学科分类
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1 个结果
  • 简介:AllwatermarksaresharedintoshadowimagesusingVCS(VisualCryptographyScheme).Onlyonespecificshadow(asanewwatermark)isembeddedintothehostsignalandtheotheronesaredistributedtoeveryuserineachgroupasakey.Inthewatermarkingextractionprocedure,usersindifferentgroupcanobtaindifferentwatermarkbycombiningtheirshadowswiththeextractedonefromthewatermarkedsignal.Analysisandexperimentalresultsshowthatthenewwatermarkingmethodisnovel,secureandrobust.

  • 标签: 数字水印 视觉密码 VCS 阴影图像