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裸眼3D显示关键技术研究重庆大学硕士学位论文（学术学位）学生姓名：谭伟敏指导教师：黄扬帆教授刘然副教授专业：电路与系统学科门类：工学重庆大学通信工程学院二O一四年四月ResearchonKeyTechnologiesofGlasses-Free3DDisplayAThesisSubmittedtoChongqingUniversityinPartialFulfillmentoftheRequirementfortheMaster’sDegreeofEngineeringByTanWeiminSupervisor:Prof.HuangYangfanAssistantSupervisor:AssociateProf.LiuRanSpecialty:CircuitandSystemCollegeofCommunicationEngineeringofChongqingUniversity,Chongqing,ChinaApril,2014中文摘要摘要近年来，随着3D显示技术的快速发展，3D产品变得越来越流行。然而，目前大多数的普通3D产品仍然需要观众佩戴特殊的眼镜，这严重制约了3D产品的普及。为解决这一问题，裸眼3D显示技术应运而生，并受到广泛关注。本论文的研究目的是通过对裸眼3D显示的关键技术进行研究，解决裸眼3D显示面临的内容制作和播放问题，为裸眼3D显示的应用提供理论和技术支撑。论文首先介绍了裸眼3D显示原理，然后在该原理的基础上，对裸眼3D显示的关键技术——裸眼3D内容制作和裸眼3D内容播放展开研究。在裸眼3D内容制作方面，重点研究了基于Autodesk®Maya软件的裸眼3D内容制作方法和基于深度图像绘制(depth-image-basedrendering,DIBR)的裸眼3D内容生成算法；在裸眼3D内容播放方面，提出了裸眼3D播放器的硬件架构，并给出了基于DIBR算法以及多视图图像融合算法的硬件实现。论文意在获取高质量裸眼3D内容和裸眼3D播放效果的同时，降低算法的复杂性，以便硬件实现。论文的主要研究成果包括：①根据shift-sensor摄像机设置的性质，分析并改进了基于DIBR的视图合成算法，并研究了采用改进算法合成多视点视图的原理。改进后的算法和原算法相比，合成新视点的图像质量相当，适合硬件实现。②介绍了基于Autodesk®Maya软件制作裸眼3D内容的方法。该方法采用CelVision3DCreator插件，通过设置参数、调整不同平面之间的距离，绘制得到8幅具有视差的图像。该方法虽然复杂、耗时较长，但制作过程灵活，制作的裸眼3D内容质量更高、3D效果更明显。③提出了一种多视图图像融合算法。该算法首先对含有人眼视差的多幅视图进行子像素抽取，然后按照光栅子像素排列规律进行排列，最后合成得到适合基于光栅的裸眼立体显示器显示的合成图像。实验表明该算法可对8幅全高清视图进行有效的融合，融合得到的合成图像适合于基于光栅的裸眼立体显示器显示，且算法硬件实现简单。④在FPGA开发板上，用较少的硬件开销实现了DIBR系统和图像融合系统。相应地，给出了硬件架构、工作原理、时序图和仿真结果。本论文力求在研究方法与思路上有所突破，其研究成果将为裸眼3D显示的应用提供具有实用价值的新方法。关键词：3D显示，裸眼，图像融合，DIBR，FPGAI重庆大学硕士学位论文II英文摘要ABSTRACTWiththerapiddevelopmentof3Ddisplaytechnologyinrecentyears,3Dproductshavebecomemoreandmorepopular.However,themostcommon3Dproductsrequireuserstowearspecialglasses,whichhasseriouslylimitedthepopularityof3Dproducts.Tosolvethisproblem,glasses-free3Ddisplaytechnologycomesintobeingandhasbeenwidelyconcerned.Thepurposeofthisdissertationistosolvetheproblemsofcontentcreationandplayfacingglasses-free3Ddisplaybyresearchingonkeytechnologiesofglasses-free3Ddisplay,whichwillprovidethetheoreticalandtechnicalsupportfortheapplicationofglasses-free3Ddisplay.Inthisdissertation,thetheoreticalbasisofglasses-free3Ddisplayisfirstlyintroduced.Then,basedonthetheoreticalbasis,thekeytechniquesofglasses-free3Ddisplay,glasses-free3Dcontentcreationandplay,arestudied.Asforcontentcreation,twoglasses-free3Dcontentcreationmethods,themethodbasedonAutodesk®Mayasoftwareandthemethodbasedondepth-image-basedrendering(DIBR),arethoroughlystudied;asforcontentplay,ahardwarearchitectureofglasses-free3Dplayerisproposed.Moreover,thehardwareimplementationofDIBRandmulti-viewimagefusionalgorithmisdeliberated.Thisdissertationaimsatachievinghighqualityofglasses-free3Dcontentsandplayereffectswithrelativelylowcomplexityofalgorithmswhichcanfacilitatehardwareimplementation.Themainresearchresultsofthisdissertationaresummarizedasfollows.①Accordingtothecharacteristicsofshift-sensorcamerasetup,theviewsynthesisalgorithmbasedonDIBRisanalyzedandimproved,andthetheoryofmulti-viewsynthesisbasedontheimprovedalgorithmisstudied.Comparedwithoriginalalgorithm,theimprovedalgorithmcanprovidecomparableimagequality,whileitisfacilitativeforhardwareimplementation.②Aglasses-free3DcontentscreationmethodbasedonAutodesk®Mayasoftwareisintroduced.Thismethodcanrender8viewsusingCelVision3DCreatorpluginbysettingparameterstoadjustthedistancebetweendifferentplanes.Althoughthemethodiscomplexandtime-consuming,itisflexibleforcontentcreation.Inaddition,thequalityofcreatedglasses-free3Dcontentsishigher,and3Deffectsarebetter.III重庆大学硕士学位论文③Amulti-viewimagefusionalgorithmisproposed.Firstly,thealgorithmextractssub-pixelsfrommultiviewswhichcontainparallaxes,andthenarrangethesesub-pixelsinaccordancewiththesub-pixelarrangementruleforparallaxbarrier.Finally,compositeimageisobtainedwhichadaptstoglasses-free3Ddisplaysbasedonparallaxbarrier.Experimentalresultsshowthattheproposedapproachcanfuse8FullHighDefinition(FHD)viewseffectively,andthecompositeimagecanbedisplayedonglasses-free3Ddisplaysbasedonparallaxbarrier.Moreover,thisalgorithmiseasyforhardwareimplementation.④TheDIBRsystemandimagecompositesystemareimplementedonadevelopmentplatformofFPGAwithlowhardwarecost.Correspondingly,thehardwarearchitecture,operationalprinciple,timingdiagramandsimulationresultsarealsopresented.Asanoriginalwork,theauthortriedhisbesttomakeabreakthroughonresearchmethodsandresearchthoughts,andtheresearchresultswillprovidenewmethodsforthepracticalapplicationsofglasses-free3Ddisplay.Keywords:3Ddisplay,Glasses-free,imagefusion,DIBR,FPGAIV目录目录中文摘要········································································································I英文摘要······································································································III图表目录······································································································IX术语表········································································································XIII1绪论············································································································11.1立项依据··································································