Optimizing of Spatial Domain Watermark Recovery Algorithm by Laplacian Filter
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Authors
Mehdi Alirezanejad
- Department of Computer, Firuzkooh Branch, Islamic Azad University, Firuzkooh, Iran.
Saeed Amirgholipour
- Department of Computer, Ramsar Branch, Islamic Azad University, Ramsar, I. R. Iran.
Vahid Saffari
- Department of Computer, Shiraz Branch, Islamic Azad University, Shiraz, I. R. Iran.
Moein Arab
- Department of Computer, Sharif University of technology international Campuse, Kish, I. R. Iran.
Shahin Aslani
- Department of Computer, Sharif University of technology international Campuse, Kish, I. R. Iran.
Abstract
In this paper, impact of a Laplacian filter in better watermark recovery in the spatial domain watermarking algorithms has been investigated. A Laplacian filter is an enhancement filter, this filter could be utilized to optimize extraction of the watermark information in spatial domain watermarking. The distinction between the watermark and unwatermarked part is increased by this filter. Thus, watermark could be extracted significantly better by the watermark recovery algorithm. To show effectiveness of Laplacian filter on the spatial domain watermarking algorithms, it is applied on a typical correlation based method. Several experiments are done to show that performance of correlation based watermarking algorithm is improved by applying this filter before watermark extraction procedure.
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ISRP Style
Mehdi Alirezanejad, Saeed Amirgholipour, Vahid Saffari, Moein Arab, Shahin Aslani, Optimizing of Spatial Domain Watermark Recovery Algorithm by Laplacian Filter, Journal of Mathematics and Computer Science, 13 (2014), no. 3, 247-256
AMA Style
Alirezanejad Mehdi, Amirgholipour Saeed, Saffari Vahid, Arab Moein, Aslani Shahin, Optimizing of Spatial Domain Watermark Recovery Algorithm by Laplacian Filter. J Math Comput SCI-JM. (2014); 13(3):247-256
Chicago/Turabian Style
Alirezanejad, Mehdi, Amirgholipour, Saeed, Saffari, Vahid, Arab, Moein, Aslani, Shahin. "Optimizing of Spatial Domain Watermark Recovery Algorithm by Laplacian Filter." Journal of Mathematics and Computer Science, 13, no. 3 (2014): 247-256
Keywords
- Laplacian Filter
- Digital Image Watermarking
- Correlation Based Watermarking
- Spatial Domain Watermarking.
MSC
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