ZHANG Li-bao, MA Xin-yue, CHEN Qi. Image zero-watermarking algorithm based on region of interest[J]. 2009, 30(S2): 117-120.DOI:
基于感兴趣区的图像零水印算法
摘要
结合ROI特性
提出一种新的水印算法。算法首先选择ROI区域
然后对图像进行小波变换并生成ROI罩
最后对ROI罩内的小波系数构造零水印。此外
新算法给出了零水印的检测算法。实验结果表明
当图像的ROI区域获得明显高于背景区域的解码质量时
新算法较其他不针对ROI的水印算法具有更好的顽健性
此外
由于采用零水印
保证了ROI中不会被加入任何干扰信息。
Abstract
Based on ROI
a new watermarking algorithm was proposed.First
ROI was selected.Then
the wavelet transform was executed and ROI mask was constructed.Finally
the zero-watermarking was designed for the wavelet coefficients in ROI mask.The experimental results show that the zero-watermarking is more robust in the new algorithm than others that are not designed for ROI when the ROI of image is decoded at higher quality than the background.Additionally
the new algorithm can ensure ROI not to be disturbed by the watermarking information because of the zero-watermarking.