简介:Energytransmissionefficiencyinthemagneticpulsegeneratorsvarieswithsaturatedtimeofmagneticswitch.Anoptimalmatchingtimeexistsanddependsonthecompressionratio,underwhich,theenergytransmissionefficiencycanreachapproximate100%.Theequationofrequiredmagneticcorevolumeisobtainedbytakenintoaccounttheoptimalmatchingmode.Itindicatesthatagreatreductiononthevolumeisfeasibleundertheoptimalmatchingmode.Thecircuitsimulationcode-PSPICEisalsointroducedtosimulatea3-stagemagneticpulsecompressor,andtheresultsareinaccordancewiththoseofequivalentcircuitanalyses.
简介:在靠近范围的摄影测量学,3D信息获得基于图象匹配。代码标记的应用程序帮助改进自动匹配和匹配的精确性的水平。这份报纸调查惯性椭圆算法的应用程序编码标记匹配。我们能与某个边界计算一个目标的惯性椭圆。首先,方法被用于一个单个代码标记;角度并且可伸缩是有效的。然后,纸介绍多编码由惯性椭圆匹配方法的标记。旋转和同形异义图象的可伸缩的变化能被惯性椭圆算法计算。这些参数能被用于在任意的态度匹配靠近范围的摄影测量学的代码标记。
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:Themicroporesilencerwasdevelopeddomesticallyonanewprincipleandhasbeensuccessfullyusedinpowerplantssincetheearlyeighties.Duetotheuniquefeaturesofgreatnoisereduction,compactconfiguration,light,stableperformanceandconvenientforinstallation&maintenance,thecomprehensiveperformanceissuperiortotheconventionalsilencerofcompound-impedancetype,themicroporesilencerhasbeenwidelyadoptedbypowerplantsinChina.First,themicroporesilencerissuccessfullyusedinboiler’ssteamblow-off&safetyvalvesteamexhaustduringstart-upfornoisecontrol;laterusedtothenoisecontrolforsteamblow-offofsteampiping
简介:Alotof3Dshapedescriptorsfor3Dshaperetrievalhavebeenpresentedsofar.Thispaperproposesanewmechanism,whichemploysseveralexistingglobalandlocal3Dshapedescriptorsasinput.Withthesparsetheory,somedescriptorswhichplaythemostimportantroleinmeasuringsimilaritybetweenquerymodelandthemodelinthedatasetareselectedautomaticallyandanaffinitymatrixisconstructed.Spectralclusteringmethodcanbeimplementedtothisaffinitymatrix.Spectralembeddingofthisaffinitymatrixcanbeappliedtoretrieval,whichintegratingalmostalltheadvantagesofselecteddescriptors.Inordertoverifytheperformanceofourapproach,weperformexperimentalcomparisonsonPrincetonShapeBenchmarkdatabase.Testresultsshowthatourmethodisapose-oblivious,efficientandrobustnessmethodforeithercompleteorincompletemodels.
简介:Themaximummatchinggraphofagraphhasavertexforeachmaximummatchingandanedgeforeachpairofmaximummatchingswhichdifferbyexactlyoneedge.Inthispaper,weobtainalowerboundofdistancebetweentwoverticesofmaximummatchinggraph,andgiveanecessaryandsufficientconditionthattheboundcanbereached.
简介:为识别的目的SWATH(小Waterplane区域双胞胎的赫尔)严厉有效地并且完善SWATH轮船鈥檚表演的察觉技术,这份报纸基于规模论述新奇双向图象登记策略和mosaicing技术不变的特征变换(筛)算法。建议方法能帮助我们观察与为分析SWATH的控制鳍的性能的一个大视觉角度严厉。筛是规模,旋转和照明的最有效的本地特征之一不变。然而,在这个算法有一些假火柴率。以在水下机器视觉,仅仅由获得一个精确火柴率罐头,我们发现一在水下机器人很快并且识别目标的地点。第一,因此,火柴比率原则的选择在这份报纸被提出;第二,双向登记算法的一些优点被分析单向性的匹配方法的特征结束。最后,一自动在水下图象拼接方法根据图象的固定尺寸,然后边被建议鈥檚重叠节被主要部件分析算法合并。试验性的结果完成更好的登记和光滑的mosaicing效果,证明建议方法是有效的。
简介:Manyapproachesforhigh-resolutionimagereconstructionhavebeenproposedinsomeliteratures.Oneofthemostcommonlywaysistoreconstructahigh-resolutionimagefromanumberofrotatedandtranslatedimageswithlowresolution.Inthisprocess,theexposuredifferenceamongoriginalimageswilldecreasethequalityofthereconstructedimage.Inordertoremovetheinfluenceoftheexposuredifference,alightenergymatchingmethodisproposedinthispaper.Thetheoreticalanalysisisillustratedindetails.Experimentalresultsshowthatthetheoreticalanalysisiscorrectandtheproposedmethodisvalid.
简介:Stereomatchingisafundamentalandcrucialproblemincomputervision.Inthelastdecades,manyresearchershavebeenworkingonitandmadegreatprogress.Generallystereoalgorithmscanbeclassifiedintolocalmethodsandglobalmethods.Inthispaper,thechallengesofstereomatchingarefirstintroduced,andthenwefocusonlocalapproacheswhichhavesimplerstructuresandhigherefficiencythanglobalones.Localalgorithmsgenerallyperformfoursteps:costcomputation,costaggregation,disparitycomputationanddisparityrefinement.Everystepisdeeplyinvestigated,andmostworkfocusesoncostaggregation.Westudiedmostoftheclassicallocalmethodsanddividethemintoseveralclasses.Theclassificationwellillustratesthedevelopmenthistoryoflocalstereocorrespondenceandshowstheessenceoflocalmatchingalongwithitsimportantanddifficultpoints.Attheendwegivethefuturedevelopmenttrendoflocalmethods.
简介:当历史的中国书法工作是被数字化,检索的问题成为新挑战。但是,当前,没有光学字符识别技术能把书法字符图象变换成文本,存在笔迹字符识别途径也不能为它工作。这篇论文建议一条新奇途径到高效地根据类似检索中国书法人物:书法特性图象被许多歧视的特征代表,并且有合理有效性的高检索速度被完成。首先,没有类似于询问的可能性的书法字符被比较字符复杂性,笔划密度和笔划伸出一步一步地滤出。然后,类似的书法人物根据他们近似形状火柴生产的匹配的费用被检索并且评价。以便加快检索,我们采用了高维的数据结构—PK树。最后,算法的效率被一个初步的实验与3012幅书法特性图象表明。电子增补材料这篇文章(doi:10.1007/s11390-007-9077-8)的联机版本contatins增补材料,它对授权用户可得到。