一種適應(yīng)大數(shù)據(jù)量遙感圖像的星上實(shí)時(shí)壓縮方法.pdf

1、中國科學(xué)院長春光學(xué)精密機(jī)械與物理研究所博士學(xué)位論文一種適應(yīng)大數(shù)據(jù)量遙感圖像的星上實(shí)時(shí)壓縮方法姓名：徐欣鋒申請(qǐng)學(xué)位級(jí)別：博士專業(yè)：光學(xué)工程指導(dǎo)教師：王家騏徐抒巖20060116些!幽AnInorbitRealtimeApproachofImageryCompressionBasedonLargeAmountsofRemote—sensingDataXUXinfengDirectedby：WANGJiaqi，XUShuyanABSTRACT

2、Nowadays，theEOS(EarthObservationSystem)hasbeensteppedintothefourthgenerationofhighspaceresolutionAsaresultofthedevelopmentoftheremote—sensor’Stechnologythehumanbeingnowobtainsmoreandmorelargeamountofremote—sensingdatainb

3、othobservingtheearthandexploringthedeepspaceTllissituationthenneedshigherqualityofdatacompressionon—boardAndthereisaverybigdisparityinthedomainofimagerycompressionin—orbitbetweenourcountry’Slevelandtheadvancedoneinthewor

4、ldConsequentlyitiShavingtheimportanttheorysignificanceandpracticalvaluetostudysomeallalgorithmoftmagerycompressiononsatelliteforhugeremote—sensingdataquantityandtheitsrealizingapproach乃echaracteristicofremotesensingimage

5、ryisthattheycontainlargearElountsofinformation，bigentropyvalueandhighpixelspeedTheseneedthatthetechnologyofdatacompressionCallbeabletOprovidehighrealtimecapabilityhi曲reconstructionqualityandbigcompressionrateWitllanalysi

6、zingmanykindsofdomesticandforeigncompressionmethodshavingbeenappliedonsatellitesorotherspacedevices，thisarticletakes也econcreteprojectasbackgroundworkoutanewcompressionwaywhichmainlycomprisesliftingDwT(DiscreteWaveletTran

7、sform)，quantificationofsetting—zerointerzoneandMRLE(ModifiedRunLengthEncoding)AdditionallyanelectronichardwareplatformhasbeendevelopedtoimplementthenewalgorithmTheplatform’ScoreisTMS320C6416DSPahigh—endimageprocessingchi

8、pFirst，thetheoryofwavelettransformandmultiresolutionanalysishavebeeninⅡoduced，howtouseliftingDWThasbeenstated，andsomerepresentativecodingmethodshavebeenstudiedafterthepresentationofShannoncodingtheoryTheseWOrktheoretical

9、lypreparesforthesubsequentNⅡtLESecond，acompressionalgorithm，called)①M(fèi)，hasbeendesigned，whosemaingoalistopossessgoodreal—timecapabilityThisalgorithmisgoingtouseD9／7biorthogonalwavelet，liftingscheme，threestagedecomposition，