A Semi-Fragile Lossless Digital Watermarking Scheme Based on Integer Wavelet Transform

2006 ◽  
Vol 16 (10) ◽  
pp. 1294-1300 ◽  
Author(s):  
D. Zou ◽  
Y.Q. Shi ◽  
Zhicheng Ni ◽  
Wei Su
Keyword(s):  
Wavelet Transform ◽  
Digital Watermarking ◽  
Integer Wavelet Transform ◽  
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.

Blind Digital Watermarking of Integer Wavelet Transform

2012 ◽  
Vol 433-440 ◽  
pp. 5962-5966 ◽  
Author(s):  
Ding Hui Zhang ◽  
Yu Ping Wang ◽  
Jian Wei Zhang ◽  
Sai Sai Xu ◽  
You Li
Keyword(s):  
Wavelet Transform ◽  
Digital Watermarking ◽  
Jpeg Compression ◽  
Cover Image ◽  
Integer Wavelet Transform ◽  
Modulo Operation ◽  
Transform Coefficients ◽  
Integer Wavelet

In the light of JPEG compression attack, a blind digital watermarking algorithm of integer wavelet transform is proposed in this paper. Before the watermarking image is embedded, the cover image is decomposed by integer wavelet transform, and the binary watermarking image is scrambled to enhance its security. The scrambled digital watermarking is embedded into the cover image by means of modulo operation and modification of the integer wavelet transform coefficients of the cover image. The digital watermarking is extracted only by means of the modulo operation of the integer wavelet transform coefficients of the watermarked image and threshold ruling, and not depending on the original cover image. The experiments have shown that the blind digital watermarking algorithm can strongly resist JPEG compression attack.

Sign in / Sign up

Export Citation Format

Share Document