简介：

简介：部分吸藏和碎裂的线愿望导致直线通讯的各种各样的盒子，例如一对一，一对多或many-to-many。然而，复杂通讯，例如一对多并且many-to-many，通常被忽略或不能在存在方法完全被建立。这里，复杂通讯的本质将被分析。基于一根直线的二个特征，它被认为一根直线是一套在同一直线上的点，在复杂通讯之间的相容性和通讯被证明的点的唯一限制和通讯的新唯一限制介绍因为匹配的线被建议。基于复杂通讯的分析，线特征组的一个新概念被定义为证实所有通讯完全简单地被描述从不同图象然后一个新算法在直线特征之中描述一套不可分的通讯。有真实立体声图象的试验性的结果说明在直线之中的复杂通讯是实际盒子并且能有效地被建立。

简介：Binocularcomputervisionisbasedonbionics,afterthecalibrationthroughthecameraheadbydouble-exposureimagesynchronization,accesstothecalculationoftwo-dimensionalimagepixelsofthethree-dimensionaldepthinformation.Inthispaper,afastandrobuststereovisionalgorithmisdescribedtoperformin-vehicleobstaclesdetectionandcharacterization.Thestereoalgorithmwhichprovidesasuitablerepresentationofthegeometriccontentoftheroadsceneisdescribed,andanin-vehicleembeddedsystemispresented.Wepresentthewayinwhichthealgorithmisused,andthenreportexperimentsonrealsituationswhichshowthatoursolutionisaccurate,reliableandefficient.Inparticular,bothprocessesarefast,generic,robusttonoiseandbadconditions,andworkevenwithpartialocclusion.

简介：Inthetest-fieldcalibration,multi-azimuthstereoimagepairsareproducedoftheoutdoorlargecontrol-fieldbythestereo-visionsystemundercali-bration.Whileintheanalyticalprocessing,therelationshipbetweenimagepairsisadoptedasaconstraintcondition,whichensuresthestabilityandqualityofthecalibrationresults.Thispaperintroducesthedeductionprocessoftheconstraintconditions.

简介：Stereomatchingisafundamentalandcrucialproblemincomputervision.Inthelastdecades,manyresearchershavebeenworkingonitandmadegreatprogress.Generallystereoalgorithmscanbeclassifiedintolocalmethodsandglobalmethods.Inthispaper,thechallengesofstereomatchingarefirstintroduced,andthenwefocusonlocalapproacheswhichhavesimplerstructuresandhigherefficiencythanglobalones.Localalgorithmsgenerallyperformfoursteps:costcomputation,costaggregation,disparitycomputationanddisparityrefinement.Everystepisdeeplyinvestigated,andmostworkfocusesoncostaggregation.Westudiedmostoftheclassicallocalmethodsanddividethemintoseveralclasses.Theclassificationwellillustratesthedevelopmenthistoryoflocalstereocorrespondenceandshowstheessenceoflocalmatchingalongwithitsimportantanddifficultpoints.Attheendwegivethefuturedevelopmenttrendoflocalmethods.

简介：Afeature-constrainedstereomatchingalgorithmforlunarrovernavigationispresentedbasedontheanalysisofthestereovisionsystemandworkingenvironmentsoflunarrover.Infeature-matchingphase,edgepointsareextractedwithwavelettransformandareusedastheprimitivesformatching.Thenthreecriterionsareutilizedinturntoselectthecorrectmatchingpointswiththepyramidalsearchingstrategy.Asaresult,thealgorithmfindscorrespondingpointssuccessfullyforlargenumbersofedgepoints.Area-matchingisaccomplishedundertheconstraintofedge-matchingresults,andthecorrelationisselectedasthecriterion.Experimentalresultswithrealimagesofnaturalterrainindicatethatthealgorithmprovidesdensedisparitymapswithfairlyhighaccuracy.

简介：匹配算法与的适应加权的立体声多，水平和双向动态编程基于地面控制点(GCP)被介绍。到没有失去匹配的精确的减少时间复杂性，使用一多铺平搜索计划，粗糙的匹配在典型不同空间图象被处理，当好匹配在不同偏移量空间被处理时，想象。在上面的水平，GCP被强制相互的限制和阀值限制的提高的容量的反复的算法获得。在高度可靠的GCP的管理下面，双向动态编程框架被采用在优化路径解决矛盾。在底层，到运用时间的还原剂，不同偏移量空间被建议高效地完成稠密的不同图象。另外，适应双支持重量策略被介绍聚集匹配的费用，它考虑光度计、几何的信息。进一步，processing以后算法能改善在有深度断绝的区域的不同结果并且由用双阀值算法的吸藏相关，在错过立体声的地方，信息从包围区域被代替。表明算法的有效性，我们在场四的二组试验性的结果广泛地使用了标准立体声数据集合包括有另外的方法的性能和比较的讨论，它证明算法有快速度不仅，而且显著地改进整体的优化的效率。

