多载体图像分存隐写算法研究

摘要

This paper proposes a cover image sharing steganographic algorithm based on the Bernstein polynomial for the problem of small steganography capacity and poor security of image sharing. It constructs image sharing steganographic model, describes the properties of Bernstein polynomial and proves sharing principle. Algorithms of embedding and extraction are given, experiments of image sharing steganography and anti-attack are completed. Experimental result and analysis show that the algorithm increases embedding capacity, reduces the perceived quality of cover image and improves security of secret information.%针对图像分存隐写容量小、安全性差的问题,提出一种基于Bernstein多项式的载体图像分存隐写算法.构建图像分存的隐写模型,分析Bernstein多项式性质并证明图像分存原理,并给出隐秘信息的嵌入与提取算法.实验结果表明,该算法能增大隐写容量,抵抗随机剪切攻击和加噪攻击.