1. How to submit my research paper? What’s the process of publication of my paper?
The journal receives submitted manuscripts via email only. Please submit your research paper in .doc or .pdf format to the submission email: ijeee@ejournal.net.
2. Can I submit an abstract?
The journal publishes full research papers. So only full paper submission should be considered for possible publication...[Read More]

An Efficient Blind Watermarking Method based on Significant Difference of Wavelet Tree Quantization using Adaptive Threshold

Thien Huynh The 1 and Thuong Le Tien 2
1. University of Technical Education Ho Chi Minh City, HCM City, Vietnam
2. Ho Chi Minh City University of Technology, HCM City, Vietnam
Abstract—In this research, we introduce an efficient blind watermarking method for gray image based on wavelet tree quantization using adaptive threshold in extraction process. Based on difference value between two largest coefficients, each scrambled binary watermark bit is embedded into each block which created by four LH3 coefficients and one LH4 coefficient. In extraction process, we compare difference value in each block to adaptive threshold to recover watermark bit. The quality of extracted watermark depends on the threshold which is determined by the Weighted Within-Class Variance algorithm. Performance of proposed method is represented through experimental results under various attacks such as, Histogram Equalization, Cropping, Low-pass Filtering, Gaussian noise, Salt & Pepper noise and JPEG compression. 

Index Terms—blind watermarking, 3-level DWT, significant difference, adaptive threshold, within-class
variance

Cite: Thien Huynh The and Thuong Le Tien, "An Efficient Blind Watermarking Method based on Significant Difference of Wavelet Tree Quantization using Adaptive Threshold," International Journal of Electronics and Electrical Engineering, Vol. 1, No. 2, pp. 98-103, June 2013. doi: 10.12720/ijeee.1.2.98-103
Copyright © 2012-2019 International Journal of Electronics and Electrical Engineering, All Rights Reserved