Digital Image Processing

Open Access Open Access  Restricted Access Subscription Access
Open Access Open Access Open Access  Restricted Access Restricted Access Subscription Access

A Fragile Watermarking Algorithm for Strict Image Authentication in the Wavelet Domain


Affiliations
1 Electronics and Telecommunication Department, G.H. Raisoni Institute of Engineering and Technology for Women, 37-39 Shradha Park Hariganga, Higna-Wadi Link Road, Nagpur, Maharashtra, India
2 Walchand College of Engineering, Sangli, Maharashtra, India
     

   Subscribe/Renew Journal


A fragile watermarking algorithm which is based on watermark scrambling in the wavelet domain is discussed in this paper. In the proposed algorithm, chaotic signals are generated using logistic mapping and are used for scrambling the original watermark. The initial values of logistic mapping are taken as private keys. The host image is decomposed into four bands using integer wavelet transform; and the scrambled watermark is embedded in the low frequency band. Any modification made to the original image is reflected in the watermark.

Keywords

Integer Wavelet Transform, Fragile Watermarking, Logistic Mapping.
User
Subscription Login to verify subscription
Notifications
Font Size

Abstract Views: 323

PDF Views: 2




  • A Fragile Watermarking Algorithm for Strict Image Authentication in the Wavelet Domain

Abstract Views: 323  |  PDF Views: 2

Authors

U. M. Gokhale
Electronics and Telecommunication Department, G.H. Raisoni Institute of Engineering and Technology for Women, 37-39 Shradha Park Hariganga, Higna-Wadi Link Road, Nagpur, Maharashtra, India
Y. V. Joshi
Walchand College of Engineering, Sangli, Maharashtra, India

Abstract


A fragile watermarking algorithm which is based on watermark scrambling in the wavelet domain is discussed in this paper. In the proposed algorithm, chaotic signals are generated using logistic mapping and are used for scrambling the original watermark. The initial values of logistic mapping are taken as private keys. The host image is decomposed into four bands using integer wavelet transform; and the scrambled watermark is embedded in the low frequency band. Any modification made to the original image is reflected in the watermark.

Keywords


Integer Wavelet Transform, Fragile Watermarking, Logistic Mapping.