Encryption and Hiding Watermarking Using A Chaotic Modified Wavelet Transform

Mohammad, Shaimaa Sh.

doi:10.33899/csmj.2011.163645

	Encryption and Hiding Watermarking Using A Chaotic Modified Wavelet Transform
AL-Rafidain Journal of Computer Sciences and Mathematics
Article 9, Volume 8, Issue 2, 2011, Pages 87-97 PDF (607.24 K)
Document Type: Research Paper
DOI: 10.33899/csmj.2011.163645
Author
Shaimaa Sh. Mohammad
College of Computer Sciences and Mathematics University of Mosul, Iraq
Abstract
In this letter, a new digital watermarking algorithm is proposed to hide binary image watermark inside gray image to increase authentication and robustness, DWT are used in embedding because it has many features in image processing. To increase the effective of this algorithm chaotic logistic map are used to select the embedding position in host chaotically which increase the security and make it hard to be detected, experimental result which be measured by using (Mean Square error, Peak signal to noise ratio , Signal to Noise Ratio, CORLLATION) has value (0.3195, 53.0867, 45.9152, 0.9998) respectively reflect the effective of this algorithm, the watermarked image has no noticeable change, some image processing operation such as(filter ,noise and compression) are used to test the robustness which measured by calculate similarity between extracted watermark after attack and the original one, Programming based on Matlab9.
Keywords
encryption; Hiding; watermarking; wavelet transform; Chaotic

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