摘要： 分析了一种小波域数字水印算法，利用人类视觉模型对算法进行了改进。选取一幅有实际意义的二值图像作为水印，在对原始图像进行多级小波分解后，通过修改中频系数来进行水印嵌入。实验证明嵌入水印后的图像具有更好的隐蔽性，并且对JPEG压缩、图像添加高斯噪声、中值滤波等图像处理操作具有很强的鲁棒性。
关键词:
数字水印,
人类视觉系统,
离散小波变换
Abstract: This paper analyzes a digital watermark in wavelet domain and improves it with the human visual model. The watermark is a meaningful binary image. It selects the wavelet coefficients based on HVS, and then the coefficients is modified to embed the watermark. It is improved that the processed image has better transparency, robustness to JPEG compression, additive noise and filter etc.
Key words:
Digital watermark,
Human visual system,
Discrete wavelet transform
董 彬;林小竹;徐 凤;. 基于人类视觉系统的小波域数字水印算法[J]. 计算机工程, 2006, 32(24): 138-140.
DONG Bin; LIN Xiaozhu; XU Feng;. Algorithm of Digital Watermark in Wavelet Domain Based on Human Visual System[J]. Computer Engineering, 2006, 32(24): 138-140.