期刊名称：Journal of King Saud University @?C Computer and Information Sciences
印刷版ISSN：1319-1578
出版年度：2017
卷号：29
期号：3
页码：288-294
DOI：10.1016/j.jksuci.2016.02.005
出版社：Elsevier
摘要：A robust and transparent watermarking scheme based on contourlet transform and quantization index modulation is proposed in this paper. In proposal algorithm, after taking contourlet, the coefficients are divided into three quadrants by using the symmetric property of the contourlet coefficients, then the angle coefficients are modulated for each of three points. The experimental results revealed that if the information of the image is utilized to determine the watermark and by using quantization index modulation properties, a higher robustness and more effective imperceptibility in proposed algorithm are achieved.
关键词：Contourlet transform
; Digital watermarking
; Lagrange method
; Quantization index modulation
