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1、Background:1.Digitalimageprocessingtechnologyoriginatedinthe1920s,whenthroughsubmarinecablestransferredfromLondontoNewYork,aphoto,whichusesdigitalcompressiontechnology.Lookatthetechnicallevelin1920,ifyoudonotcompress,transferanimagetooneweekaftercompre
2、ssiononlyneed3hours.TheJetPropulsionLaboratoryoftheUnitedStatesin1964todealwiththespacecraft"VoyagerVIIsentbackphotosofthemoon,whichmarksthethirdgenerationofcomputersaftertheadventofdigitalimageprocessingconceptbegantobeapplied.Subsequently,therapiddev
3、elopmentofdigitalimageprocessingtechnology,hasbecometheengineering,learningbetweenthevariousdisciplinesinthefieldofcomputerscience,informationscience,statistics,physics,chemistry,biology,medicineandevensocialsciencesandtheobjectofthestudy.2.Themainmedi
4、umofhumantransmissionofinformationisthevoiceandimage.Accordingtostatistics,intheacceptedhumanauditoryinformationaccountedfor20%,accountingfor60%ofthevisualinformation,suchastaste,touch,smell,thetotaladdsup,butaccountedfor20%.So,asthemediaandothermeanso
5、frelayinginformation-theimageinformationisveryimportant,asthesayinggoes:"apictureisworthathousandwords,"ataglance",reflectstheimageinthetransmissionofinformationisunique.Oneoftheearliestapplicationsofdigitalimageprocessingisthenewspaperindustry,atthatt
6、ime,theimageforthefirsttimeviasubmarinecablesfromtheLondontoNewYork.Otherapplicationsareasfollows:Thetelegraphprinterusingspecialcharactersintheencodedtapedigitalimagein1921,1922inthesignalacrosstheAtlantictwice,thedigitalimagefromthepunchedtape,youcan
7、seethatsomeoftheerrors,To15shadesequipmentwithoutmodificationthroughcablesentGeneralsPershingandFochphotosfromLondontoNewYorkin1929,U.S.spacecraftsentthefirstmoonphotos,"TravelerVIIsatelliteaffectlightimagestaken17minutesbeforethelunarsurfaceat9:09onJu
8、ly31st,1964(Easterndaylighttime).Significance1.ImageisanimportantsourceofpeopletoobtaininformationfromtheobjectiveworldHumantoobtaininformationfromtheobjectiveworldthroughthesenseorgans,throughtheears,eyes,mouth,nose,hand,bylistening,wa
