一种新的基于非均匀三角分割的图像零水印方案

JinXin Fan, K. U
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引用次数: 2

摘要

提出了一种基于非均匀三角分割(NTP)的时域零水印算法。NTP是一种图像表示方法,在设定的控制误差下,通过计算二元多项式来表示每个三角形区域的像素值。计算每个$8\ × 8$区域内三角形的个数并记录为特征矩阵,通过Arnold置乱方法将其映射到二进制水印置乱中,以提高算法的安全性。特征矩阵和置乱后的二值水印被存储为零水印。实验结果表明,该算法对JPEG压缩、旋转、高斯噪声和椒盐噪声等攻击具有较强的鲁棒性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A Novel Image Zero-Watermarking Scheme Based on Non-Uniform Triangular Partition
In this paper, a novel time-domain zero-watermarking algorithm based on Non-Uniform Triangular Partition (NTP) is proposed. NTP is an image representation method in which the bivariate polynomials are calculated and used to represent the pixel values in each triangular region under a set control error. The number of triangles in each $8\times 8$ region is counted and recorded as a feature matrix which will be mapped to a binary watermark scrambling by the Arnold scrambling method to enhance the security of the algorithm. The feature matrix and the scrambled binary watermark are stored as zero watermarks. Experimental results show that the proposed algorithm is robust to various attacks, such as JPEG compression, rotation, Gaussian noise and salt and pepper noise.
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