An alternative watermarking scheme using sequency ordered hadamard transform (SCHT)
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...
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| Format: | Final Year Project (FYP) |
| Language: | English |
| Published: |
2011
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| Online Access: | http://hdl.handle.net/10356/45383 |
| _version_ | 1826120363746000896 |
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| author | Chong, Nicholas Wei En. |
| author2 | Ng Boon Poh |
| author_facet | Ng Boon Poh Chong, Nicholas Wei En. |
| author_sort | Chong, Nicholas Wei En. |
| collection | NTU |
| description | 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. |
| first_indexed | 2024-10-01T05:14:58Z |
| format | Final Year Project (FYP) |
| id | ntu-10356/45383 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:14:58Z |
| publishDate | 2011 |
| record_format | dspace |
| spelling | ntu-10356/453832023-07-07T15:48:27Z An alternative watermarking scheme using sequency ordered hadamard transform (SCHT) Chong, Nicholas Wei En. Ng Boon Poh School of Electrical and Electronic Engineering Aye Aung DRNTU::Engineering::Electrical and electronic engineering::Electronic systems::signal processing 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. Bachelor of Engineering 2011-06-13T04:10:07Z 2011-06-13T04:10:07Z 2011 2011 Final Year Project (FYP) http://hdl.handle.net/10356/45383 en Nanyang Technological University 75 p. application/pdf |
| spellingShingle | DRNTU::Engineering::Electrical and electronic engineering::Electronic systems::signal processing Chong, Nicholas Wei En. An alternative watermarking scheme using sequency ordered hadamard transform (SCHT) |
| title | An alternative watermarking scheme using sequency ordered hadamard transform (SCHT) |
| title_full | An alternative watermarking scheme using sequency ordered hadamard transform (SCHT) |
| title_fullStr | An alternative watermarking scheme using sequency ordered hadamard transform (SCHT) |
| title_full_unstemmed | An alternative watermarking scheme using sequency ordered hadamard transform (SCHT) |
| title_short | An alternative watermarking scheme using sequency ordered hadamard transform (SCHT) |
| title_sort | alternative watermarking scheme using sequency ordered hadamard transform scht |
| topic | DRNTU::Engineering::Electrical and electronic engineering::Electronic systems::signal processing |
| url | http://hdl.handle.net/10356/45383 |
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