计算机科学 ›› 2025, Vol. 52 ›› Issue (6A): 240900030-8.doi: 10.11896/jsjkx.240900030
刘润军1, 肖凤军2, 胡伟通2, 王旭3
LIU Runjun1, XIAO Fengjun2, HU Weitong2, WANG Xu3
摘要: 加密图像中可逆信息隐藏技术是一种用于隐蔽通信和隐私保护的重要网络安全技术,针对完全加密图像的可逆信息隐藏方案具有更可靠的安全性。然而,现有相关算法存在嵌入容量低和恢复图像品质差的问题,无法有效适用于复杂云环境。为了解决这些问题,提出了一种基于像素区间划分及预测恢复的完全加密图像可逆信息隐藏方案。图像所有者利用图像加密密钥完全加密原始图像,信息隐藏者利用信息嵌入密钥将额外信息通过像素区间划分技术嵌入到加密图像中,图像接收者可根据信息嵌入密钥无损提取嵌入的额外信息,并利用图像加密密钥及像素预测辅助实现高质量图像恢复。实验结果表明,该算法的嵌入率相比现有最优算法增长了一倍以上,且图像恢复品质也有了显著提升。
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