基于可见水印的课件版权保护研究

互联网络的快速发展推动了网络课程和远程教育的广泛应用。课件是一种重要的网络教学资源,为保护制作者的权益,将可见水印和可逆数据隐藏技术相结合应用于课件版权保护系统中。版权通告采用了自适应图像特性的可见水印技术,为能按需还原图像采用了基于直方图的可逆数据隐藏技术。该算法使版权水印标识在不影响图像使用的基础上清晰可见,并且可去除水印,完全恢复出原始图像。实验结果验证了该算法应用于课件版权保护的有效性。

Courseware Copyright Protection Based on Visible Watermarking

The rapid development of Internet has promoted the application of the Web class and remote education.The courseware becomes an important Internet education resource.To protect the benefit of authors,the visible watermarking and reversible data hiding technique are both combined for courseware copyright protection.An adaptive visible watermarking algorithm is used for copyright announcement by considering the characteristics of the original image,and to remove the embedded watermark,a data hiding algorithm b...