF(uncompressed)JPEG(highquality)JPEG(mediumquality)640x4801.0MB300KB90KB800x6001.5MB500KB130KB1024x7682.5MB800KB200KB1600x12006.0MB1.7MB420KB2024/5/2915《電子信息工程專業(yè)英語教程（第5版）》TipsforpurchasingdigitalcamerasMakesurethecamerahastherightresolutionforyourneeds.MakesurethecamerahasenoughmemoryMakesurethe

lens

willhandlethepicturesyouplantotake.Donotconfusedigitalzoomwithopticalzoom.Donotconfuseactualresolutionwithinterpolatedresolution.Seehowlongthebatterieswilllast.2024/5/2916《電子信息工程專業(yè)英語教程（第5版）》Makesurethecamerahastherightresolutionforyourneeds.

Ifyouaregoingtotakesnapshotsande-mailthemtofriends,thenyoudon'tneedanythingmorethan640x480pixelresolution.Buyingtheresolutionthatyouneedletsyousavemoney(andharddiskspace).Tipsforpurchasingdigitalcameras2024/5/2917《電子信息工程專業(yè)英語教程（第5版）》Make

surethecamerahasenoughmemory.

Thereisnothingmorefrustratingthat"runningoutoffilm"whenthereisagreatpicturesittinginyourviewfinder!The"film"foradigitalcameraisFlashmemorycard.Tipsforpurchasingdigitalcameras2024/5/2918《電子信息工程專業(yè)英語教程（第5版）》Makesurethelenswillhandlethepicturesyouplantotake.

Ifyoudon'thavetherightlens,itcanbehardtotakethebestpictures.Forexample,ifverycrispdetailisimportantinyourpictures,you'llprobablywantahighopticalzoomnumber.Besuretotryoutthelenssystemonacamerabeforeyoupurchaseit.Digitalcamerascomewithahugevarietyoflenses,sobesuretoshoparound.Tipsforpurchasingdigitalcameras2024/5/2919《電子信息工程專業(yè)英語教程（第5版）》Donotconfusedigitalzoomwithopticalzoom.

Manycamerasadvertisethingslike"100Xzoom,"butthatisoftenmisleadingbecauseonlypartofitisinthelens.Theonlypartofazoomlensthatreallymattersisthe"optical"part--thepartmadeoutofglasslenses.Thisisthe"zoom"thatwillincreasethequalityoftheimage.Anyformof"digitalzoom"issomethingyoucandoyourselfoutsideofthecamera.Ifyouuseyourcamera'ssoftwaretocropoutasmallinnerportionofapictureandblowitup,youaredoingthesamethingadigitalzoomisdoing.Inmostcases,thedigitalzoomsimplymakestheimagefuzzy.Tipsforpurchasingdigitalcameras2024/5/2920《電子信息工程專業(yè)英語教程（第5版）》Donotconfuseactualresolutionwithinterpolatedresolution.

Manycamerasadvertisethattheyhave,forexample,1000x600pixelresolutionand1200x800interpolatedresolution.Likedigitalzoom,interpolatedresolutionisanillusion.Youcandothesamethingyourselfwiththecamera'ssoftware,andallitreallydoesismaketheimagelargerandslightlyfuzzy.Tipsforpurchasingdigitalcameras2024/5/2921《電子信息工程專業(yè)英語教程（第5版）》Seehowlongthebatterieswilllast.

Manydigitalcameraseatbatteriesbecausetheyhavetopoweranimagesensor,anLCD

panelandamicroprocessorallatthesametime,andsometimesthere'saflashaswell!Seehowlongthebatterieswillreallylastinyourcamera.Seeifthecamerawillacceptnormalalkalinebatteriesinapinch.Ifyouplanonusingyourcameraforlongperiodsoftime,thinkaboutpurchasinganextrabatteryforit.Tipsforpurchasingdigitalcameras2024/5/2922《電子信息工程專業(yè)英語教程（第5版）》VocabularypaneldistortionequivalentvicinityzoomfocusStructureReading/writingtechniquesLanguageinuse2024/5/2923《電子信息工程專業(yè)英語教程（第5版）》Vocabulary2024/5/2924《電子信息工程專業(yè)英語教程（第5版）》PanelindictionaryAflat,usuallyrectangularpieceformingaraised,recessed,orframedpartofthesurfaceinwhichitisset.

