Modified algorithm for image watermarking using 2D-DCT and elgamal cryptosystem / Nur Azien Yazid, Kamilah Abdullah and Suhaila Abd Halim
Image watermarking embeds identifying information in an image in such a manner that it cannot easily be removed. For the past several years, image digital watermarking has become a necessary element used for hid ing secret image and enabling secured communication such as privacy, confidentiality, au...
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| Format: | Article |
| Language: | English |
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Universiti Teknologi MARA Cawangan Pulau Pinang
2019
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| Online Access: | https://ir.uitm.edu.my/id/eprint/28904/ |
| _version_ | 1848807148994166784 |
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| author | Yazid, Nur Azien Abdullah, Kamilah Abd Halim, Suhaila |
| author_facet | Yazid, Nur Azien Abdullah, Kamilah Abd Halim, Suhaila |
| author_sort | Yazid, Nur Azien |
| building | UiTM Institutional Repository |
| collection | Online Access |
| description | Image watermarking embeds identifying information in an image in such a manner that it cannot easily be removed. For the past several years, image digital watermarking has become a necessary element used for hid ing secret image and enabling secured communication such as privacy, confidentiality, authentication and data integrity. Although numerous watermarking schemes are present in grayscale images, the present work focuses on the RGB color image. This study proposed a new hybrid method that would satisfy the essential needs of modern image watermarking. The color image watermarking is based on the 2D Discrete Cosine Transform and Egamal cryptosystem.The 2D Discrete Cosine Transform depends on the matrix products, while the ElGamal cryptosystem depends on the discrete logarithm problem. The cryptosystem is combined with existing Arnold transform in watermarking algorithm to enhance the security of secret image. Value of Peak Signal to Noise Ratio was taken as performance evaluation parameters. On the whole, the performance evaluation shows that combining the two algorithms improved the performance of image watermarking. |
| first_indexed | 2025-11-14T22:38:13Z |
| format | Article |
| id | uitm-28904 |
| institution | Universiti Teknologi MARA |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T22:38:13Z |
| publishDate | 2019 |
| publisher | Universiti Teknologi MARA Cawangan Pulau Pinang |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | uitm-289042020-03-19T06:28:41Z https://ir.uitm.edu.my/id/eprint/28904/ Modified algorithm for image watermarking using 2D-DCT and elgamal cryptosystem / Nur Azien Yazid, Kamilah Abdullah and Suhaila Abd Halim esteem Yazid, Nur Azien Abdullah, Kamilah Abd Halim, Suhaila Cryptography. Access control. Computer security Algorithms System design Image watermarking embeds identifying information in an image in such a manner that it cannot easily be removed. For the past several years, image digital watermarking has become a necessary element used for hid ing secret image and enabling secured communication such as privacy, confidentiality, authentication and data integrity. Although numerous watermarking schemes are present in grayscale images, the present work focuses on the RGB color image. This study proposed a new hybrid method that would satisfy the essential needs of modern image watermarking. The color image watermarking is based on the 2D Discrete Cosine Transform and Egamal cryptosystem.The 2D Discrete Cosine Transform depends on the matrix products, while the ElGamal cryptosystem depends on the discrete logarithm problem. The cryptosystem is combined with existing Arnold transform in watermarking algorithm to enhance the security of secret image. Value of Peak Signal to Noise Ratio was taken as performance evaluation parameters. On the whole, the performance evaluation shows that combining the two algorithms improved the performance of image watermarking. Universiti Teknologi MARA Cawangan Pulau Pinang 2019-06 Article PeerReviewed text en https://ir.uitm.edu.my/id/eprint/28904/1/28904.pdf Yazid, Nur Azien and Abdullah, Kamilah and Abd Halim, Suhaila (2019) Modified algorithm for image watermarking using 2D-DCT and elgamal cryptosystem / Nur Azien Yazid, Kamilah Abdullah and Suhaila Abd Halim. (2019) ESTEEM Academic Journal <https://ir.uitm.edu.my/view/publication/ESTEEM_Academic_Journal.html>, 15. pp. 44-55. ISSN 2289-4934 https://uppp.uitm.edu.my |
| spellingShingle | Cryptography. Access control. Computer security Algorithms System design Yazid, Nur Azien Abdullah, Kamilah Abd Halim, Suhaila Modified algorithm for image watermarking using 2D-DCT and elgamal cryptosystem / Nur Azien Yazid, Kamilah Abdullah and Suhaila Abd Halim |
| title | Modified algorithm for image watermarking using 2D-DCT and elgamal cryptosystem / Nur Azien Yazid, Kamilah Abdullah and Suhaila Abd Halim |
| title_full | Modified algorithm for image watermarking using 2D-DCT and elgamal cryptosystem / Nur Azien Yazid, Kamilah Abdullah and Suhaila Abd Halim |
| title_fullStr | Modified algorithm for image watermarking using 2D-DCT and elgamal cryptosystem / Nur Azien Yazid, Kamilah Abdullah and Suhaila Abd Halim |
| title_full_unstemmed | Modified algorithm for image watermarking using 2D-DCT and elgamal cryptosystem / Nur Azien Yazid, Kamilah Abdullah and Suhaila Abd Halim |
| title_short | Modified algorithm for image watermarking using 2D-DCT and elgamal cryptosystem / Nur Azien Yazid, Kamilah Abdullah and Suhaila Abd Halim |
| title_sort | modified algorithm for image watermarking using 2d-dct and elgamal cryptosystem / nur azien yazid, kamilah abdullah and suhaila abd halim |
| topic | Cryptography. Access control. Computer security Algorithms System design |
| url | https://ir.uitm.edu.my/id/eprint/28904/ https://ir.uitm.edu.my/id/eprint/28904/ |