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科技與工程學院
圖文傳播學系
學位論文
學位論文
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http://rportal.lib.ntnu.edu.tw/handle/20.500.12235/73898
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search.filters.author.呂亞鴻
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以正交線網浮水印為基礎之個人化郵票設計之研究
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2012
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呂亞鴻
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本研究主要目的是透過正交線網浮水印加密設計,應用於個人化郵票設計中。藉由正交線網加密技術,針對圖像的亮部及暗部進行調整與修正,並透過數位半色調技術,將連續調影像分別轉換為水平及垂直線網影像,另將隱藏的資訊透過邏輯運算合成新的影像,讓隱藏資訊的網線瑕疵更少且不影響人眼辨識,達到個人化郵票設計加密效果。使用者並可使用光學輔助儀器(光柵板)於模擬輸出之浮水印上進行解密以呈現隱藏訊息。本研究的個人化郵票設計能夠達到資訊隱藏的功能,並兼具美觀性及創新性,提昇個人化郵票等有價證券之附加價值。
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