摘要
提出一种彩色水印算法,将水印图像经过旋转变换分别嵌入载体图像的多个彩色分量DCT系数中,嵌入位置选择考虑人眼的视觉特性;对多个水印提取结果进行交叉验证,提高水印提取成功率。实验表明,算法在确保不可见性的基础上,对鲁棒性有较大提升。
A color watermark algorithm was proposed.Watermark image after rotation transform was embedded in DCT coefficient of three color components of carrier image,and selection of embedding posi-tions depends on the human visual characteristics.The extraction results were cross-validated.And the algorithm increased success rate of extraction.The experimental results show that the algorithm is of good invisibility and strength in robustness.
出处
《河北北方学院学报（自然科学版）》
2015年第2期32-35,共4页
Journal of Hebei North University:Natural Science Edition
关键词
图像置乱
离散余弦变换
鲁棒性
数字水印
digital image scrambling
discrete cosine transform
robustness
digital watermarking
