包含了基于可移植的C语言的数字水印算法的代码。这些代码具有示范性的意义，且有一定的鲁棒性。需要安装NetPGM的程序包（用来存取pgm格式图像），然后才能在linux下面编译。NetPGM是图像文件的输入/输出软件包。可以在网上搜索得到。如果需要读取其它格式的图像，读者可以修改程序中图像存取部分的代码。对于Linux下编译程序不熟悉的可以参考相关的Linux编程书籍。-contains transplantation based on the C language digital watermarking algorithm code. With the model code of significance, there are certain robustness. NetPGM need to install the package (pgm format used to access images), which can then be compiled under Linux. NetPGM is the image file input / output package. The Internet search can be. If read other formats of images, readers can modify procedures image access part of the code. For Linux compiler can not familiar with the information related to the Linux programming books.