基于GLM技术的PVD隐写方法的容量增强
Capacity Enlargement Of The PVD Steganography Method Using The GLM Technique
摘要:
在大多数隐写方法中,容量的增加会导致隐写图像质量的下降,因此本文提出了一种结合像素值差分和灰度级修改的混合隐写方案,该方案可以在不影响隐写图像质量的前提下隐藏更多的信息。实验结果表明,该方法具有较大的容量,其结果是不可感知的。与原PVD方法相比,质量指标平均下降2% dB,而容量提高25%左右。
英文摘要:
In most steganographic methods, increasing in the capacity leads to decrease in the quality of the stego-image, so in this paper, we propose to combine two existing techniques, Pixel value differencing and Gray Level Modification, to come up with a hybrid steganography scheme which can hide more information without having to compromise much on the quality of the stego-image. Experimental results demonstrate that the proposed approach has larger capacity while its results are imperceptible. In comparison with original PVD method criterion of the quality is declined by 2% dB averagely while the capacity is increased around 25%.
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