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科技與工程學院
圖文傳播學系
教師著作
教師著作
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http://rportal.lib.ntnu.edu.tw/handle/20.500.12235/31264
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search.filters.author.周遵儒
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search.filters.author.李俊逸
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search.filters.author.王希俊
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search.filters.subject.Data hiding
1
search.filters.subject.CMYK color model
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search.filters.subject.CMYK色彩模式
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search.filters.subject.Digital watermark
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search.filters.subject.Dot area
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2004
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印刷影像於多重色版加密之浮水印技術
(
國立臺灣師範大學圖文傳播學報編審委員會
,
2004-12-01
)
李俊逸
;
周遵儒
;
王希俊
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本研究針對印刷影像的特性,提出一個新的數位浮水印加密技術,簡稱為多重色版浮水印技術(Multi-channel Watermarking Technique, MCWT)。MCWT可以將圖樣或文字隱藏在印刷影像的多重色版中,並且實際輸出到紙張上。解密時只需使用設計過的光柵透鏡便可直接觀察到所隱藏的資訊,不用經過複雜的計算。實驗結果顯示在青色及洋紅色版中15至30百分比網點面積為最佳的加密條件,同時依相對應的網屏角度來調整網點位置可以獲得較良好的解密效果。
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