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基于人眼视觉系统的自适应量化数字水印算法研究
引用本文:王向阳,杨红颖,陈利科.基于人眼视觉系统的自适应量化数字水印算法研究[J].小型微型计算机系统,2005,26(9):1525-1529.
作者姓名:王向阳  杨红颖  陈利科
作者单位:1. 辽宁师范大学,计算机与信息技术学院,辽宁,大连,116029
2. 中国科学院,软件研究所,信息安全国家重点实验室,北京,100039
基金项目:信息安全国家重点实验室开放基金(03-02)资助;辽宁省自然科学基金(20032100)资助.
摘    要:提出了一种将彩色水印图像嵌入到原始彩色功载体图像中的新算法。首先,利用DCT静态图像压缩技术,将彩色水印图像编码成一维二进制序列并进行随机置乱;然后将原始彩色载体图像分解为R、G、B三个彩色分量并分别实施小波变换,进而结合视觉感知特性自适应确定水印嵌入位置;最后结合人眼视觉系统(掩蔽特性及对颜色的感知特性)确定量化间隔,并通过全新的量化处理过程完成水印信息的白适应嵌入,仿真实验表明:该数字水印嵌入方案不仅具有较好的透明性,而且对诸如叠加噪声、JPEG压缩、平滑滤波、几何剪切、图像增强、马赛克效果等攻击均具有较好的鲁棒性.

关 键 词:数字水印  彩色图像  人眼视觉系统  自适应量化
文章编号:1000-1220(2005)09-1525-05
收稿时间:2004-03-16
修稿时间:2004-03-16

New Color Image Watermarking Based on Adaptive Quantization
WANG Xiang-yang,YANG Hong-ying,CHEN Li-ke.New Color Image Watermarking Based on Adaptive Quantization[J].Mini-micro Systems,2005,26(9):1525-1529.
Authors:WANG Xiang-yang  YANG Hong-ying  CHEN Li-ke
Abstract:A new color image watermarking algorithm based on adaptive quantization is proposed in this paper, in which a meaningful color image can be embedded into color digital image. First, the color digital watermark is converted into binary sequence by still image compression and permutation. Second, the color components(R,G,B) are performed by discrete wavelet decomposition, and the embedded location is identified according to HVS. Finally, the binary sequence is embedded into color components(R,G,B) in the DWT domain by using the technique of adaptive quantization. Experimental results show that the proposed watermarking scheme is invisible and robust against various signal processing such as cropping, compression, filtering, noise adding, image enhancement, and mosaic.
Keywords:digital watermark  color image  human visual system (HVS)  adaptive quantization
本文献已被 CNKI 维普 万方数据 等数据库收录!
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