Type of Document	Master's Thesis
Author	Ashfaq, Naveed Shaik
Author's Email Address	ashaik1@lsu.edu
URN	etd-04082005-125138
Title	Improved Watermarking Scheme Using Decimal Sequences
Degree	Master of Science in Electrical Engineering (M.S.E.E.)
Department	Electrical & Computer Engineering
Advisory Committee	Advisor Name Title Subhash Kak Committee Chair Suresh Rai Committee Member Xue-Bin Liang Committee Member
Keywords	spread spectrum image sequences pseudorandom
Date of Defense	2005-03-29
Availability	unrestricted
Abstract This thesis improves upon the work carried out by Mandhani on decimal sequence watermarking showing that the embedding and decoding algorithms used by Mandhani are not robust. We next specify improvements to these algorithms so that the peak signal to noise ratio (PSNR) is maximized and the distortion introduced in the image due to the embedding is minimized. By exploiting the cross correlation property of decimal sequences, the concept of embedding more than one watermark in the same cover image has been investigated. A comparison between the PSNRs for decimal sequence watermarking and other pseudorandom sequences has been made.
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