【摘要】 本文给出了一种改进的基于DCT域的信息隐藏方法,在一定信息隐藏容量和较好载体图像视觉效果的前提下,能有效地抵抗基于IQM的统计分析方法。该方法把秘密信息隐藏在图像DCT域的低频区域,并对隐藏信息后的DCT系数做伪随机处理,以保持原图像的噪声分布。该方法已在计算机上进行了模拟,获得了较好的效果。更多还原

【Abstract】 In this paper, an improved steganographic scheme that can effectively resist IQM analysis with ensuring message capability and without sacrificing the perceptual quality of the cover image is described .In the method, the secret data will be embedded in the low-frequency part of the DCT coefficients and the embedded DCT coefficients will be added with redundant Gaussian-like noise to keep the noise distribution of the stego-image.This method has been simulated and gets better results.更多还原