基于LSB的数字水印技术研究

Research on LSB Watermark Technology

信息媒体的数字化为信息的保存和提取提供了极大的方便,特别是随着互联网技术的迅猛发展,图像、语音、文本和视频等数字形式产品的传送空间不断扩大,传送时间也在不断缩短。数字化产品在发布和传送过程中很容易被侵权、盗版或随意篡改,数字产品的信息安全成为世界各国亟待解决的问题。在分析加密技术的基础上,阐述了数字图像的水印技术,研究了空域数字图像水印技术,变换域数字图像水印技术,自适应数字图像水印技术,提出了最低有效位算法改进算法。

The digitization of information media can provide great convenience for information access.Especially,with the rapid development of Internet,digital products such as image,audio,text and video,can be transmitted more rapidly in time and more widely in space.The information security problems urgently need to be solved in the world because digital products can be easily copied,pirated or juggled in the transmission process.On the base of analyzing encryption,expatiate digital image watermarking,disquisition spatial domain digital image watermarking technique,transform domain and autoadaptation digital image watermarking technique,this paper put forward the improved LSB arithmetic.