摘要
应用基于小波变换的数字水印技术,研究了对文本、图像、音频、视频四种主要类型的多媒体教学资源进行水印添加和提取的方法,实现了一种基于DWT的图像水印算法。以图像水印算法为基础,设计并实现了基于数字水印的的多媒体教学资源版权保护系统。结果表明,基于数字水印的多媒体教学资源版权保护的方法能更好地对教学资源的整个信息生命周期提供全程保护,是一种研究现代教育资源版权保护的有效方法。
With the application of digital watermarking technology based on the wavelet transformation＇s,studied the embed and extraction method of watermark to the four predominant type multimedia teaching resources,the text,the image,the audio frequency,the video frequency.Then proposed a new image watermark algorithm based on the DWT.Take the image watermark algorithm as the foundation,designs and has realized based on the digital watermark multimedia teaching resources copyright protective system.The result indicated that can provide the entire journey protection well based on the digital watermark＇s multimedia teaching resources copyright protection＇s method to the teaching resources entire information life cycle,it is one efficacious method on research of modern the copyright protection of education resources
出处
《计算机安全》
2011年第5期53-57,共5页
Network & Computer Security
关键词
版权保护
数字水印
视频水印
DWT
多媒体
copyright protection
digital watermark
video watermarking
DWT
multimedia
