多分存彩色图像秘密共享（2，n）方案

文献2]中提出了一种基于异或（XOR）操作的彩色图像秘密共享（2，n）方案，简单易于实现，但恢复密图的效果较差。通过分析此方案，文章提出一个多分存的彩色图像秘密共享（2，n）方案，通过给用户增加分存图像的方法改善了恢复密图的质量。实验分析表明所提方案不仅取得了很好的恢复效果，而且保持了安全性和算法的简单性。

Secret Color Images Sharing(2,n)-Threshold Scheme with Multiple Shares

A secret color images（2, n）-threshold scheme based on XOR operation is proposed in reference2]. The algorithm of this scheme is very simple and easy to implement, and however, the quality of the recovered image is not so satisfactory. In this paper, the reason of distortion is discussed first, and then a secret color images sharing（2, n）-threshold scheme with multiple shares is presented. In the scheme, more shares are distributed to participants, thus to improve the quality of secret image recovering. Experiments and analysis indicate that the proposed scheme could improve the quality of recovered image while maintains the security and simplicity of the algorithm.