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1、北京交通大學(xué)碩士學(xué)位論文快速分形圖像編碼算法的研究姓名：劉美琴申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：信號(hào)與信息處理指導(dǎo)教師：趙耀20061201ABSTRACTFIChasattractedtheattentionofmanynativeorabroadresearcherssinceItwasintroducedintothefieldofimagecoding,duetoitsadvantages，suchashilghcompressionperformance,simpleandfastdecodin
2、gprocess，novelencodinganddecodingtheoryandresolutionindependence．Themainconsumingtimeistheprocessoffindingthebestmatcheddomainblockinalargedomainpoolfuragivenrangeblock,computingandquantizingtheparametersandtheprocessofimagepartition．Thisdissertation
3、beginswiththedevelopment，advantagesanddisadvantagesoffractalimagecoding,andthenintroducessomeimprovedFICalgorithms．Themaincontributionsoftllisdissertationareasfuliows：①Accordingtotherelationshipbetweenthevariancesofrangeblocksanddomainblocks,aalgorit
4、hmisproposedtoimproveFisher’sscheme．ExperimentresultsshowthattheproposedalgorithmneedslessencodingtimeandhavealmostthesamedecodedimagequalityasFisher’s．②AfastfractalimagecodingalgorithmbasedonFGSEisproposedinthisdissertation．It鋤speeduptheencodingproc
5、essandkc印thesamedecodedimagequality．Nowadays,mostimprovedfractalimagecodingalgorithmsareinthecostofthedecreaseofthedecodedimage．AfastoptimalblockmatchinginmotionestimationnamedFGSEisfeaturedbyprovidingasequenceoffinegrainedboundarylevelsinanaimtoreje
6、ctacheckingcandidateasearlyaspossible．ALemmawasintroducedtodescribetherelationshipbetweenFICandFGSE．AndthenFGSEcanbeusedinthesearchprocessforthematchedblocksinFIC．③Amultipledescriptionscodingalgorithmbasedonfractalimagecodingisproposedinsectionfive。M
7、ultipledescriptionscoding(MDC)hasemergedasanattractiveframeworkforrobusttransmissionoverunreliablechannels．Inthisthesis,FICisintroducedintoMDCaftertransformingtheparameters．Meanwhile，thefastfractalimagecodingalgorithmbasedonFGSEintroducedaboveisalsou
8、sedinthealgorithmtospeeduptheimagecodingfurther．KEYWORDS：FIC，Variance，F(xiàn)GSE，Lemma,MDC，MDLVQ，MDSQCLASSNo：致謝本論文的工作是在我尊敬的導(dǎo)師趙耀教授的悉心指導(dǎo)下完成的，從開始選題到最后的論文完成，無(wú)不傾注著導(dǎo)師的大量心血。當(dāng)科研工作陷入困境時(shí)，趙耀教授總是給予我啟迪和幫助，當(dāng)論文工作進(jìn)展順利時(shí)，趙耀教授總是鼓勵(lì)我再接再厲。同時(shí)趙教授嚴(yán)謹(jǐn)?shù)闹螌W(xué)態(tài)度、科學(xué)的工作方法、淵博的知識(shí)、敏銳的洞察力給我留下了深
