Paper Info
Title
A Reversible Image Watermarking Scheme Based On Modified Integer-To-Integer Discrete Wavelet Transform And Cdma Algorithm
Abstract
This paper presents a secure and large capacity reversible watermarking scheme based on modified integer-to-integer discrete wavelet transform (iDWT) and code division multiple access (CDMA) algorithms. In this scheme, the watermark data are spread by orthogonal spreading sequence and then embedded into wavelet domain, which can only be extracted with same spreading codes and be removed after extraction to recover the original image exactly. The iDWT is modified with the method of exchanging the positions of nearby pixels to generate positive wavelet coefficients, through which the length of the spreading sequence is cut down and the embedding capacity enhanced effectively. The influence of the length of different spreading sequences on watermark capacity is discussed and optimal length of orthogonal spreading sequence is obtained to achieve balance between the watermark capacity and image distortion. Performance comparison with some state-of-art reversible watermarking schemes shows that the proposed scheme achieves higher embedding capacity while maintaining image distortion at lower level.
Year
DOI
Venue
2014
10.1007/978-3-319-19321-2_32
DIGITAL-FORENSICS AND WATERMARKING, IWDW 2014
Keywords
Field
DocType
Integer-to-integer discrete wavelet transform (iDWT), Code division multiple access (CDMA), Reversible image watermarking, Spreading sequence
Lifting scheme,Computer science,Algorithm,Watermark,Second-generation wavelet transform,Discrete wavelet transform,Cascade algorithm,Stationary wavelet transform,Wavelet packet decomposition,Wavelet transform
Conference
Volume
ISSN
Citations 
9023
0302-9743
1
PageRank 
References 
Authors
0.38
6
2
Name
Order
Citations
PageRank
Bin Ma110.38
Yun Q. Shi22918199.53