Computer Engineering and Applications ›› 2007, Vol. 43 ›› Issue (16): 80-82.
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YANG Ding-li,YAN Shi
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杨定礼,严 石
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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.
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。
YANG Ding-li,YAN Shi. Method of watermarking based on drift compensation[J]. Computer Engineering and Applications, 2007, 43(16): 80-82.
杨定礼,严 石. 基于漂移补偿的数字水印方法[J]. 计算机工程与应用, 2007, 43(16): 80-82.
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