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An Adaptive Image Watermarking Algorithm Based on HMM in Wavelet Domain

机译:基于HMM的小波域自适应图像水印算法

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摘要

An adaptive image watermarking algorithm based on HMM in wavelet domain is proposed. The algorithm is abstracted as follows: 1) the vector HMM model is employed to describe the statistical characteristic of image wavelet coefficients and the resulting HMM based detector achieves significant improvements in performance compared to the conventional correlation detector; 2) adaptive watermark embedding based on HVS analysis; 3) a novel embedding strategy which is optimized for the HMM tree structure is adopted; 4) the strategy of dynamical threshold is applied in watermark detection. High robust results are achieved against Stirmark attacks, such as JPEG compression, adding noise, median cut and filter.
机译:提出了一种基于HMM的小波域自适应图像水印算法。该算法的摘要如下:1)采用矢量HMM模型描述图像小波系数的统计特性,与传统的相关性检测器相比,基于HMM的检测器在性能上有显着提高。 2)基于HVS分析的自适应水印嵌入; 3)采用针对HMM树结构优化的新颖的嵌入策略; 4)动态阈值策略应用于水印检测。在对抗Stirmark攻击(例如JPEG压缩,添加噪声,中值截断和过滤器)时,可以获得很高的鲁棒性。

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