摘要: 提出一种基于JPEG-LS的对掌纹图像压缩的加密算法,它将JPEG-LS编码系统进行改进,增加了基于前馈反馈非线性动力学滤波器(FFNDF)的安全系统,即针对图像压缩编码最后的熵编码阶段,引入混沌系统,去除图像的空间冗余和相关冗余,以尽可能地降低图像加密对压缩的影响。对算法 进行了安全性分析。与其它混沌压缩编码加密算法进行比较的实验结果表明,提出的压缩加密算法不仅具有较高的加密效率和安全性,且计算复杂度低,对压缩性能没有影响。
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