简介:PHPWIND论坛是一款流行的PHP论坛,界面美观,功能也比较强大。但大家仔细看一下就会发现不论是从界面功能还是代码风格,它和DISCUZ都非常相似,具体原因就不用多说了,毕竟DISCUZ出来比它要早很多。但安全上它没有继承DISCUZ的优点,DISCUZ论坛安全性非常好,而且商家对此也非常重视安全问题,国内论坛中不论从功能还是安全,
简介:脚本小子:在攻册中,我们分析了BBSXP论坛中存在的几个漏洞和几个可能存在隐患的地方,为了方便那些使用该论坛软件的朋友能够及时打好补丁,这里我们继承攻防结合的传统给大家带来防御的方法,本文谈到的补丁方法可以帮助大家抵抗可能到来的攻击。
简介:Motiondeblurringisabasicprobleminthefieldofimageprocessingandanalysis.Thispaperproposesanewmethodofsingleimageblinddeblurringwhichcanbesignificanttokernelestimationandnon-blinddeconvolution.Experimentsshowthatthedetailsoftheimagedestroythestructureofthekernel,especiallywhentheblurkernelislarge.SoweextracttheimagestructurewithsalientedgesbythemethodbasedonRTV.Inaddition,thetraditionalmethodformotionblurkernelestimationbasedonsparsepriorsisconducivetogainasparseblurkernel.Butthesepriorsdonotensurethecontinuityofblurkernelandsometimesinducenoisyestimatedresults.ThereforeweproposethekernelrefinementmethodbasedonL0toovercometheaboveshortcomings.Intermsofnon-blinddeconvolutionweadopttheL1/L2regularizationterm.Comparedwiththetraditionalmethod,themethodbasedonL1/L2normhasbetteradaptabilitytoimagestructure,andtheconstructedenergyfunctionalcanbetterdescribethesharpimage.Forthismodel,aneffectivealgorithmispresentedbasedonalternatingminimizationalgorithm.
简介:Inthispaper,thesmoothconnectionbetweentwoB-splinesurfacesisdiscussed.First,abriefproofofsomesimplesufficientconditionsofG~0andG~1continuityisgiven.Onthisbasis,anovelmethodforG~0orG~1connectionbetweentwoadjacentB-splinesurfacesispresented.Areparameterizationstepisfirstlytakenforoneofthesurfacessuchthattheyhavethesameparameterizationinvdirection,then,adjusttheirboundarycontrolverticestomakethemG~0orG~1connected.TheG~1connectionparameterisdeterminedbyanoptimizationproblem.Comparedwiththeexistedmethods,ourmethodissimpleandeasytobeusedinpractice.