能区分图像内容或水印篡改的自恢复脆弱水印

分析了现有算法的缺陷,提出了一种能有效区分图像内容或水印篡改的自恢复安全脆弱水印算法.该方案利用检测水印实现篡改定位和篡改区分的功能,采用恢复水印恢复被篡改的图像内容.理论分析和实验仿真均表明,所提出的算法具有很好的篡改区分、篡改定位和篡改恢复的能力,能够抵抗同步伪造攻击和密钥分析攻击.

Fragile Watermarking Scheme with Abilities of Self-restoration and Discrimination of Tampers on Image Content or Watermark

Based on the fact that the current fragile watermarking scheme with the ability of tamper discrimination can not discriminate tampers effectively,a novel fragile watermarking scheme with the abilities of self-restoration and discrimination of tampers on image content or watermark was proposed.In this scheme,the authentication watermark is used to localize and discriminate tampers,and the resumptive watermark is utilized to resume the tampered image content.Theoretical analysis and experimental simulation show that the proposed scheme has good abilities of tamper discrimination,tamper localization and tamper restoring,even more the ability of resisting synchronization counterfeit attack and key analysis attack.