This paper proposes a multi-image-based reversible data hiding method using a rhombus magic matrix. It takes a pixel pair as a position coordinate of a $256\times 256$ modulus function matrix and extracts a 5-order rhombus matrix. It first embeds a 5-ary secret digit by producing three shadow pixel pairs which satisfies the predefined distance condition. Then it embeds a 6-ary secret digit by permuting the three shadow pixel pairs and assigning them to three ordered shadow images. Third, it embeds another 5-ary secret digit by modifying the pixel pair within a 3-order rhombus magic matrix in a shadow image. The receiver can extract the secret data and recover the original cover image when obtaining all shadow images. It also introduces a new application scenario for hierarchical security data transmission. The experimental results and analysis show that the proposed security scheme provides high embedding capacity with good visual quality of shadow images.

提出了一种基于菱形魔术矩阵的基于多图像的可逆数据隐藏方法。它以像素对作为像素的位置坐标$256\times 256$模函数矩阵并提取一个5阶菱形矩阵。它首先通过产生三个满足预定距离条件的阴影像素对来嵌入5进制秘密数字。然后，通过排列三个阴影像素对并将它们分配给三个有序阴影图像，来嵌入6进制秘密数字。第三，它通过修改阴影图像中3阶菱形魔术矩阵内的像素对来嵌入另一个5进制秘密数字。当获得所有阴影图像时，接收者可以提取秘密数据并恢复原始封面图像。它还介绍了用于分层安全性数据传输的新应用场景。实验结果和分析表明，所提出的安全方案具有较高的嵌入能力和良好的阴影图像视觉质量。