考慮局部和整體特征的手繪圖案合成方法研究.pdf

1、廈門大學(xué)碩士學(xué)位論文考慮局部和整體特征的手繪圖案合成方法研究姓名：劉東威申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：計(jì)算機(jī)技術(shù)指導(dǎo)教師：周昌樂(lè)2012AbstractTherenderingandsynthesisofstrokepatternsisanimportantresearchareaofnonphotorealisticrenderingsGenerally，astrokepatternismadeupofsomebasicelements，a

2、ndtheelementsappearrepeatedlyinthepatternArIintuitiveandeffectivesynthesismethodCanremarkablyreducetheworkloadofartistsTheexistingvectorbasedpatternsynthesismethodscannotgiveconsiderationtoboththelocalandglobalfeaturesof

3、patternsThispaperpresenttwomethodstosynthesizestrokepatternsThemethodstakeauserspecifiedreferencepatternasinputandsynthesizelarge‘。scalepatternswithsimilarfeaturesThesynthesizedresultsCaninheritboththelocalandglobalfeatu

4、resoftheinputstokepatternThefirstmethodclusterselementsintheinputpatternintoclasses，analyzethelocalandglobalfeaturesofthesample，andusegeneticalgorithmtogeneratenewpatternswithsimilarfeaturesThesecondmethodmainlyimproveso

5、nconsideringthedistancebetweenelementsThemethodfirstextractthefeatureswhichhaveanimportantimpactonvisualperceptionfromthereferencepattern，andthenadoptathreestageapproachtosynthesizenewpatternsThesynthesisstartswitharando

6、mlygeneratedpatternwhoseelementdensityisthesameasthatofthereferencepattern，andthensubstitutestheelementsiterativelytooptimizetheproportionandneighborhoodfeaturesFinally，theelements’positionsareiterativelyadjustedtoensure

7、thatthedistancefeatureofthetargetpatternisclosetothatofthereferenceoneThemethodcansynthesizemostofthestrokepatternswiththeelementdistributionfromuniformtonon—uniform，andfromoverlappingtonon—overlappingKeyWords=Texturing；