微型机与应用
微型機與應用
미형궤여응용
MICROCOMPUTER & ITS APPLICATIONS
2013年
21期
29-31,34
,共4页
数字双水印%版权保护%完整性认证
數字雙水印%版權保護%完整性認證
수자쌍수인%판권보호%완정성인증
dual digital watermarking%copyright protection%integrity certification
针对彩色图像版权保护和完整性认证问题，提出了一种基于颜色分量选取的彩色图像数字双水印算法。水印嵌入前对 DCT 系数进行量化，并在 DCT 分块中频系数中嵌入用于版权保护的鲁棒水印，在低频系数中嵌入用于检测篡改的半脆弱水印。仿真实验表明，该算法能较好地标示版权和检测篡改。
針對綵色圖像版權保護和完整性認證問題，提齣瞭一種基于顏色分量選取的綵色圖像數字雙水印算法。水印嵌入前對 DCT 繫數進行量化，併在 DCT 分塊中頻繫數中嵌入用于版權保護的魯棒水印，在低頻繫數中嵌入用于檢測篡改的半脆弱水印。倣真實驗錶明，該算法能較好地標示版權和檢測篡改。
침대채색도상판권보호화완정성인증문제，제출료일충기우안색분량선취적채색도상수자쌍수인산법。수인감입전대 DCT 계수진행양화，병재 DCT 분괴중빈계수중감입용우판권보호적로봉수인，재저빈계수중감입용우검측찬개적반취약수인。방진실험표명，해산법능교호지표시판권화검측찬개。
With regard to the problem of color-image copyright protection and integrity of certification , this paper proposes a dual watermarking algorithm based on the color components selection of digital color-image. DCT and quantization is performed to each block before the embedding of watermark, and robust watermark is embedded in the intermediate frequency coefficients of the DCT block for copyright protection, semi-fragile watermarking is embedded in the low-frequency coefficients for tamper detection. Simulation results show that the algorithm can identify the copyright and detect the tamper.
