率失真优化的渐进几何压缩

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1、题分类号TP391Y890§25单位代码：10005学号：S200307119密缴：公开北京工业大学硕士学位论文英文并列里坠!垦：坠I塑Q星!!Q盥Q丛!丛l丕垦坠目￡BQg基量蒸曼!Y星堡壁Q丛星!BY￡Q丛￡l选曼墨!Q盟研究生姓名：——强童监专业：进笺扭廑旦益盎研究方向：攫盛丛型皇图翌围餐丝堡导师姓名：韭婆塞职称：塾攫一论文撒告提交日期2Q避生4且学1一授予f]期——授予单位名称和地址IE立工、业厶堂jb宝IⅡ秘5日匡卫巫圉』蛆关键词率一失真优化：渐进压缩；小波变换：三维网格压缩nABSTRACTRecen廿y，wjtlltlledevc】opmentofmodelillgand3Ds

2、c锄jngt。血1iqueincompu把r聊hics，more锄dmorc3Dgraphicd砒a盯eeme曙in岛aIld谢delyusedinmanyareasofscienceandtechnologyIsmce3Dgmphicdatausllallypossesshugeamountofsize，tlleyshouldbccompressedemciemlytorcducetllestoragc锄d订狮姗issioncost．Theideal仃i孤glemeshcompressiontecllIlologyw∞ldnotonlyr髓chhighercompressionratio’

3、buta】soproVidea矗e妇b】ebit—stre锄st兀lcturetomfor臼髓smimngon妇1ene“vDrk．Afterailalyzingtlleconventionalcompressionalgoritllms，aun墒edschemetoopthnjzeprogrcssjvegeome姆compressjoniSp∞posedaccofdingt0thenon—IIl】jfo册dis雠buti叽oftlledetailsalldtherequirementoftransm嘶ng3Ddataonne柳ork．111e卸mmodelisp甜hi∞edint0bIoc

4、ks，whichare也∞饥codedjnd印end吼tly．Theencodedbit-s竹朗msofblocl【sareass锄bledintoacode．s仃eambasedonR-【)optilIlizadon，whichensurctheblockwi山fichdeta“be衄m锄mcd髂soonaspoSsible．Specifically，、ⅣemaketllefollowiIlgcon证mutions：1．111edetailsof3Dmodelsusuallydistributenon-unifornlly．Intlleapplication，thediffbrentd郫c

5、sofintere啦arepaidtodj丘白锄tareasoftlle3Dmodel-Dumgpmgrcss．ve忱msmissionof3Dgeome舡ymodels，t11e仃atlsmissionorderofthedetailsatdi饪brcnt坤gionh嬲greateabctsonthequaIityofrccons仃uctcdmodeisatlowbit—ratc．Therefore，in血ispaper't11einputmeshisparthionedir曲severalblocks，whicharethenencodedindependcntly．Theb．t-str

6、c咖sofblocl(sareassembledintoacode-stre锄basedonR_Doptimization，whichensuretheblock、)l，ithrichdetailbetransmi位edassoonaspossible．11leproposedalgoritmpmducestllecode．str韵mwimtllenex．bles仇lctIll嗡wllichplacest士lenaⅡsmissionorderaccordingt0tllecharacteristicsofeachbit。stre锄．2。TheconV肋tionalnllelomeasuret

7、11ege∞1ehydistonjonismeHausdorfrdi对如cc，butitrcquirescomplexcomputation．IIlordertoreducemecompu诅tionalcomplcx毋of廿leoptimizationpmcess，wepmposedawaytoestimate廿lercdu吐ionoftheHIdistonionbascdont}leprocessingof