计算机工程与设计
計算機工程與設計
계산궤공정여설계
COMPUTER ENGINEERING AND DESIGN
2015年
8期
2064-2068
,共5页
彩色图像水印%三维离散余弦变换%关系%量化%鲁棒性
綵色圖像水印%三維離散餘絃變換%關繫%量化%魯棒性
채색도상수인%삼유리산여현변환%관계%양화%로봉성
color image watermarking%three-dimensional discrete cosine transform%relationship%quantization%robustness
针对彩色图像的版权保护应用，提出一种基于分块三维离散余弦变换的彩色图像水印方案。对彩色图像进行分块的三维离散余弦变换，嵌入水印时，对三维离散余弦变换系数的直流分量和第二分量分别采用量化和关系的方法嵌入水印信号；提取水印时，分别采用量化和关系提取算法提取水印信号并进行比较，选取相似值高的水印作为最终提取的水印信号。仿真结果表明，该算法具有较好不可感知性和抵抗多种攻击的能力，与其它相似的算法相比，具有更优越的性能。
針對綵色圖像的版權保護應用，提齣一種基于分塊三維離散餘絃變換的綵色圖像水印方案。對綵色圖像進行分塊的三維離散餘絃變換，嵌入水印時，對三維離散餘絃變換繫數的直流分量和第二分量分彆採用量化和關繫的方法嵌入水印信號；提取水印時，分彆採用量化和關繫提取算法提取水印信號併進行比較，選取相似值高的水印作為最終提取的水印信號。倣真結果錶明，該算法具有較好不可感知性和牴抗多種攻擊的能力，與其它相似的算法相比，具有更優越的性能。
침대채색도상적판권보호응용，제출일충기우분괴삼유리산여현변환적채색도상수인방안。대채색도상진행분괴적삼유리산여현변환，감입수인시，대삼유리산여현변환계수적직류분량화제이분량분별채용양화화관계적방법감입수인신호；제취수인시，분별채용양화화관계제취산법제취수인신호병진행비교，선취상사치고적수인작위최종제취적수인신호。방진결과표명，해산법구유교호불가감지성화저항다충공격적능력，여기타상사적산법상비，구유경우월적성능。
For color image copyright protection applications,a color image watermarking scheme based on three-dimensional dis-crete cosine transform (3D-DCT)was proposed.The original color image was subdivided to non-overlapping blocks,and 3D-DCT was performed on each block.During the embedded watermarking stage,quantization method and relationship method were used to embed watermarking in the DC component of the three-dimensional discrete cosine transform coefficients and second com-ponents,respectively.During the watermarking extraction stage,the watermarking signal was extracted using quantization method and relationship method separately and they were compared,the final watermarking had higher correlation value.Simu-lation results show that the algorithm has good imperceptibility and resistance ability to a variety of attacks.Compared with other similar algorithms,this algorithm performs better.
