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Modified quantization index modulation watermarking adaptive to contrast masking thresholds
Wang, Guoxi1; Ma, Lihong1; Yu, Decong1; Cai, Kang1; Lu, Hanqing2
2007-02-01
发表期刊CHINA COMMUNICATIONS
卷号4期号:1页码:75-84
文章类型Article
摘要In this paper, we suggest an adaptive watermarking method to improve both transparence and robustness of quantization index modulation (QIM) scheme. Instead of a fixed quantization step-size, we apply a step-size adapted to image content in each 8 x 8 block to make a balance of robust extraction and transparent embedding. The modified step-size is determined by contrast masking thresholds of Watson's perceptual model. From a normalized crossed-correlation value between the original watermark and the detected watermark, we could observe that our method is robust to attacks of additive white Gaussian noise (AWGN), Salt and Pepper noise and Joint Photographic Experts Group (JPEG) compression than the original QIM. By taking into account the contrast insensitivity and visible thresholds of human visual system, the suggested improvement achieves a maximum embedding strength and an appropriate quantization step-size which is consistent with local values of a host signal.
关键词Vector Projected Watermarking Adaptive Quantization Index Modulation Contrast Sensitivity Masking
WOS标题词Science & Technology ; Technology
收录类别SCI
语种英语
WOS研究方向Telecommunications
WOS类目Telecommunications
WOS记录号WOS:000255148500008
引用统计
文献类型期刊论文
条目标识符http://ir.ia.ac.cn/handle/173211/9477
专题09年以前成果
作者单位1.S China Univ Technol, GD Key Lab Comp Network, Dept Elect Engn, Guangzhou 510641, Peoples R China
2.Chinese Acad Sci, Natl Lab Pattern Recognit Inst Automat, Beijing 100080, Peoples R China
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GB/T 7714
Wang, Guoxi,Ma, Lihong,Yu, Decong,et al. Modified quantization index modulation watermarking adaptive to contrast masking thresholds[J]. CHINA COMMUNICATIONS,2007,4(1):75-84.
APA Wang, Guoxi,Ma, Lihong,Yu, Decong,Cai, Kang,&Lu, Hanqing.(2007).Modified quantization index modulation watermarking adaptive to contrast masking thresholds.CHINA COMMUNICATIONS,4(1),75-84.
MLA Wang, Guoxi,et al."Modified quantization index modulation watermarking adaptive to contrast masking thresholds".CHINA COMMUNICATIONS 4.1(2007):75-84.
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