在提出基于灰度变换图像隐藏算法的基础上，分析并比较了几种常用的图像隐藏方法及特点。
Several ways of picture hiding and their characteristics were analyzed and contrasted on the basis of picture hiding of gradation transformation.
由于小波变换所具有的一些特性非常符合图像处理的要求，使得小波变换图像编码得到了广泛关注。
Some characteristics of wavelet transform are greatly accorded with the requirement of image processing, which has caught much attention to wavelet image coding.
由于小波变换所具有的一些特性非常符合图像处理的要求，使得小波变换图像编码得到了广泛关注。
Some characteristics of wavelet transform are greatly accorded with the requirement of image processing, which has caught much attention to wavelet image coding.
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