CAJ | 학술논문

针对目前半脆弱水印算法在篡改定位和篡改恢复性能方面存在的不足，本文提出了一种高精度图像认证的半脆弱双水印算法。该算法利用认证水印对图像进行认证、定位篡改，利用恢复水印重构被篡改图像。实验结果证明，该算法对图像具有很好的篡改定位能力，并能有效地恢复篡改内容。
침대목전반취약수인산법재찬개정위화찬개회복성능방면존재적불족，본문제출료일충고정도도상인증적반취약쌍수인산법。해산법이용인증수인대도상진행인증、정위찬개，이용회복수인중구피찬개도상。실험결과증명，해산법대도상구유흔호적찬개정위능력，병능유효지회복찬개내용。
Concerning the shortage of the tamper recovery performance in the existing semi-fragile watermarking algorithm, the authors propose a precise two-watermarking algorithm. The algorithm uses the authentication watermarking for image authentication and tamper location; the recovery watermark is tampered image reconstruction. The simulation results show that the proposed algo-rithm has precise tamper localization, and can effectively recover the tampered content.