Paper Info
Title
An improved color image watermarking scheme based on Schur decomposition.
Abstract
With the rapid development of computer technology, the copyright protection of color image is becoming a more and more urgent problem. In this paper, an improved color image blind watermarking scheme based on Schur decomposition is proposed, which is different from using the binary or gray-level image as watermark. By analyzing the 4 × 4 unitary matrix U and the upper triangular matrix D of Schur decomposition, it is found that not only the embedding column c of matrix U is decided by the column of the maximum eigenvalue of the matrix D, but also the entries between the second row the c-th column and the third row the c-th column in the matrix U have strong similarity. These properties will be used for embedding watermark and extracting watermark in the blind manner. The novelty of this paper includes: 1) Using the results features obtained by Schur decomposition to embed or extract watermark with blind manner; 2) The embedded watermark is color image which has more watermark information than random sequence, binary image or gray-level image. Experimental results show that the proposed watermarking algorithm has better performance, such as in the aspects of the invisibility, robustness, computational complexity, security, capacity etc., compared with other proposed methods considered in this work.
Year
DOI
Venue
2017
10.1007/s11042-016-4164-x
Multimedia Tools Appl.
Keywords
Field
DocType
Color image watermark, Schur decomposition, Maximum eigenvalue
Digital watermarking,Pattern recognition,Computer science,Matrix (mathematics),Binary image,Watermark,Artificial intelligence,Schur decomposition,Triangular matrix,Computer technology,Color image
Journal
Volume
Issue
ISSN
76
22
1573-7721
Citations 
PageRank 
References 
4
0.54
15
Authors
2
Name
Order
Citations
PageRank
Qingtang Su117616.90
Beijing Chen230415.72