鑲板Aboardhavingswitchesorbuttonstocontrolanelectricdevice.

配電盤，控電板Aninstrumentpanel.

儀器盤Asectionofatelephoneswitchboard.

電話總機板2024/5/2925《電子信息工程專業(yè)英語教程（第5版）》PanelindictionaryThosepersonsselectedfromthislisttocomposeajury.

陪審員Ajury.

陪審團Agroupofpeoplegatheredtoplanordiscussanissue,judgeacontest,oractasateamonaradioortelevisionquizprogram.

專門小組2024/5/2926《電子信息工程專業(yè)英語教程（第5版）》PanelintextManydigitalcameraseatbatteriesbecausetheyhavetopoweranimagesensor,anLCD

panel

andamicroprocessorallatthesametime,andsometimesthere'saflashaswell!

許多數(shù)碼相機很費電，這是因為它們必須為圖像傳感器、液晶顯示屏和微處理器同時供電，有時還可能有一個閃光燈！

2024/5/2927《電子信息工程專業(yè)英語教程（第5版）》Panelinuse

acousticpanel隔音板;吸音板advisorypanel顧問團aircraftinstrumentpanel飛機儀表板cabinetpanel配電盤2024/5/2928《電子信息工程專業(yè)英語教程（第5版）》Panelinuse

cameracontrolpanel攝象機控制板consumerpanel消費者反映研究小組expertpanel專家小組2024/5/2929《電子信息工程專業(yè)英語教程（第5版）》DistortionindictionaryTheactoraninstanceofdistorting.扭曲，變形Theconditionofbeingdistorted.被歪曲的狀態(tài)Astatementthattwistsfact;amisrepresentation.歪曲，曲解Achangeintheshapeofanimageresultingfromimperfectionsinanopticalsystem,suchasalens.畸變Anundesiredchangeinthewaveformofasignal.信號失真Aconsequenceofsuchachange,especiallyalackoffidelityinreceptionorreproduction.信號失真2024/5/2930《電子信息工程專業(yè)英語教程（第5版）》DistortionindictionaryTheunwantedchangeinwaveformthatoccursbetweentwopointsinatrans-missionsystem.Thesixmajorformsofdistortionare:bias,characteristic,delay,end,fortuitous(“jitter”),andharmonic.Changecausedbytransientswhich,asaresultofthemodulation,arepresentinthetransmissionchannelanddependonitstransmissionqualities.2024/5/2931《電子信息工程專業(yè)英語教程（第5版）》DistortionintextCCDsuseaspecialmanufacturingprocesstocreatetheabilitytotransportchargeacrossthechipwithoutdistortion.Thisprocessleadstoveryhigh-qualitysensorsintermsoffidelityandlightsensitivity.CCD器件用一種特殊制造工藝無畸變地將電荷傳送出去。這種工藝使CCD器件在保真度和光敏性方面的質(zhì)量非常好。

2024/5/2932《電子信息工程專業(yè)英語教程（第5版）》Distortioninuse

aliasingdistortion混疊失真anisotropicdistortion各向異性失真aperturedistortion孔徑失真clippingdistortion削波失真2024/5/2933《電子信息工程專業(yè)英語教程（第5版）》Distortioninuse

frequencyresponsedistortion頻率響應(yīng)失真frequency-modulationdistortion調(diào)頻失真geometricdistortion幾何畸變halftonedistortion半調(diào)失真2024/5/2934《電子信息工程專業(yè)英語教程（第5版）》Distortioninuse

inherentdistortion固有失真lineardistortion線性失真totalharmonicdistortion總諧波失真2024/5/2935《電子信息工程專業(yè)英語教程（第5版）》EquivalentindictionaryEqual,asinvalue,force,ormeaning.相等的Havingsimilaroridenticaleffects.等效的Beingessentiallyequal,allthingsconsidered相當(dāng)?shù)腃apableofbeingputintoaone-to-onerelationship.Usedoftwosets.等價的，等積的Havingvirtuallyidenticalorcorrespondingparts.相等的Havingthesameabilitytocombine.等價的、當(dāng)量的2024/5/2936《電子信息工程專業(yè)英語教程（第5版）》EquivalentindictionarySomethingthatisessentiallyequaltoanother:

對等物Equivalentweight.

