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BuKePrinting >> knowledge >> 數字水印技術的基本特徵【步殼印刷​】

數字水印技術的基本特徵【步殼印刷​】

From:Buke printing factory of China | Author:China Bukeprinting factorybook0755 | Published time: 2023-03-02 | 20 Views | Share:
數字水印技術的基本特徵【步殼印刷​】

數字水印技術的基本特徵【步殼印刷】


數字水印過程是向被保護的數字對象（如靜止圖像、視頻、音頻等）中嵌入某些能夠證明版權歸屬或跟蹤侵權行為的信息（如作者的序列號、公司標志、有意義的文本等）與傳統加密系統不同的是，數字水印技術應用的主要目的並不是限制對媒體的訪問，而是確保媒體中水印不被改變或消除，從而可以判別對象是受到保護，監視被保護數據的傳播、真偽鑒別和非法拷貝、解決版權糾紛，並提供相應的證據。此外，也可用於保密通信和隱含信息標註等

依據所嵌入的主媒體不同。數學水印主要可分為圖像水印音頻水印、視頻水印、文本水印和網絡水印等。從圖像處理的角度看，嵌入水印可以視為在強背景（原始圖像）下疊加一個弱信號（水印），由於人的視覺系統解析度受到一定的限制，只要疊加的弱信號的幅度低於一定的值，人的視覺系統就無法感覺到信號的存在。因此，通過對原始圖像做定的調整，就有可能在不改變視覺效果的情況下入一些信息。一極而音，數字水印應具有以下基本特徵

數字水印技術的基本特徵【步殼印刷】

數字水印技術的基本特徵【步殼印刷】

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