多媒体信息的数字化,提高了信息表达的效率和准确度,而数字媒体的易于存储、复制、传播和修

改，使得数字多媒体版权盗用问题严重。数字水印技术作为版权保护和安全认证的有效工具，在快速发展的同时

得到了广泛的应用。-Digital multimedia information, improve the efficiency of expression of information and accuracy, while digital media is easy to store, copy, distribute and modify, making digital multimedia copyright piracy problem. Digital watermarking and copyright protection technology as an effective tool for security authentication, in the rapid development of the widely used.