简介:2008年夏天,百度公司高调宣布进军C2C,阿里巴巴很快做出反应,将旗下广告平台阿里妈妈并入C2C平台淘宝网,对淘宝网再次注资50亿元,宣布淘宝网将继续长期免费下去,并加快淘宝网的上市进程,现在两者的攻防战是整个互联网的热点。再看看其它互联网模式,中国的
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简介:Triangulationiswidelyusedinscientificresearch,suchasfiniteelementmeshgeneration,surfacereconstructionandthereconstructionofthedensityfielddata.Thispaperproposesanewmethodcombiningimageprocessinganddensity-controlledCentroidalVoronoitessellationstoquicklygenerateadensity-controlledconstrainedDelaunaytriangulationfor2Dseaarea.Firstly,preprocessdigitalimagesoftheseaareaandextracttheboundaryofseawaterregionbyeight-neighborsearchingalgorithm.Then,Iuse"Odd-EvenTesting"methodtocheckifonerandomvertexisinsidetheboundaryandinsertrandomverticesintotheboundary.Finally,wegettheCDTofrandomverticesbydensity-controlledCVT-Lloydmethod.Wealsogivesomecomparisonswithexistingmethods,andourmethodperformsbetterinfinalresultoftriangulation.