基于音频内容的DCT域脆弱水印算法

张金全; 王宏霞

doi:10.3969/j.issn.0258-2724.2012.03.012

基于音频内容的DCT域脆弱水印算法

doi: 10.3969/j.issn.0258-2724.2012.03.012

张金全^1,2,
王宏霞^1, ,

基金项目:

国家自然科学基金资助项目(61170226,60970122)

中央高校基本科研业务费专项资金资助项目(SWJTU11CX047)

详细信息

作者简介:
张金全(1974-),男,博士研究生,研究方向为音频数字水印,E-mail:zhjq@cuit.edu.cn

通讯作者:
王宏霞(1973-),女,教授,博士,研究方向为多媒体信息安全技术、保密通信、智能信息处理, E-mail:hxwang@home.swjtu.edu.cn

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出版历程
- 收稿日期: 2011-08-22
- 刊出日期: 2012-06-25

Content-Based Fragile Audio Watermarking Algorithm in DCT Domain

ZHANG Jinquan^1,2,
WANG Hongxia^{1
, ,}

摘要

摘要: 为了实现音频文件的完整性认证,提出了一种基于内容的脆弱水印算法.对于一维序列,改变其离散余弦变换(DCT)域交流系数不会改变该序列的幅值和.基于这一性质,在音频分帧后,再对每帧分组,计算每组采样点和的绝对值,相加后得到该帧的和,将其作为该帧音频的特征,量化后转换为二进制作为水印;然后,用量化索引调制方法,通过调整每组DCT域的低频系数嵌入水印.实验表明:该算法具有很好的不可感知性;得到的含水印音频的信噪比约为80 dB;算法对添加噪声、重量化、重采样、低通滤波、MP3压缩等操作具有很强的敏感性,并且能够确定替换等恶意篡改的位置.
- 音频水印 /
- 脆弱水印 /
- 量化索引调制 /
- 离散余弦变换(DCT)
Abstract: In order to realize the integrity authentication of audio files, a content-based fragile watermarking algorithm was proposed. To an one-dimensional sequence, the modification of alternating coefficient in DCT (discrete cosine transformation) will not change the sum of the sequence. Based on this property, an audio signal is segmented into frames. Then, samples are partitioned into sections for each frame. After absolute value of the sum of all samples in each section is computed, all absolute values are added in a frame. The result is quantized as a feature of the frame, and the quantization result is converted to a binary sequence as watermark. The watermark bits are embedded by modifying low frequency coefficient in DCT of each section with the quantization index modulation (QIM) method. Experimental results show that the fragile watermarking algorithm maintains good perceptual quality, the SNR (signal-to-noise ratio) values of watermarked audios are about 80 dB, and the algorithm is sensitive against additive noise, bit resolution transformation, sampling rate change, low-pass filtering and MP3 compression. Furthermore, it can detect and localize the tampered regions effectively.
- audio watermarking /
- fragile watermarking /
- QIM (quantization index modulation) /
- DCT (discrete cosine transformation)

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参考文献(15)

王宏霞. 基于内容的自适应音频水印研究综述[J]. 西南交通大学学报,2009,44(3): 430-436. WANG Hongxia. Overview of content-based adaptive audio watermarking[J]. Journal of Southwest Jiaotong University, 2009, 44(3): 430-436

LEI Baiying, SOON I Y, LI Zhen. Blind and robust audio watermarking scheme based on SVD-DCT[J]. Signal Processing, 2011, 91(8): 1973-1984.

BHAT K V, SENGUPTA I, DAS A. An audio watermarking scheme using singular value decomposition and dither-modulation quantization[J]. Multimed Tools Appl, 2011, 52(2/3): 369-383.

王秋生,孙圣和,郑为民. 数字音频信号的脆弱水印嵌入算法[J]. 计算机学报,2002,25(5): 520-525. WANG Qiusheng, SUN Shenghe, ZHENG Weimin. The fragile watermark embedding algorithm for digital audio Signal[J]. Chinese Journal of Computers, 2002, 25(5): 520-525.

全笑梅,张鸿宾. 用于篡改检测及认证的脆弱音频水印算法[J]. 电子与信息学报,2005,27(8): 1187-1192. QUAN Xiaomei, ZHANG Hongbin. Fragile audio watermarking algorithm for telltale tamper proofing and authentication[J]. Journal of Electronics Information Technology, 2005, 27(8): 1187-1192.

赵红,沈东升,朱元辉. 一种抗裁剪的半脆弱音频水印算法[J]. 自动化学报,2008,34(6): 647-651. ZHAO Hong, SHEN Dongsheng, ZHU Yuanhui. A semi-fragile audio watermarking against shearing[J]. Acta Automatica Sinica, 2008, 34(6): 647-651.

WANG Hongxia, FAN Mingquan. Centroid-based semi-fragile audio watermarking in hybrid domain[J]. Science in China Series F-Information Sciences, 2010, 53(3): 619-633.

GULBIS M, MULLER E, STEINEBACH M. Content-based authentication watermarking with improved audio content feature extraction//Proceedings of IEEE Conference on IIHMSP'08. Harbin: IEEE, 2008: 620-623.

范明泉,王宏霞. 基于音频内容的混合域脆弱水印算法[J]. 铁道学报,2010,32(1): 118-122. FAN Mingquan, WANG Hongxia. Content-based fragile audio watermarking in hybrid domain[J]. Journal of the China Railway Society, 2010, 32(1): 118-122.

CHEN Fan, HE Hongjie, WANG Hongxia. A fragile watermarking scheme for audio detection and recovery//Proceedings of IEEE Conference on CISP'08. Sanya: IEEE, 2008: 135-138.

王秋生,孙圣和. 一种在数字音频信号中嵌入水印的新算法[J]. 声学学报,2001,26(5): 464-467. WANG Qiusheng, SUN Shenghe. A novel algorithm for embedding watermarks into digital audio signals[J]. Acta Acustica, 2001, 26(5): 464-467.

马翼平,韩纪庆. DCT域音频水印:嵌入对策和算法[J]. 电子学报,2006,34(7): 1260-1264. MA Yiping, HAN Jiqing. Audio watermark in DCT domain: strategy and algorithm[J]. Acta Electronica Sinica, 2006, 34(7): 1260-1264.

ZENG Gaorong, QIU Zhengding. Audio watermarking in DCT embedding strategy and algorithm//International Conference on Signal Processing(ICSP). Beijing: , 2008: 2193-2196.

CHEN B, WORNELl G W. Quantization index modulation: a class of provably good methods for digital watermarking and information embedding[J]. IEEE Trans. on Information Theory, 2001, 47(4): 1423-1443.

刘九芬. 小波理论及其在图像压缩和数字水印中的应用. 杭州:浙江大学,2001.

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