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- 2018
基于插值图像的可逆信息隐藏算法
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Abstract:
摘要： 为了提高可逆信息隐藏算法的容量,提出一种基于插值图像的可逆信息隐藏算法。将原始图像用最近邻插值算法放大,以放大后的图像作为载体图像进行隐藏。计算插值像素与相邻两个原始像素均值的差值,根据差值控制嵌入秘密信息的位数,根据秘密信息的数值修改插值像素实现秘密信息的隐藏。接收方提取秘密信息后,可对载密图像下采样恢复出载体图像,实现可逆信息隐藏。实验表明提出的算法可实现较大容量的信息隐藏,同时,在相同隐藏容量的情况下,具有较好的视觉效果。
Abstract: In order to improve the capacity of reversible data hiding algorithm, a new reversible data hiding algorithm based on interpolation images was proposed. The original image is enlarged with the nearest neighbor interpolation algorithm, and then the interpolation image is used as the cover image to embed the secret bits. The difference between the interpolated pixels and the original pixels are calculated and the number of the secret information is determined by the difference. The stego-image is obtained with the secret bits embedded into the interpolated pixels. After the secret information is extracted, the cover image can be recovered by down sampling the stego-image, and the reversible data hiding can be realized. Experiments result show that the proposed algorithm can achieve higher capacity and has good visual effects with the same payload than the other algorithms
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