Thisbookisforeveryonewhoneedstotesttheweb.Asatester,you'llautomateyourtests.Asadeveloper,you'llbuildmorerobustsolutions.Andasateam,you'llgainavocabularyandameanstocoordinatehowtowriteandorganizeautomatedtestsfortheweb.Followthetestingpyramidandle

ContentsPrefacevTypographicalConventionsxi1Introduction11.1AQuickOverviewofS.......................31.2UsingS...............................51.3AnIntroductorySession......................61.4WhatNext?.............................122DataManipulation132.1Objects...............................132.2Connections.............................202.3DataManipulation.........................272.4TablesandCross-Classification...................373TheSLanguage413.1LanguageLayout..........................413.2MoreonSObjects.........................443.3ArithmeticalExpressions......................473.4CharacterVectorOperations....................513.5FormattingandPrinting.......................543.6CallingConventionsforFunctions.................553.7ModelFormulae...........................563.8ControlStructures..........................583.9ArrayandMatrixOperations....................603.10IntroductiontoClassesandMethods................664Graphics694.1GraphicsDevices..........................714.2BasicPlottingFunctions......................72viiviiiContents4.3EnhancingPlots...........................774.4FineControlofGraphics......................824.5TrellisGraphics...........................895UnivariateStatistics1075.1ProbabilityDistributions......................1075.2GeneratingRandomData......................1105.3DataSummaries...........................1115.4ClassicalUnivariateStatistics....................1155.5RobustSummaries.........................1195.6DensityEstimation.........................1265.7BootstrapandPermutationMethods................1336LinearStatisticalModels1396.1AnAnalysisofCovarianceExample................1396.2ModelFormulaeandModelMatrices...............1446.3RegressionDiagnostics.......................1516.4SafePrediction....................

Thispaperisasurveyofthetheoryandmethodsofphotogrammetricbundleadjustment,aimedatpotentialimplementorsinthecomputervisioncommunity.Bundleadjustmentistheproblemofrefiningavisualreconstructiontoproducejointlyoptimalstructureandviewingparameterestimates.Topicscoveredinclude:thechoiceofcostfunctionandrobustness;numericaloptimizationincludingsparseNewtonmethods,linearlyconvergentapproximations,updatingandrecursivemethods;gauge(datum)invariance;andqualitycontrol.Thetheoryisdevelopedforgeneralrobustcostfunctionsratherthanrestrictingattentiontotraditionalnonlinearleastsquares.

TheRobustMaximumPrincipleTheoryandApplications控制理论经典书籍，了解线性系统，提供看待系统的角度。

Writtenbyanexpertinthegameindustry,ChristerEricson'snewbookisacomprehensiveguidetothecomponentsofefficientreal-timecollisiondetectionsystems.Thebookprovidesthetoolsandknow-howneededtoimplementindustrial-strengthcollisiondetectionforthehighlydetaileddynamicenvironmentsofapplicationssuchas3Dgames,virtualrealityapplications,andphysicalsimulators.Ofthemanytopicscovered,akeyfocusisonspatialandobjectpartitioningthroughawidevarietyofgrids,trees,andsortingmethods.Theauthoralsopresentsalargecollectionofintersectionanddistancetestsforbothsimpleandcomplexgeometricshapes.SectionsonvectorandmatrixalgebraprovidethebackgroundforadvancedtopicssuchasVoronoiregions,Minkowskisums,andlinearandquadraticprogramming.Ofutmostimportancetoprogrammersbutrarelydiscussedinthismuchdetailinotherbooksarethechapterscoveringnumericalandgeometricrobustness,bothessentialtopicsforcollisiondetectionsystems.Alsouniquearethechaptersdiscussinghowgraphicshardwarecanassistincollisiondetectioncomputationsandonadvancedoptimizationformoderncomputerarchitectures.Allinall,thiscomprehensivebookwillbecometheindustrystandardforyearstocome.

