scholarly journals A Fragile Watermarking Scheme for Image Authentication with Tamper Localization Using Integer Wavelet Transform

2009 ◽  
Vol 5 (11) ◽  
pp. 831-837 ◽  
Author(s):  
P. MeenakshiD ◽  
M. Venkatesan ◽  
K. Duraiswamy
Keyword(s):  
Wavelet Transform ◽  
Image Authentication ◽  
Fragile Watermarking ◽  
Integer Wavelet Transform ◽  
Tamper Localization ◽  
Integer Wavelet ◽  
Watermarking Scheme

scholarly journals Wavelet based Reversible Image Watermarking with Logistic Encryption for Health Informatics Systems

2019 ◽  
Vol 8 (2S11) ◽  
pp. 3567-3570
Keyword(s):  
Wavelet Transform ◽  
Execution Time ◽  
Health Informatics ◽  
Binary Data ◽  
Image Watermarking ◽  
Reversible Watermarking ◽  
Integer Wavelet Transform ◽  
Integer Wavelet ◽  
Reversible Image Watermarking ◽  
Watermarking Scheme

Health Informatics systems preserves the patient’s digital records. Two techniques that help in this process are watermarking and encryption. In this paper a reversible image watermarking scheme with logistic encryption is presented. The reversible watermarking is utilizing the concept of integer wavelet transform. The image is divided into sub bands and then the binary data is hidden in these sub bands. The watermarked wavelet sub bands are passed through logistic encryption module which scrambles the coefficients. These coefficients are then sent to inverse wavelet transform for image reconstruction. This process helps encrypt the image though spectral scrambling, thus resulting in faster and better encryption. The proposed algorithm outperforms the exiting algorithms in terms of execution time and the level of encryption.

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