简介：产生能来自任何很多来源的格子DEM(数字举起模型)：例如，到轮廓地图的数字变换的类似物由听模型的申请列在后面，否则经由数字摄影测量学的直接举起点建模适用于在空中的图象或卫星图象。除了从激光雷达数据获得的点云的推广，当前，通常赞成的途径指数字摄影测量学的应用。在如此的推广的最重要的步骤之一是为变化形式点(象素)匹配进程的立体声建立：在建模很困难任何同质的区域由于不同空间特征的缺乏喜欢水盖子或森林canopied区域。作为结果，自动化过程的申请肯定产生错误的举起价值。在这份报纸，我们在场并且为改进经由一个熵质地过滤器的利用产生的立体声DEM的质量使用一个方法。过滤器是在立体声匹配以前，申请了同质的区域的抽取以便一个统计质地过滤器然后能被申请经由一种空间关联技术的推广在插值和精确性评价以前移开异常评估价值。为例证，我们使用了翠菊1B图象的立体声对。

简介：Wepresentanalgorithmwhichcanrealize3Dstereovisionsimultaneouslocalizationandmapping(SLAM)formobilerobotinunknownoutdoorenvironments,whichmeansthe6-DOFmotionandasparsebutpersistentmapofnaturallandmarksbeconstructedonlineonlywithastereocamera.Inmobileroboticsresearch,weextendFastSLAM2.0likestereovisionSLAMwith'purevision'domaintooutdoorenvironments.UnlikepopularstochasticmotionmodelusedinconventionalmonocularvisionSLAM,weutilizetheideasofstructurefrommotion(SFM)forinitialmotionestimation,whichismoresuitablefortherobotmovinginlarge-scaleoutdoor,andtexturedenvironments.SIFTfeaturesareusedasnaturallandmarks,andits3Dpositionsareconstructeddirectlythroughtriangulation.Consideringthecomputationalcomplexityandmemoryconsumption,Bkd-treeandBest-Bin-First(BBF)searchstrategyareutilizedforSIFTfeaturedescriptormatching.Resultsshowhighaccuracyofouralgorithm,eveninthecircumstanceoflargetranslationandlargerotationmovements.

简介：SimWallisauser-friendly,stereotileddisplaywallsystemcomposedof18commodityprojectorsoperatedbyaLinuxgraphicscluster.Collaboratingtogether,theseprojectorsworkasasinglelogicaldisplaycapableofgivingahigh-resolutionshow,large-scale,andpassivestereoscene.Inordertoavoidtedioussystemsetupandmaintenance,software-basedautomaticgeometryandphotometriccalibrationareused.Thesoftwarecalibrationisintegratedtothesystemseamlesslybyanon-cardtransformmethodandistransparenttousers.Toend-users,SimWallworksjustasacommonPC,butprovidessupercomputing,renderinganddisplayingability.Inaddition,SimWallhasstereoscopicfunctionthatgivesusersasemi-immersiveexperienceinpolarizedpassiveway.Thispaperpresentssystemarchitecture,implementation,andothertechnicalissuessuchashardwareconstraints,projectorsalignment,geometryandphotometriccalibration,implementationofpassivestereo,anddevelopmentofoverallsoft-wareenvironment.

简介：Anactivestereovisionsystembasedonamodelofneuralpathwaysofhumanbinocularmotorsystemisproposed.Withthismodel,itisguaranteedthatthetwocamerasoftheactivestereovisionsystemcankeeptheirlinesofsightfixedonthesametargetobjectduringsmoothpursuit.Thisfeatureisveryimportantforactivestereovisionsystems,sincenotonly3Drecon-structionneedsthetwocamerashaveanoverlappingfieldofvision,butalsoitcanfacilitatethe3Dreconstructionalgorithm.Toevaluatetheeffectivenessoftheproposedmethod,somesoftwaresimulationsaredonetodemonstratethesametargettrackingcharacteristicinavirtualenvironmentapttomistrackingeasily.Here,mistrackingmeanstwoeyestracktwodifferentobjectsseparately.Thentheproposedmethodisimplementedinouractivestereovisionsystemtoperformrealtrackingtaskinalaboratoryscenewhereseveralpersonswalkself-determining.Beforetheproposedmodelisimplementedinthesystem,mis-trackingoccurredfrequently.Afteritisenabled,mistrackingneveroccurred.Theresultshowsthatthevisionsystembasedonneuralpathwaysofhumanbinocularmotorsystemcanreliablyavoidmistracking.

