一种基于多图像融合的门限分存方案

从图像融合和分存的原理，提出一种基于多图像融合的(m,n)门限分存方法.利用一组线性无关的基于多图像融合的Bernstein多项式，得到秘密图像与载体图像融合而成的分存图. 图像重建时则在已知载体图像、分存图像和多项式组系数矩阵的条件下，通过多项式组的求解实现分存秘密图像的恢复.实验结果及分析说明，该方法可用于同时对多幅数字图像的信息隐藏，有较高的分存和隐蔽效率以及灵活选择分存变换矩阵、载体图像和公开图像的特点.

A IMAGE SHARING OF THRESHOLD BASED ON MULTI-IMAGES AMALGAMATION

In view of the principles of image amalgamation and threshold sharing, a method based on multi-images amalgamation is put forward to deal with (m,n)-threshold image sharing. A sharing map composed of secret images and carrier images is obtained by a set of linearly independent Bernstein polynomial based on multi-image amalgamation. As constructing images, the sharing secret images were recovered by solving polynomial based on the given carrier images, sharing secret images and polynomial coefficient matrix. Experimental results and analysis reveal that this method can be used for hiding information of multiple digital images, and it also has the following characteristics: high efficiency of sub-storage and concealment, high flexibility of choosing sharing transformation matrix, carrier images and public images.