This paper introduces the application of electronic watermark in presswork anti-imitation. There are two parts: creating and embedding the electronic watermark. The approach is to hide the watermark which is formed by...This paper introduces the application of electronic watermark in presswork anti-imitation. There are two parts: creating and embedding the electronic watermark. The approach is to hide the watermark which is formed by chaos sequence used logistic algorithms into a color image, using the theory of visual sensitivity difference towards concolorous light. The other is the intellectualizing electronic watermark test device, which contains charge coupled device array and digital signal processing processor. This low cost test device together with electronic watermark printed on press products formed a sophisticated technical system of anti-imitation on presswork. The method and application system have been tested and the Anti-imitation effect is good.展开更多
文摘This paper introduces the application of electronic watermark in presswork anti-imitation. There are two parts: creating and embedding the electronic watermark. The approach is to hide the watermark which is formed by chaos sequence used logistic algorithms into a color image, using the theory of visual sensitivity difference towards concolorous light. The other is the intellectualizing electronic watermark test device, which contains charge coupled device array and digital signal processing processor. This low cost test device together with electronic watermark printed on press products formed a sophisticated technical system of anti-imitation on presswork. The method and application system have been tested and the Anti-imitation effect is good.
