基于DSP的图像采集与感兴趣区域编码的研究与实现

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1、湖南大学硕士学位论文基于DSP的图像采集与感兴趣区域编码的研究与实现姓名：闫旭申请学位级别：硕士专业：电子科学与技术指导教师：黎福海20090422硕十学位论文AbstractInrecentyears，withtheextensiveapplicationofembeddedimageacquistion，suchasimagemonitor，medicalequipment，industrialautomation，intelligenttraffic，etc，therequirementofimagequalityhasbeenincreasedgreatly．Thevastam

2、ountofimagedataraisesmorerequirementandchallengestotheimageacquisitionandprocessingtechnology．Thethesisfocusesontheanalysisofthisissuewhichistheconflictbetweenimagecompressionefficiencyandimagequalityafterreconstruction．Todealwiththeimagesintheregionofinterestandbackgroundregionwithdifferentstra

3、tegyistoachievehighcompressionand，meanwhile，toensurethattheimagequalityofimagequalityafterreconstruction．It’Sagoodsolutiontothecontradictionandagoodreferencefortherelatedapplicationsandresearch．Firstly，thisthesisintroducesthestatusofthesubjectatchinaandabroad．Thenitanalyzesandcomparestheirdevelo

4、pmentandaccomplishment．Furthermore，itcarriesoutadetailedanalysisofthetargetsystemwhichincludesthreemaincharacteristics．Thenthroughthecomparisonofcommonfeaturesofdifferentdigitalsignalprocessor，itchoosestheBlackfinDSPprocessingsystemasthecoreframework．Basedonthesystemrequirements，itdesignstheover

5、allhardwareplatformarchitectureandthetransplantationoflxCLinuxembeddedsoftwareoperatingsystem．Throughtheanalysisofspecificcharacteristicsofdifferenttypesofimagesensors，theOV9650CMOSimagesensorisselected．CombinedthecharacteristicsofBF533DSP，thesisdesignstheinterfacebetweenthem，andcompletesthespec

6、ificconfigurationofimagesensor．Moreover，inaccordancewiththeuniquePPIstructureofBlackfin，itachievesthedesignofrapidimagetransmission．Finally，alltheoperationsaretransplantedtothemoduledriverinembeddedoperatingsystemplatform．Besides，itsummarizesandanalysesaboutavarietyofedgedetectionandsegmentation

7、algorithms，whichmainlyincludetheedge—basedoperatorandthewavelettransform—basedoperator．Then，dependsontheactualdemandofthesystem，itdesignedthealgorithmthatutilizestheSUSANoperatorforimagesegmentationandthenproceedtotheedgetra