Title :
A Robust Watermark Algorithm for JPEG2000 Images
Author :
Gao Hai-ying ; Liu Guo-qiang ; Li Xu ; Xu, Li
Author_Institution :
Inf. Sci. Technol. Inst., Zhengzhou, China
Abstract :
In order to protect the copyright of JPEG2000 images, a robust watermark algorithm for JPEG2000 images is proposed. In this algorithm, watermark information is embedded by modifying the wavelet coefficients in pairs after quantization of the original image. On the precondition of robustness, the change is little by especially dealing with wavelet coefficients. Experiment results show that the algorithm has the character of transparency and is robust to common image processing operations such as compressing transition, adding noise, sharping and cutting.
Keywords :
image coding; watermarking; wavelet transforms; JPEG2000 image; copyright protection; image processing; image quantization; robust watermark algorithm; wavelet coefficient; Image coding; Information science; Information security; Noise robustness; Quantization; Resists; Transform coding; Watermarking; Wavelet coefficients; Wavelet transforms; JPEG2000 image; robustness; transparency; wavelet coefficients;
Conference_Titel :
Information Assurance and Security, 2009. IAS '09. Fifth International Conference on
Conference_Location :
Xian
Print_ISBN :
978-0-7695-3744-3
DOI :
10.1109/IAS.2009.135
