使用可逆水印保护生物特征图像
Securing Biometric Images using Reversible Watermarking
摘要:
生物识别安全是一个快速发展的领域。保护生物特征数据非常重要,因为它可能被攻击者滥用。为了提高生物特征数据的安全性,有不同的方法,其中水印被广泛接受。可逆水印技术是这一领域的一个新的重要发展,它可以完全恢复原始图像,并且可以检索水印。但可逆水印在生物特征识别中的应用还没有得到充分的研究。可逆水印保持高质量的生物特征数据。提出了一种基于旋转替换LSB的生物特征图像可逆水印算法。PSNR是用于生物特征数据质量测量的常规方法。在本文中,我们还表明,SSIM指数是一个更好的替代有效的质量评估可逆水印的生物特征数据通过比较与众所周知的可逆水印方案,使用差分扩展。
英文摘要:
Biometric security is a fast growing area. Protecting biometric data is very important since it can be misused by attackers. In order to increase security of biometric data there are different methods in which watermarking is widely accepted. A more acceptable, new important development in this area is reversible watermarking in which the original image can be completely restored and the watermark can be retrieved. But reversible watermarking in biometrics is an understudied area. Reversible watermarking maintains high quality of biometric data. This paper proposes Rotational Replacement of LSB as a reversible watermarking scheme for biometric images. PSNR is the regular method used for quality measurement of biometric data. In this paper we also show that SSIM Index is a better alternate for effective quality assessment for reversible watermarked biometric data by comparing with the well known reversible watermarking scheme using Difference Expansion.
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