基于迭代算法的可验证视觉密码

摘要

通过改变验证图像的分享和恢复方式,该文提出了一种基于迭代算法的可验证视觉密码方案.该方案设计专用算法分享验证图像,利用算法的迭代优化验证过程,不仅大幅减小了像素扩展度,而且显著提高了验证效率.同时,通过引入异或操作实现了验证图像的完全恢复.%By changing sharing and recovering ways of the verification image, a verifiable Visual Cryptography Scheme (VCS) based on iterative algorithm is proposed in this paper. Since the verification image is shared with special algorithms, and the verification process is optimized through iterative algorithm, the proposed scheme not only makes the pixel expansion much smaller, but also improves the checking efficiency greatly. Furthermore,verification images are perfectly recovered by the XOR operation introduced.