简介：Graycrosscorrelationmatchingtechniqueisadoptedtoextractcandidatematcheswithgraycrosscorrela-tioncoefficientslessthansomecertainrangeofmaximalcorrelationcoefficientcalledmulti-peakcandidatematches.Multi-peakcandidatesareextractedcorrespondingtothreeclosestfeaturepointsatfirst.Thecorrespondingmulti-peakcandidatematchesareusedtoconstructthemodelpolygon.Correspondenceisdeterminedbasedonthelocalgeometricrelationsbetweenthethreefeaturepointsandthemulti-peakcandidates.Thedisparitytestandtheglobalconsistencycheckoutareappliedtoeliminatetheremainingambiguousmatchesthatarenotremovedbythelocalgeometricrelationaltest.Experimentalresultsshowthattheproposedalgorithmisfeasibleandaccurate.

简介：Theregio-andstereo-selectivehydroxylationsoftwoingenanediterpenoids,20-deoxyingenol(1)and13-oxyingenoldodecanoat(2),bythefilamentousfungiMortierellaramannianaandGibberellafujikuroiwereinvestigatedinthepresentstudy.Fourundescribedmetabolites(3–6)ofsubstrate1andtwoundescribedmetabolites(7and8)ofsubstrate2wereisolated.AlltheliteswereidentifiedashydroxylatedingenanederivativesbyextensiveNMRandHR-ESI-MSdataanalyses.Allthebiotransformedcompoundsandthesubstrateswereevaluatedfortheircytotoxicitiesagainstthreehumancancercelllines,includinghumancoloncancerCaco-2,breastcancerMCF-7,andadriamycin(ADM)-resistantMCF-7/ADMcelllines.Allingenanealcohols(1,and3–6)displayednosignificantcytotoxicactivities.Thesubstrate13-oxyingenoldodecanoat(2)showedmoderatecytotoxicitywithIC50valuesbeing35.59±5.37μmol·L~(-1)(Caco-2),24.04±4.70μmol·L~(-1)(MCF-7),and22.24±5.19μmol·L~(-1)(MCF-7/ADM).However,metabolites7and8displayednosignificantcytotoxicity.TheseresultsindicatedthatthehydroxylationattheC~(-1)3aliphaticacidesterofsubstrate2cansignificantlyreducethecytotoxicactivity.

简介：Thedifferentregioselectiveandstereoselectiveproductswereobtainedbythereductionofstigmast-4,22-dien-3,6-dionewithNaBH4-CH3OHwhendifferentkindsofmetalionswasaddedtothereaction.

简介：TheYDT1625-11microphoneandTeyuerwall-screentypestereomusicalsystemismadebytheBeijingKingCatAcousticsEquipmentFactorywithmulti-patenttechnology.Itisnotedforitsthinness,fullrangeoffrequencybands,andlowdistortionThesuper-thingeontetricformoffersconvenienceforusers.Thefrequencybandscoverawideacousticfieldfromlowtohighfrequencies.Thedistortionislowerthantheinternationalfirststepindex,favourableforthedesignandmanufactureoftheacousticsystem.Thefinedrivingsystemraisestherigidityofthediaphragm,thevalueofdynamicandtheradiatingconditionsofexcitationsource.

简介：Ageometricalanalysisbasedalgorithmisproposedtoachievethestereomatchingofasingle-lensprismbasedstereovisionsystem.Bysettingthemulti-faceprisminfrontalpositionofthestaticCCD(CM-140MCL)camera,equivalentstereoimageswithdifferentorientationsarecapturedsynchronouslybyvirtualcameraswhicharedefinedbytwoboundarylines:theopticalaxisandCCDcamerafieldofviewboundary.Subsequently,thegeometricalrelationshipbetweenthe2Dstereoimagesandcorresponding3Dsceneisestablishedbyemployingtwofundamentals:raysketchinginwhichallthepertinentpoints,lines,andplanesareexpressedinthe3Dcameracoordinatesandtheruleofrefraction.Landingonthisrelationship,theepipolargeometryisthusobtainedbyfittingasetofcorrespondingcandidatepointsandthereafter,stereomatchingoftheprismbasedstereovisionsystemisobtained.Moreover,theuniquegeometricalpropertiesoftheimagingsystemallowtheproposedmethodfreefromthecomplicatedcameracalibrationproceduresandtobeeasilygeneralizedfrombinocularandtri-oculartomulti-ocularstereovisionsystems.Theperformanceofthealgorithmispresentedthroughtheexperimentsonthebinocularimagingsystemandthecomparisonwithaconventionalprojectionmethoddemonstratestheefficientassessmentofournovelcontributions.