摘要
在一般水印研究的基础上,提出了一种基于离散小波变换(DWT)的双彩色图像水印算法(DCIW).通过不同色彩空间的相互转换,利用二维DWT变换对图像进行多尺度分解,将彩色数字水印图像植入彩色图像中,并通过滤波过程,能将彩色水印图像完整地抽取出来.通过多项实验证明,该算法对剪切、有损压缩、平滑、放缩等操作均具有较强的鲁棒性.
Digital watermarking techniques have been proposed as an effective way to protect copyright of multimedia data. From the study of general watermarking, a new algorithm of dual color images watermarking (DCIW) is presented to hide color watermark image into color images by multi_resolution wavelet decomposition . Several experiments show the good robustness of this algorithm to the common image processing,such as cropping, image compression, smoothing, zooming and so on.
出处
《哈尔滨工程大学学报》
EI
CAS
CSCD
2002年第5期97-101,共5页
Journal of Harbin Engineering University
