DocumentCode :
1228240
Title :
Reversible Watermarking Algorithm Using Sorting and Prediction
Author :
Sachnev, Vasiliy ; Kim, Hyoung Joong ; Nam, JeHo ; Suresh, Sundaram ; Shi, Yun Qing
Author_Institution :
Center of Inf. Security & Technol., Korea Univ., Seoul, South Korea
Volume :
19
Issue :
7
fYear :
2009
fDate :
7/1/2009 12:00:00 AM
Firstpage :
989
Lastpage :
999
Abstract :
This paper presents a reversible or lossless watermarking algorithm for images without using a location map in most cases. This algorithm employs prediction errors to embed data into an image. A sorting technique is used to record the prediction errors based on magnitude of its local variance. Using sorted prediction errors and, if needed, though rarely, a reduced size location map allows us to embed more data into the image with less distortion. The performance of the proposed reversible watermarking scheme is evaluated using different images and compared with four methods: those of Kamstra and Heijmans, Thodi and Rodriguez, and Lee et al. The results clearly indicate that the proposed scheme can embed more data with less distortion.
Keywords :
data encapsulation; data reduction; error statistics; image coding; sorting; watermarking; data reduction; lossless watermarking algorithm; prediction error; reversible watermarking algorithm; sorting technique; Lossless data hiding; prediction error expansion; reversible watermarking;
fLanguage :
English
Journal_Title :
Circuits and Systems for Video Technology, IEEE Transactions on
Publisher :
ieee
ISSN :
1051-8215
Type :
jour
DOI :
10.1109/TCSVT.2009.2020257
Filename :
4811982
Link To Document :
بازگشت