基于图像水印的svd算法嵌入。带有嵌入提取，攻击。基本是个完整的程序。各种备注表明清晰。方便使用者学习。-SVD algorithm based on image watermarking. With embedded extraction, attack. Basic is a complete program. Various notes show clear. Convenient user learning.

一段简单有效使用的数字水印嵌入的实现，简单有效(A useful watermark program ithink)

基于svd的音频水印，加噪、滤波检验鲁棒性(Audio watermarking based on SVD, check the robustness of denoising and filtering)

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