Modified quantization index modulation watermarking adaptive to contrast masking thresholds

CASIA OpenIR > 09年以前成果

	Modified quantization index modulation watermarking adaptive to contrast masking thresholds
	Wang, Guoxi 1; Ma, Lihong 1; Yu, Decong 1; Cai, Kang 1; Lu, Hanqing2
发表期刊	CHINA COMMUNICATIONS
	2007-02-01
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
推荐引用方式 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.