Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/45383
Title: An alternative watermarking scheme using sequency ordered hadamard transform (SCHT)
Authors: Chong, Nicholas Wei En.
Keywords: DRNTU::Engineering::Electrical and electronic engineering::Electronic systems::signal processing
Issue Date: 2011
Abstract: This report will explore and present the possibility of a new image watermarking scheme using the Real Conjugate Symmetric Sequency-ordered Complex Hadamard Transform (rCS-SCHT). This rCS-SCHT, which has a sequency ordered transform matrix and conjugated symmetric spectrum, has been found to achieve better results in image compression that even surpasses that of the Sequence Ordered Walsh Transform (SOWT) and the Discrete Cosine Transform (DCT) [1]. Implementation and testing of the watermarking scheme would be done purely using MATLAB. Methodology of the new scheme would be referenced from a recently developed blind watermarking scheme that uses the Fast Hadamard Transform (FHT). Testing of the new scheme mainly includes comparison of results with a similar scheme using Walsh Hadamard Transform (WHT) instead of rCS-SCHT. Watermark robustness will be measured with Peak Signal to Noise Ratio (PSNR), Normalized Correlation (NC) and number of error bits.
URI: http://hdl.handle.net/10356/45383
Rights: Nanyang Technological University
Fulltext Permission: restricted
Fulltext Availability: With Fulltext
Appears in Collections:EEE Student Reports (FYP/IA/PA/PI)

Files in This Item:
File Description SizeFormat 
eA3122-101.pdf
  Restricted Access
3.71 MBAdobe PDFView/Open

Page view(s) 50

224
checked on Sep 22, 2020

Download(s) 50

6
checked on Sep 22, 2020

Google ScholarTM

Check

Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.