一种改进的基于NSCT域特征的图像水印方案

Liu Yang, B. Guo, Jianmin Lv
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引用次数: 2

摘要

本文提出了一种基于尺度不变特征变换(SIFT)的改进鲁棒图像水印方案。水印嵌入到从原始图像中提取的局部区域中。在嵌入过程中,初始区域被分割成若干个面积相同的圆形子区域,每个水印位被嵌入到一个子区域中。此外,该算法被嵌入到非下采样Contourlet变换(NSCT)域中,增强了水印的鲁棒性。实验结果证明了该方案的有效性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A Modified Feature Based Image Watermarking Scheme in NSCT Domain
In this article, we present a modified robust image watermarking scheme based on the scale-invariant feature transform (SIFT). The watermark is embedded into some local regions extracted from the original image. During embedding, the initial region is divided into some cirque sub-regions with the same area, and each watermark bit is embedded into one sub-region. Besides, it is embedded in the Non-subsampled Contourlet Transform (NSCT) domain to enhance watermark robustness. Experimental results have demonstrated the efficiency of the proposed scheme.
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