中文说明：将基于小波变换的嵌入水印后的宿主图像进行压缩处理再提取灰度水印。
English Description：
The host image embedded watermark based on wavelet transform is compressed, and then the gray watermark is extracted.
The host image embedded watermark based on wavelet transform is compressed, and then the gray waterm
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中文说明：将基于小波变换的嵌入水印后的宿主图像进行压缩处理再提取灰度水印。
English Description：
The host image embedded watermark based on wavelet transform is compressed, and then the gray watermark is extracted.