摘要
提出了一种空间域视频水印自适应检测算法,充分利用视频解码过程中提取的附加信息,根据水印信息在视频编码过程的损失程度,对重建视频图像中的每个像素计算其可信度因子,并以此实现对传统相关检测算法的改进。该算法能够在既定的水印嵌入算法条件下,进一步提高系统提取和检测水印信息的精度。
An adaptive video watermarking detection algorithm in the spatial domain is proposed. The side information obtained in the process of video decoding is utilized for calculating the confidence factor of each pixel in the reconstructed images, according to the loss of watermark information. For the same embedding method of video watermarking, this improved algorithm can further increase the precision of watermarking detection compared to the traditional algorithm.
出处
《通信学报》
EI
CSCD
北大核心
2003年第5期14-20,共7页
Journal on Communications
基金
国家自然科学基金资助项目(60202009
69972032)
