摘要
提出了1种将灰度图像(即二维水印)嵌入到原始音频中的新数字水印算法.该算法具有以下特点:⑴引入快捷而无损的整型小波变换理论,降低了舍入误差,提高了数字水印的嵌入与检测速度;⑵采纳分段变换及整体修改策略,增强了数字水印嵌入的稳定性;⑶首次以灰度图像作为数字水印,不仅数据容量大,而且更具层次感和多样性;⑷以保证透明性和鲁棒性的良好平衡为前提,实现了数字水印的盲检测.仿真实验表明:所提出的算法不仅具有较好的透明性,而且对诸如重新采样、重新量化、低通滤波、MP3压缩、叠加噪声等攻击均具有较好的鲁棒性.
In this paper, a new 2-dimension audio watermarking algorithm based on integer wavelet transform is presented, in which the gray image （2-dimension digital watermark） can be embedded into the host audio signal. The features of the proposed algorithm are as follows： （1）Integer wavelet transform theory is utilized to solve round-off error problem and to lower computation complexity. （2） The strategy of segment transform and the whole wavelet coefficients modification are adopted to improve the robustness of the digital watermark. （3）The gray image is embedded to enlarge the watermark volume. （4）The algorithm can extract the watermark without the help from the original digital audio signal . Experimental results show that the proposed watermarking scheme is inaudible and robust against various signal processing such as re-sampling, re-quantifying, low pass filtering, MP3 compression, and noising adding.
出处
《辽宁师范大学学报（自然科学版）》
CAS
北大核心
2005年第3期297-301,共5页
Journal of Liaoning Normal University:Natural Science Edition
基金
辽宁省自然科学基金资助项目(20032100)
信息安全国家重点实验室开放基金资助(03-02)
关键词
音频水印
整型小波
灰度图像
audio watermarking
integer wavelet
gray image