當(dāng)量2024/5/2937《電子信息工程專業(yè)英語教程（第5版）》EquivalentintextCMOSsensorstraditionallyconsumelittlepower.CCDs,ontheotherhand,consumeasmuchas100timesmorepowerthananequivalentCMOSsensorCMOS傳感器的功耗通常很低；而和同等CMOS傳感器相比，CCD傳感器的功耗要高100倍。

2024/5/2938《電子信息工程專業(yè)英語教程（第5版）》Equivalentinuse

attenuationequivalent等效衰減foodequivalent食物代用品Frenchequivalents法文同義語gramequivalent克當(dāng)量2024/5/2939《電子信息工程專業(yè)英語教程（第5版）》Equivalentinuse

grammaticalequivalents語法同等成分groundemitterequivalentcircuit發(fā)射極接地等效電路infinitesimalequivalent無窮小等價2024/5/2940《電子信息工程專業(yè)英語教程（第5版）》VicinityindictionaryThestateofbeingnearinspaceorrelationship;proximity

附近，鄰近tworestaurantsinclosevicinity.Anearby,surrounding,oradjoiningregion;aneighborhood

附近地區(qū)；鄰居Anapproximatedegreeoramount

近似程度或者數(shù)量housespricedinthevicinityof$200,000.2024/5/2941《電子信息工程專業(yè)英語教程（第5版）》VicinityintextBybreakingupthesensorintoavarietyofred,blueandgreenpixels,itispossibletogetenoughinformationinthegeneral

vicinityofeachsensortomakeveryaccurateguessesaboutthetruecoloratthatlocation將傳感器分為紅、藍、綠三組；這樣，就可以從傳感器的鄰域獲取足夠信息，對該處的真實色彩做出準(zhǔn)確估計。

2024/5/2942《電子信息工程專業(yè)英語教程（第5版）》Vicinityinuse

inthevicinityof在...附近大約;在...左右2024/5/2943《電子信息工程專業(yè)英語教程（第5版）》ZoomindictionaryTomakeacontinuouslow-pitchedbuzzingorhummingsound.

嗡嗡作響Tomovewhilemakingsuchasound.

嗡嗡地移動Toclimbsuddenlyandsharply.Usedofanairplane.

陡升Tomoveaboutrapidly;swoop.

快速移動；猛撲2024/5/2944《電子信息工程專業(yè)英語教程（第5版）》ZoomindictionaryTomoveacameralensrapidlytowardorawayfromasubject.

攝影機迅速接近或離開被攝對象Tosimulatesuchamovement,asbymeansofazoomlens.

用變焦鏡頭推近或拉遠Incomputergraphics,tochangethesizeofallorpartoftheelementsofadisplay;unlessotherwiseindicated,enlargementisassumed.

放大2024/5/2945《電子信息工程專業(yè)英語教程（第5版）》ZoomintextTheonlypartofazoomlensthatreallymattersisthe"optical"part-thepartmadeoutofglasslenses.Thisisthe"zoom"thatwillincreasethequalityoftheimage.Anyformof"digitalzoom"issomethingyoucandoyourselfoutsideofthecamera.變焦鏡頭唯一重要的部分是在“光學(xué)”部分——由“玻璃鏡頭”組成的那部分。這才是提高圖像質(zhì)量的“變焦”。而任何形式的“數(shù)字變焦”都可以在相機外完成。

2024/5/2946《電子信息工程專業(yè)英語教程（第5版）》Zoominuse

zoomin 移近目標(biāo)zoomout