摘要
文章提出一种自适应组合域数字水印算法,混沌加密后的重要水印部分自适应嵌入载体图像DCT域的低频系数中;非重要水印则嵌入含水印图像空域的非LSB位。水印提取时不需要原始载体图像。
In this paper, an adaptive digital watermarking algorithm in combinational domain is proposed. Encrypted by chaos, the more important part of watermark inserts into the low frequency coefficients in DCT domain. The rest are inserted in non-LSB bits in spatial domain of the DCT-watermarked image. There is no need of the original host image during the detecting procedure.
出处
《信息安全与通信保密》
2006年第8期154-155,159,共3页
Information Security and Communications Privacy
关键词
空域
DCT
自适应
混沌系统
spatial domain DCT adaptive chaos system
