CASIA OpenIR  > 09年以前成果
Robust Quantzation Index Modulation VIA Adaptive Watermarking
Wang, Guoxi1; Ma, Lihong1; Yu, Decong1; Cai, Kang1,3; Lu, Hanqing2
AbstractIn 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.
KeywordVector Projected Watermarking Adaptive Quantization Index Modulation Contrast Sensitivity Masking
WOS HeadingsScience & Technology ; Technology
Indexed BySCI
WOS Research AreaTelecommunications
WOS SubjectTelecommunications
WOS IDWOS:000260232700006
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Document Type期刊论文
Affiliation1.S China Univ Technol, Dept Elect Engn, GE Key Lab Comp Network, Guangzhou 510641, Peoples R China
2.Chinese Acad Sci, Natl Lab Pattern Recognit Inst Automat, Beijing 100080, Peoples R China
3.Guangdong Telecom, Guangzhou, Guangdong, Peoples R China
Recommended Citation
GB/T 7714
Wang, Guoxi,Ma, Lihong,Yu, Decong,et al. Robust Quantzation Index Modulation VIA Adaptive Watermarking[J]. CHINA COMMUNICATIONS,2008,5(2):40-48.
APA Wang, Guoxi,Ma, Lihong,Yu, Decong,Cai, Kang,&Lu, Hanqing.(2008).Robust Quantzation Index Modulation VIA Adaptive Watermarking.CHINA COMMUNICATIONS,5(2),40-48.
MLA Wang, Guoxi,et al."Robust Quantzation Index Modulation VIA Adaptive Watermarking".CHINA COMMUNICATIONS 5.2(2008):40-48.
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