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應用細菌演算法之數位浮水印應用 = Bacterial foraging...

國立高雄大學電機工程學系碩士班

應用細菌演算法之數位浮水印應用 = Bacterial foraging for watermarkings applications

Record Type:	Language materials, printed : monographic
Paralel Title:	Bacterial foraging for watermarkings applications
Author:	林冠喻,
Secondary Intellectual Responsibility:	國立高雄大學
Place of Publication:	[高雄市]
Published:	撰者;
Year of Publication:	2009[民98]
Description:	85面圖、表 : 30公分;
Subject:	數位浮水印
Subject:	Bacterial foraging
Online resource:	http://handle.ncl.edu.tw/11296/ndltd/80972801956314529866
Notes:	參考書目：面
Notes:	指導教授：黃祥哲
Summary:	近年來，隨著網路的蓬勃發展，影像，聲音、影片、圖片等多媒體都開始以數位化的形式在網際網路流傳，因此許多問題也由此而生，非法的複製以及盜用，已經變成無法制止的地步。因此，有效的數位浮水印技術則是可以嚇阻這些不法行為的方法之一。在本篇論文中，提出一種基於細菌演算法以及離散餘弦轉換的數位浮水印系統。並且我們針對於如何在浮水印的強韌性與透明度兩個互相牴觸的特性中，找出一個平衡點。嵌入浮水印的方法是使用離散餘弦轉換並修改其相關係數，使用細菌演算法模擬細菌的找尋食物的特性來搜尋浮水印的嵌入的相關位置。在萃取出浮水印時，對應於浮水印嵌入方法，不需要原始影像即可萃取浮水印，採用本方法，可以有效的提高浮水印的強韌性以及嵌入浮水印的影像之品質。 In recent years, along with the booming application of the Internet, digital files and associated multimedia contents can be easily acquired in our daily lives. With the inherent characteristics of lossless copying and easy spreading, the intellectual property or ownerships of the multimedia contents have become a rising problem. Data hiding and watermarking techniques aiming at protecting copyright-related issues are of considerable interest in academia and industry. In this thesis, we mainly focus on improving the requirements of watermarking applications, including the watermark robustness and the invisibility in the frequency domain. Since the requirements tend to have conflicts, we employ bacterial foraging for training the watermarking algorithm and obtain the optimized solution. With the simulations presented, bacterial foraging provides a systematic way to balance the contributions by the watermarking requirements, and to offer another scope for designing an effective algorithm for watermarking.

應用細菌演算法之數位浮水印應用 = Bacterial foraging for watermarkings applications
林, 冠喻

應用細菌演算法之數位浮水印應用 = Bacterial foraging for watermarkings applications / 林冠喻撰 - [高雄市] : 撰者, 2009[民98]. - 85面 ; 圖、表 ; 30公分.
參考書目：面指導教授：黃祥哲.
數位浮水印Bacterial foraging

應用細菌演算法之數位浮水印應用 = Bacterial foraging for watermarkings applications
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