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基于数字全息和小波分析的数字水印

于 2022-07-16 发布 文件大小:34.21 kB
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代码说明:

基于光学傅里叶变换和小波变换的数字水印算法。首先将水印图像进行数字全息处理,然后对宿主图像进行小波变换,为了提高图像的峰值信噪比,较全息处理后水印图像置于宿主图像HH系数中。逆变换时,对含水印图像首先进行小波变换,然后取HH系数,进行反傅里叶变换,提取出水印图像。

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