Advertisement
Published in:
2005 | OriginalPaper | Chapter
A Method for Deciding Quantization Steps in QIM Watermarking Schemes
Authors : Yunho Lee, Kwangwoo Lee, Seungjoo Kim, Dongho Won, Hyungkyu Yang
Published in: Embedded and Ubiquitous Computing – EUC 2005 Workshops
Publisher: Springer Berlin Heidelberg
Activate our intelligent search to find suitable subject content or patents.
Select sections of text to find matching patents with Artificial Intelligence. powered by
Select sections of text to find additional relevant content using AI-assisted search. powered by
In this paper, we propose a method for enlarging quantization steps of a QIM watermarking scheme which determines the perceptual quality and robustness of the watermarked images. In general, increasing the quantization steps leads to good robustness but poor perceptual quality of watermarked images and vice versa. However, if we choose the quantization steps considering the expected quantization results as well as the original images, we can increase both robustness and perceptual quality of the watermarked images.