用meanshift算法实现的图像平滑操作，压缩包内含参考文献MeanShift：Arobustapproachtowardfeaturespaceanalysis

ProfessionalExcelDevelopment:TheDefinitiveGuidetoDevelopingApplicationsUsingMicrosoftExcel,VBA,and.NET(2ndEdition)2ndEditionbyRobBovey(Author),DennisWallentin(Author),StephenBullen(Author),JohnGreen(Author)“AsExcelapplicationsbecomemorecomplexandtheWindowsdevelopmentplatformmorepowerful,Exceldevelopersneedbookslikethistohelpthemevolvetheirsolutionstothenextlevelofsophistication.ProfessionalExcelDevelopmentisabookfordeveloperswhowanttobuildpowerful,state-of-the-artExcelapplicationsusingthelatestMicrosofttechnologies.”–GabhanBerry,ProgramManager,ExcelProgrammability,Microsoft“ThefirsteditionofProfessionalExcelDevelopmentismymost-consultedandmost-recommendedbookonOfficedevelopment.Thesecondeditionexpandsboththedepthandrange.Itshinesbecauseittakeseveryissueonestepfurtherthanyouexpect.Thebookreliesontheauthors’current,real-worldexperiencetocovernotonlyhowafeatureworks,butalsothepracticalimplicationsofusingitinprofessionalwork.”–ShaunaKelly,Director,ThendaraGreen“Thisbookillustratestechniquesthatwillresultinwell-designed,robust,andmaintainableExcel-basedapplications.Theauthors’advicecomesfromdecadesofsolidexperienceofdesigningandbuildingapplications.Thepracticalityofthemethodsiswellillustratedbytheexampletimesheetapplicationthatisdevelopedstep-by-stepthroughthebook.EveryseriousExceldevelopershouldreadthisandlearnfromit.Idid.”–BillManville,ApplicationDeveloper,BillManvilleAssociatesTheStart-to-FinishGuidetoBuildingState-of-the-ArtSolutionswithExcel2007Inthisbook,fourworld-classMicrosoft®Exceldevelopersofferstart-to-finishguidanceforbuildingpowerful,robust,andsecureapplicationswithExcel.Theauthors—threeofwhomhavebeenhonoredbyMicrosoftasExcelMostValuableProfessionals(MVPs)—showhowtoconsist

Createimageprocessing,objectdetectionandfacerecognitionappsbyleveragingthepowerofmachinelearninganddeeplearningwithOpenCV4andQt5KeyFeaturesGainpracticalinsightsintocodeforallprojectscoveredinthisbookUnderstandmoderncomputervisionconceptssuchascharacterrecognition,imageprocessingandmodificationLearntouseagraphicsprocessingunit(GPU)anditsparallelprocessingpowerforfilteringimagesquicklyBookDescriptionOpenCVandQthaveproventobeawinningcombinationfordevelopingcross-platformcomputervisionapplications.Byleveragingtheirpower,youcancreaterobustapplicationswithbothanintuitivegraphicaluserinterface(GUI)andhigh-performancecapabilities.Thisbookwillhelpyoulearnthroughavarietyofreal-worldprojectsonimageprocessing,faceandtextrecognition,objectdetection,andhigh-performancecomputing.You'llbeabletoprogressivelybuildonyour...

AprilTag:Arobustandflexiblevisualfiducialsystem

RobustControlDesignwithMATLAB(第二版)源代码，这是最新的第二版书籍对应的源代码。
非常非常实用的一本书，建议学习鲁棒控制的同学仔细阅读。

在日常工作中，钉钉打卡成了我生活中不可或缺的一部分。然而，有时候这个看似简单的任务却给我带来了不少烦恼。 每天早晚，我总是得牢记打开钉钉应用，点击"工作台"，再找到"考勤打卡"进行签到。有时候因为工作忙碌，会忘记打卡，导致考勤异常，影响当月的工作评价。而且，由于我使用的是苹果手机，有时候系统更新后，钉钉的某些功能会出现异常，使得打卡变得更加麻烦。 另外，我的家人使用的是安卓手机，他们也经常抱怨钉钉打卡的繁琐。尤其是对于那些不太熟悉手机操作的长辈来说，每次打卡都是一次挑战。他们总是担心自己会操作失误，导致打卡失败。 为了解决这些烦恼，我开始思考是否可以通过编写一个全自动化脚本来实现钉钉打卡。经过一段时间的摸索和学习，我终于成功编写出了一个适用于苹果和安卓系统的钉钉打卡脚本。