Rate-distortion weighted SPIHT algorithm for interferometer data processing

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    摘要 Asoneofthenextgenerationimagingspectrometers,theinterferentialspectrometer(IS)possessestheadvantagesofhighthroughput,multi-channelandgreatresolution.ThedataofISareproducedinthespatialdomain,butopticalapplicationsareintheFourierdomain.TraditionalcompressionmethodscanonlyprotectthevisualqualityofinterferometerdatainthespatialdomainbutignorethedistortionintheFourierdomain.TherelationbetweenthedistortionintheFourierdomainandthecompressioninthespatialdomainisanalyzed.Bymathematicalproofandvalidationwithexperiments,therelationbetweenspatialandFourierdomainsisdiscovered,andthesignificanceintheFourierdomainismoreimportantasopticalpathdifference(OPD)increasinginthespatialdomain.Basedonthisrelation,anovelcodingschemeisproposed,whichcancompressdatainthespatialdomainwhilereducingthedistortionintheFourierdomain.Inthisscheme,thebitstreamofthesetpartitioninginhierarchicaltrees(SPIHT)istruncatedbyadaptivelyliftingrate-distortionslopesaccordingtotheprioritiesofOPDbasedonrate-distortionoptimizationtheory.ExperimentalresultsshowthattheproposedmethodcanprovidebetterprotectionofspectrumcurvesintheFourierdomainwhilemaintainingacomparablevisualqualityinthespatialdomain.
    机构地区 不详
    出版日期 2011年04月14日(中国Betway体育网页登陆平台首次上网日期,不代表论文的发表时间)
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