一种针对彩色图像的大容量信息隐藏算法

An Information Hiding Method with High Capacity for Color Images

文章提出了一种在彩色BMP图像中嵌入大容量信息的NLMB-DM算法(非线性多比特抖动调制,Non-linear Multi-bit Dither Modulation),并针对JPEG压缩对算法进行了改进。实验证明,该算法均具有较大的嵌入容量、较好的不可观测性和较小的误比特率,通过设定适当的参数矩阵,该算法在抵抗JPEG压缩的情况下也能有较大的嵌入容量。

An information hiding method called NLMB-DM method（Nonlinear Multi-bit Dither Modulation） algorithm is proposed, which can embed information into color images with high capacity. The results show that this method is of the properties of high capacity, good imperceptibility and low bit error rate. Furthermore, if the parametric matrices are properly chosen, the capacity of this method is still high even though the image is compressed by using JPEG.