基于改进小波域统计模型的安全量化水印方案

S. Rezazadeh, A. Rafiei
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引用次数: 1

摘要

本文提出了一种用于数字图像内容认证的安全半脆弱水印技术。对二值图像进行有效的加密,并嵌入水印进行篡改检测。通过对小波域块奇异值的欧氏范数进行量化指标调制,实现水印嵌入。为了避免水印图像的视觉退化,我们增强了一个模型,考虑了主图像的块统计。实验结果表明了该方法的有效性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A Secure Quantization-Based Watermarking Scheme Using An Improved Statistical Model in the Wavelet Domain
In this paper, we have proposed a secure semi-fragile watermarking technique for content authentication of digital images. A binary image is encrypted in an efficient way and then embedded as the watermark for tamper detection. The watermark is embedded by applying a quantization index modulation process on Euclidean norm of singular values of blocks in the wavelet domain. To avoid visual degradation of watermarked image, we have enhanced a model to take into consideration blocks statistics of the host image. Experimental results are presented for well known images to demonstrate effectiveness of our method.
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