To obtain two values of the watermark,watermark extraction makes a good use of the nature of of binary images.
水印提取时,充分利用二值图象的二值性获取水印。
参考来源 - 基于变换域的数字水印算法的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
The watermark extraction used a public key corresponding to the private key in embedding procedure.
水印提取过程中使用与嵌入过程中私钥相对应的公钥提取水印信息。
The algorithm mainly consists of two basic subroutines: watermark embedding and watermark extraction and detection.
算法包括水印嵌入和水印提取与检测两个部分。
By making use of human sight property in wavelet domain, a binary image watermark algorithm without using the original image in the watermark extraction has been presented.
利用小波变换域中人眼的视觉特性，提出了一种提取水印时不需要原始图像的数字图像水印算法。
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