计算机工程与科学
計算機工程與科學
계산궤공정여과학
COMPUTER ENGINEERING & SCIENCE
2010年
4期
55-58
,共4页
零水印%最高有效位%鲁棒性
零水印%最高有效位%魯棒性
령수인%최고유효위%로봉성
non-watermarking%most significant bit%robustness
本文提出一种基于最高有效位(MSB)构造密钥的零水印算法,先将二值水印图像置乱并拓展为载体图像的大小,再将其像素值与载体像素的MSB进行对应比较,当比较结果为真时,用一个零矩阵来标记载体像素的位置,被标记过的零矩阵作为密钥来检测水印.由于水印信息遍布载体图像的MSB而且不改变载体图像的信息,使得算法表现出较好的抗攻击性能.实验表明了该算法的有效性.
本文提齣一種基于最高有效位(MSB)構造密鑰的零水印算法,先將二值水印圖像置亂併拓展為載體圖像的大小,再將其像素值與載體像素的MSB進行對應比較,噹比較結果為真時,用一箇零矩陣來標記載體像素的位置,被標記過的零矩陣作為密鑰來檢測水印.由于水印信息遍佈載體圖像的MSB而且不改變載體圖像的信息,使得算法錶現齣較好的抗攻擊性能.實驗錶明瞭該算法的有效性.
본문제출일충기우최고유효위(MSB)구조밀약적령수인산법,선장이치수인도상치란병탁전위재체도상적대소,재장기상소치여재체상소적MSB진행대응비교,당비교결과위진시,용일개령구진래표기재체상소적위치,피표기과적령구진작위밀약래검측수인.유우수인신식편포재체도상적MSB이차불개변재체도상적신식,사득산법표현출교호적항공격성능.실험표명료해산법적유효성.
This paper presents a non-watermarking algorithm based on the most significant bits to construct the key. Firstly, the binary watermarking image is scrambled and extended to the size of the main image.Then the value of every pixel of the watermarking image is compared with that of the corresponding MSB (Most Significant Bit) of the main image. When the compared value is true,the location of the main image is marked by a zero matrix, and the marked zero matrix is a key that can be used to detect the watermarking image later. Good performance can be achieved due to the watermarking information which is relatively in the most high bit-plane and is scattered to the whole of a main image. The experimental results show the validity of the method.
