Title :
A Robust Watermarking Scheme using Best Tree Wavelet Packet Transform
Author :
Rawat, Sanjay ; Bhatnagar, Gaurav ; Raman, Balasubramanian
Author_Institution :
Dept. of Math., Indian Inst. of Technol. Roorkee, Roorkee
Abstract :
In this paper a novel watermarking scheme based on wavelet packet transform (WPT) with best tree is explored. The basic idea behind the proposed scheme is to decompose the preprocessed host image via wavelet packet transform and then find the best tree by entropy based algorithm. Watermark is embedded in all frequency bands of best tree. A reliable watermark extraction scheme is developed for the extraction of watermark from the distorted images. Experimental evaluations demonstrate that the proposed scheme is robust against variety of attacks.
Keywords :
entropy codes; image coding; singular value decomposition; trees (mathematics); watermarking; wavelet transforms; SVD; best tree; entropy based algorithm; host image decomposition; reliable watermark extraction scheme; wavelet packet transform; Cost function; Discrete wavelet transforms; Entropy; Frequency domain analysis; Internet; Robustness; Watermarking; Wavelet analysis; Wavelet packets; Wavelet transforms;
Conference_Titel :
Advance Computing Conference, 2009. IACC 2009. IEEE International
Conference_Location :
Patiala
Print_ISBN :
978-1-4244-2927-1
Electronic_ISBN :
978-1-4244-2928-8
DOI :
10.1109/IADCC.2009.4809132
