An angle QIM watermarking algorithm based on Watson perceptual model

被引：4

作者：

Chen, Chuanbo ^{[1
]}

Wu, Xueli ^{[1
]}

机构：

[1] Huazhong Univ Sci & Technol, Coll Comp Sci & Technol, Wuhan 430074, Peoples R China

来源：

PROCEEDINGS OF THE FOURTH INTERNATIONAL CONFERENCE ON IMAGE AND GRAPHICS | 2007年

基金：

国家高技术研究发展计划(863计划);

关键词：

angle quantization index modulation (Angle QIM); discrete cosine transform (DCT); watermarking; Watson perceptual model; ROBUST;

D O I：

10.1109/ICIG.2007.140

中图分类号：

TP18 [人工智能理论];

学科分类号：

081104 ; 0812 ; 0835 ; 1405 ;

摘要：

In this paper, a new angle quantization index modulation (Angle QIM) watermarking algorithm is proposed Instead of embedding information by quantizing the amplitude of pixel values, Angle QIM works by quantizing the angle formed by the host-signal vector. The proposed method is based on modifying the low-mid frequency DCT coefficients imperceptibly to quantizing the angle formed by the host-signal vector. During the modulation, a theorem deduced from Watson's perceptual model is employed to restrict the modified magnitude of coefficients. Experimental results indicate that the presented watermarking method performs well in both security and robustness.

引用

页码：324 / +

页数：2

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