Duetotherapiddevelopmentofinformationtechnology,distanceeducationisinacomputernetworkandmultimediatechnology-basedstageofthethirdgenerationofdistanceeducation,thatis,networkeducation.
Educationalpracticeinthenetwork,astheimageinformationwithvisualimages,suchaseasilyunderstoodandinformativefeatures,andthereforethepracticeofdistanceeducationhasbeenthemostwidelyusedandundoubtedlyplaysadecisiverole.Althoughtheimageinformationhasalotofadvantages,buttherearealsopotentialproblemsthatcannotbeevaded,oneofthemainproblemsisthattoolargeamountofdata.Largeamountofdatawillgivetheimageinformationstoragememory,communicationsbandwidthchanneltrunk,aswellasgreatlyincreasecomputerprocessingspeedofthepressureonthepracticeofdistanceeducationisalsoofgreatimpactwillbecausedbycommunicationcongestion,networkdelay,imagesarenotsynchronizedvoiceproblems.Therefore,theneedtomaintaintheoriginalimageinformationcontainedinthebasisofthenatureofcommunicationsandtheneedtostorecompresseddata.Theuseofimagecompression,imagecanreducetheburdenofstorageandtransmission,sothattheimageonthenetworkforrapidtransmissionandreal-timeprocessing.
Oftheimagecompressioncodingalotofinternationalstandards,basedonthediscretewavelettransform-basedmulti-resolutionJPEG2000encodingisthestaticimagecompressionratioofthehighestimagequality,buttherearealsodeficiencies,mainlyinalongtimecodec,Reconstructionoftheimageedgeburr,suchasnon-smooth.JPEG2000compressionalgorithminthisarticletoapreliminarystudycarriedoutandtrytoimproveit.