计算机工程与应用 ›› 2007, Vol. 43 ›› Issue (16): 80-82.

• 学术探讨 • 上一篇    下一篇

基于漂移补偿的数字水印方法

杨定礼,严 石   

  1. 淮阴工学院 电子信息工程系,江苏 淮安 223003
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2007-06-01 发布日期:2007-06-01
  • 通讯作者: 杨定礼

Method of watermarking based on drift compensation

YANG Ding-li,YAN Shi   

  1. Department of Electronic Engineering,Huaiyin Institute of Technology,Huai’an,Jiangsu 223003,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2007-06-01 Published:2007-06-01
  • Contact: YANG Ding-li

摘要: 在压缩的视频码流中嵌入数字水印时,如果选择在I帧图像的DCT系数中嵌入数字水印,那么后面的P帧和B帧图像的质量会受到很大的影响。提出了利用新的漂移补偿方法来减小I帧图像中的数字水印对后面的P帧图像和B帧图像的影响。实验结果证明该方法明显地提高了P帧和B帧图像质量,同时所需计算量较小。

Abstract: The quality of the picture of the P frame and B frame is affected,if watermark is embedded in I frame in the compressed video MPEG-2 bit-stream.In this paper,the method of the novel drift compensation is proposed to decrease this influence.It is turned out that this method evidently improves the quality of the picture of the P frame and B frame,at the same time,the needed computation power of this method is small.