基于JPEG標(biāo)準(zhǔn)的圖像處理及其在MCF5329上的實(shí)現(xiàn).pdf

1、電子科技大學(xué)碩士學(xué)位論文基于JPEG標(biāo)準(zhǔn)的圖像處理及其在MCF5329上的實(shí)現(xiàn)姓名：周鵬斌申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：信息與通信工程指導(dǎo)教師：林水生20080601AbstractAbstract1medirectionofthepaperiStherealizationofJPEGcoderanddecodertechnologyunderDSE、礬ththerapiddevelopmentofnetworkandembeddedsyst

2、em。digitalimageshavebeenusedwidelyinmodemsocietyWiththehugesizeoftheimagetheimagedatabaseincreasesrapidlyaccofdinglvInordertoresolvetheproblembetweenincreaselydataandmemorystoragetheimagedatamustbecompressedinstorageandt

3、ransmissionTheJPEGcompressionstandardiSmostpopularinthefieldofdigitalimageprocessingbeauseofthegoodqualityofJPEGDigitalsignalprocessor(DSP)ismoresuitablefordigitalsignalprocessingthangeneralCPUThustherewillbeofgreatbenef

4、ittoemployDSPtealtimeimagecoderanddecoderInthedissertation，theprincipleofimagecoding，theJPEGsystemandtherealtimesignalprocessingsystembasedonDSPareintroducedfirstThenthedesignofaJPEGrealtimeimagecoderanddecodersystembase

5、donFreescaleColdFireMCF5329isdiscussedThecodersystemismainlyconsistofcolorspacetransformation，downsamplingDCTtransform，quantizationandhuffmancoderCombiningtheprinciplesofpipeliningandparallelismofDSPwithDCTtheoryweconcen

6、trateontheuseofEhancedMultiplyAccumulateUnitofMCF5329bymergingtheoperationsofadditionandmultiplicationandrealize8x8twodimensionsofDCTwithonedimensionofDCT、emcientlyTestsshowthatthesoftwaremeetstherequirementofrealtimecod

7、erAccordinglytheJPEGdecoderiSmainlyconsistofhuffmandecoderdequantization，lDCTtransform，upsamplingandcolorspacetransfoiinationWerealizethefastIDCTalgorithmefficientlyandoptimizesomekcvmodulesTestsshowthatthesoftwaremeetst