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《視頻風(fēng)格化論文:視頻風(fēng)格化 sift flow sbr算法 遮擋 非剛性運(yùn)動(dòng)》由會(huì)員上傳分享,免費(fèi)在線閱讀,更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫(kù)。
1、【關(guān)鍵詞】視頻風(fēng)格化SIFTFlowSBR算法遮擋非剛性運(yùn)動(dòng)【英文關(guān)鍵詞】videoanimationSIFTFlowSBRalgorithmshieldednon-rigidmotion視頻風(fēng)格化論文:基于稠密特征對(duì)應(yīng)關(guān)系的視頻風(fēng)格化關(guān)鍵技術(shù)與系統(tǒng)【中文摘要】視頻風(fēng)格化技術(shù)是一種基于某一風(fēng)格化效果,對(duì)視頻的連續(xù)幀場(chǎng)景進(jìn)行渲染的方法。我們對(duì)視頻各幀直接進(jìn)行圖像風(fēng)格化,渲染后的視頻幀會(huì)出現(xiàn)畫(huà)刷抖動(dòng),影響視覺(jué)觀賞效果。視頻風(fēng)格化算法結(jié)合了視頻跟蹤技術(shù),借助連續(xù)幀之間的變化關(guān)系來(lái)傳播畫(huà)刷,能很好地解決畫(huà)刷抖動(dòng)問(wèn)題。本文提出了一種基于稠密特征對(duì)應(yīng)關(guān)系的視頻風(fēng)格化算法。首先,我們采用
2、改進(jìn)的SIFTFlow算法對(duì)原視頻中物體進(jìn)行跟蹤、對(duì)應(yīng),得出位移關(guān)系矩陣信息。接著,我們采用一種基于畫(huà)筆渲染(Stroke-BasedRendering,SBR)的算法對(duì)視頻第一幀進(jìn)行圖像渲染,生成畫(huà)刷。最后,我們根據(jù)之前計(jì)算出來(lái)各視頻幀之間的對(duì)應(yīng)關(guān)系來(lái)傳播畫(huà)刷,實(shí)現(xiàn)視頻的風(fēng)格化。各種不同運(yùn)動(dòng)類型場(chǎng)景的實(shí)驗(yàn)結(jié)果表明,本文方法在處理受遮擋目標(biāo)和非剛性運(yùn)動(dòng)目標(biāo)的場(chǎng)景下有較高的準(zhǔn)確率和較好的渲染效果。本文的改進(jìn)SIFTFlow算法適用于任意的SBR算法,可實(shí)現(xiàn)同一段視頻的多種風(fēng)格化渲染。本文實(shí)現(xiàn)了一個(gè)基于稠密特征對(duì)應(yīng)關(guān)系的視頻風(fēng)格化系統(tǒng)。系統(tǒng)包括5個(gè)功能界面,為用戶提供交互分層、
3、執(zhí)行SIFTFlow計(jì)算等7種功能。在執(zhí)行SIFTFlow計(jì)算后,用戶可根據(jù)自己喜愛(ài)的畫(huà)刷進(jìn)行參數(shù)調(diào)節(jié),對(duì)視頻實(shí)現(xiàn)多種風(fēng)格化的渲染?!居⑽恼縑ideoanimationisamethodforrenderingcontinuousvideoframesbasedonacertainimagerenderingstyle.Directlyrenderingeachvideoframebyoneimagepainterlyanimationalgorithmwillcausestrokesflickering.Asaresult,thestrokes’flickeringa
4、ffectsourvisualornamentaleffect.Videoanimationalgorithmcombineswiththevideotrackingtechnology,spreadsthestrokeswiththerelationshipviacontinuousframes,cansolvetheflickeringproblemwell.Thispaperproposesavideoanimationalgorithmbasedondensefeaturecorrespondence.Firstly,weuseimprovedSIFTFlowalg
5、orithmtotrackandcorrespondobjectsinoriginalvideoandwecanobtaintheinformationofdisplacementrelationshipmatrix.Secondly,weapplyoneSBRalgorithmtorenderthefirstframeofvideo,andwecancreatetheinformationofstrokes.Lastly,wespreadthestrokeswiththedisplacementrelationshipmatrixtoachievevideoanimati
6、on.Experimentsonavarietyofvideosshowthatthisalgorithmhasahigheraccuracyandabetterrenderingeffectindealingwiththeshieldedobjectsandobjectswithanon-rigidmotion.ThisimprovedSIFTFlowalgorithmappliesanySBRalgorithm.Wecanrenderonevideobyvariousvideoanimationstyles.Thispaperimplementsavideoanimat
7、ionsystembasedondensefeaturecorrespondence.Thesystemhasfiveinterfaces.Itprovides7functions,includingidentifyingmotionlayers,implementingSIFTFlow,etc.AfterimplementingSIFTFlow,theusercanadjustthestrokes’parametersaccordingtohis/herfavoritetoachievevariousanimat