基于圖象的繪制關(guān)鍵技術(shù)研究.pdf

1、西北工業(yè)大學(xué)博士學(xué)位論文基于圖象的繪制關(guān)鍵技術(shù)研究姓名：張汗靈申請學(xué)位級別：博士專業(yè)：信號與信息處理指導(dǎo)教師：郝重陽20031001，。。，。。。；；；；；；；；；；；；；；；；；；；；；；；；；；。。。。。；；』92l!：：；；；，。；。。；；；；；。。。。。。。，。。；；；；；；；；；；；；；；。。AbstractImageBasedRendering(IBR)techniqueshaverecentlyreceivedmuchat

2、tentionintheVirtualReality(VR)andGraphicscommunitybecauseoftheirpotentialtocreateveryrealisticimageonpopularhardwareplatformThedissertationaddressesthefollowingseveralkeytechniques：theimagemosaic，theimagemorphing，thesimu

3、lationbasedonimage，hybridrenderbasedongeometryandimage1Ontheresearchoftheautomaticimagemosaic，wepresentanewautomatedpanoramicmosaicalgorithmbasedonfeatureThealgorithmsolvetheproblemhowtodecidetheCOC豫cientsoftheinitialthe

4、weightedfunctionandthewidthofthetransitionzoneThealgorithmcanbefinishedwithautomatinginmostcaseandsuitsforanyscaleimagewithunknownanyparameterofcameraMosaicimageissmoothandhasnogap2AnewimagemorphingalgorithmbasedonBezier

5、featurecurveispresented，whichspecifiesmorphingfeatureusingBezierfeaturecurveComparedwithfield—basedimagemorphing，wecanspecifythefeaturemoreexactlyandthenumbersoffeatureprimitivearereducedFromexperimentalresults，thealgori

6、thm’Sspeedistrebleimprovedgeneratingasmoothmorphingimage，comparingwithfield—basedimagemorphing3AautomaticimagemorphingalgorithmbasedonwaveletedgedetectionispresentedThealgorithmcallautomaticallyspecifymorphingfeatureThem

7、ethodmodifiesfieldbasedimagemorphing，reducesthecomplexdegreeofmorphingalgorithmandacceleratesmorphingFromtheexperimentresults，thealgorithmcanautomaticallymetamorphoseimageandavoidthemosttediouspartofimagemorphing4Aautoma

8、ticimagemorphingalgorithmbasedonmodifyingactivecontourmodelispresent，whichautomaticallyspecifiesthefeaturepointwithmodifyingactivecontourmodelFromtheexperimentresultsshowthatthealgorithmreducestheburdenoffeaturespecifica

9、tionandmetamorphosesautomatically5We、presentanewalgorithmoffacialexpressionanimationbasedonradialbasisfunctionnetworksThealgorithmusesradialbasisfunctionnetworkstoconstructthewarpfurtctionusingonlyasmallnumberofanchorpoi

10、ntsTheanimationresultshowsthealgorithmprovidesapowerfulmechanismwithprocessingfacialexpressionsandsuitsforgeneralhardwareplatformsandInternetenvironment6WepresentanewhybridrenderalgorithmbasedongeometryandimageThealgorit