抗亮度和对比度变化的鲁棒图像水印

2012 Fourth International Conference on Multimedia Information Networking and Security Pub Date : 2012-11-02 DOI:10.1109/MINES.2012.252

Gong Daofu, L. Fenlin, L. Xiangyang, Wang Ping

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引用次数: 2

摘要

亮度和对比度变化是图像处理中常见的问题，本文提出了一种基于图像边缘检测的鲁棒水印算法。首先利用Prewitt算子进行图像边缘检测。其次，水印嵌入到边缘点的梯度幅度和方向上;该算法的不可见性较好地适应了人类视觉的掩蔽效果。并且鲁棒性对边缘的稳定性也有较好的提高。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Robust Image Watermarking against Brightness and Contrast Change

The brightness and contrast changes are common image processing, so a robust watermarking algorithm against them is presented based on image edge detection in this article. Firstly Prewitt operator is used for image edge detection. Secondly watermark is embedded into the gradient amplitude and direction of the edge point. The invisibility of our algorithm is better for the masking effect of human vision. And the robustness is also better for the stability of the edge.

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2012 Fourth International Conference on Multimedia Information Networking and Security

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