关键词: 图像噪声, 信息隐藏, 小波高频系数, 差分直方图

Abstract:

Since the information embedded image has different features with the noised picture, the principle of the information hiding and noise jamming image is analyzed and the image histogram model and the difference histogram model are introduced. Based on the model of the highfrequency coefficients difference histogram of the image wavelet decomposition, the variance of the highfrequency coefficients difference value is used to distinguish the image data between hiding and noise jamming, and the concrete computing judgment method is given. The experiment on the standard images shows that this method can distinguish the noise image and embedded image very well, even if their intuitionistic statistics are approximately equal.

Key words: image noise;information hiding;wavelet highfrequency coefficients;difference histogram