简介:构造一个煤矿的虚拟景色是的3D为在煤采矿上现代化并且处理信息的客观要求生产。建立“一个数字矿”也是关键技术。由探索当前的世界范围的研究,软件和硬件工具和应用程序要求,与案例研究地点(Pingdingshan煤组的Daz-huang矿)结合了,为一个矿的3Dgeo可视化的一条途径出现工厂和矿车道深深地被讨论。在这研究,虚拟景色基于弧/信息和Site-Builder3D被学习的为一个大范围的快速的建模方法,和从2D景色的3D景色的自动产生被认识到。能从2D把矿车道系统变换成3D的如此的一个自动方法为Dazhuang矿被认识到。一些相关应用程序问题被学习,包括在在矿表面的虚拟景色的虚拟场面种的2D和3D和矿车道之间的属性质问,并列质问,距离措施,碰撞察觉和动态相互作用。一个原型系统被设计并且发展。
简介:AbstractObjective:To develop a downloadable three-dimensional (3D) study tool of the membranous labyrinth in order to facilitate the study of benign paroxysmal positional vertigo (BPPV).Background:The diagnosis and treatment of BPPV depend on an understanding of the anatomy of the vestibular labyrinth and its position relative to the head. To date, many illustrations have been made to explain principles of diagnosis and treatment of BPPV, but few have been based on anatomical studies of the membranous labyrinth.Methods:A previously reported 3D model of a human labyrinth was transposed to a 3D development software to allow the creation of markers along the semicircular ducts and utricle. These markers represent otoliths at different positions during movement of the model within the 3D environment. User-friendly tools were created to navigate the model, to allow clear documentation and communication of studied problems, and to study the model across relevant planes. The final model can be downloaded and is available for general useat https://bppvviewer.com/download/.Results:The model allows visualization of true membranous labyrinth anatomy in both ears simultaneously. The dependent portion of each semicircular duct, the planes of the cristae, and the position of the utricle can easily be visualized in any head position. Moveable markers can mark the expected progress of otolith debris with changes in head position and images can be captured to document simulations in various draw styles.Conclusion:This simple model could offer insights that lead to more accurate diagnosis and treatment of BPPV. It may also be useful as a tool to teach BPPV.
简介:Theconstructionofhigh-filledloessprojecthassomeengineeringandtechnicalchallenges,suchasexcavationofearthandbackfillingofeartharebothlarge,complexconstructionenvironment,varietyofinfluencefactors.Accordingtothissituation,thispaperpresentsadynamic3Dvisualizationmethodforhigh-filledprojectbasedonvolumerendering.Throughcomparativeanalysisandvisualanalysis,realizedatdifferenttimesoftheLoessfillinternaldetectiondatavisualizationandanalysispresented.Theresultsshowthatthisvisualizationmethodcandirectlyandaccuratelydisplaytheconstructionprocess,helpdecisionmakersmasterconstructioninformationandprocess.
简介:Background:Monitoringforesthealthandbiomassforchangesovertimeintheglobalenvironmentrequirestheprovisionofcontinuoussatelliteimages.However,opticalimagesoflandsurfacesaregenerallycontaminatedwhencloudsarepresentorrainoccurs.Methods:Toestimatetheactualreflectanceoflandsurfacesmaskedbycloudsandpotentialrain,3DsimulationsbytheRAPIDradiativetransfermodelwereproposedandconductedonaforestfarmdominatedbybirchandlarchinGenheCity,DaXing’AnLingMountaininInnerMongolia,China.Thecanopyheightmodel(CHM)fromlidardatawereusedtoextractindividualtreestructures(location,height,crownwidth).Fieldmeasurementsrelatedtreeheighttodiameterofbreastheight(DBH),lowestbranchheightandleafareaindex(LAI).SeriesofLandsatimageswereusedtoclassifytreespeciesandlandcover.MODISLAIproductswereusedtoestimatetheLAIofindividualtrees.CombiningalltheseinputvariablestodriveRAPID,high-resolutionopticalremotesensingimagesweresimulatedandvalidatedwithavailablesatelliteimages.Results:Evaluationsonspatialtexture,spectralvaluesanddirectionalreflectancewereconductedtoshowcomparableresults.Conclusions:Thestudyprovidesaproof-of-conceptapproachtolinklidarandMODISdataintheparameterizationofRAPIDmodelsforhightemporalandspatialresolutionsofimagereconstructioninforestdominatedareas.
简介:摘要:3D打印技术应用近年来突飞猛进,3D打印技术作为一种增材制造方式,利用数据模型,采用逐层打印的方法,进行造型设计、产品试制、个性化生产等。我院为了适应社会的发展,也在近年开设了3D打印技术应用专业。在专业的建设过程中,我们成功申报了3D打印技术应用专业全国示范基地,围绕着专业的定位、培养方向、师资建设、实训室建设等,需要在实践中不断进行探索和调整,思考和总结,以便更好地适应企业和社会的需要。本文对我院3D打印技术应用专业示范基地建设中的经验进行了思考、分析和总结,逐步梳理工作思路,细化工作方法,为后续相关实践活动的开展奠定坚实基础。