该文档说明是提供业务运行状况可见性的工具，并为新员工提供有关业务如何运作的教育。
This documentation is a tool that provides visibility into what the business is doing and educates new employees about how the business operates.
实验结果表明，该算法具有不可见性，对于通常的图像失真具有较好的鲁棒性，说明最低频成分并不是水印的禁区。
Experimental results show the algorithm is invisible and robust to certain common distortions. Thus the lowest frequency component is not prohibition for watermarking.
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