Digital Watermarking Techniques and its Application towards Digital Halal Certificate: A Survey

The ease of alterations, distributions and duplications of a digital data makes the multimedia security to be crucial. Digital image watermarking is used in the multimedia security field in order to secure the ownership of a multimedia content from being forged by the illegal distribution and duplication. This survey paper upholds the techniques and algorithms that is used in digital image watermarking. In brief, digital image watermarking will secure the secret information by embedding it in the original data in order to defend the copyrights and also the ownership of the original multimedia data. Spatial domain or on the medium of the wavelets are types of techniques in digital image watermarking. The spatial domains works on the pixels of the image while the frequency domains process the transform coefficient of multimedia data. Each types of techniques represents different types of implementation. In this survey paper, the advantages and disadvantages of both techniques will be explained further as it is the most crucial part for this title. The watermarking architecture and the types of attacks towards the watermarked media is also further explained in this paper. This paper also includes the previous study regarding the digital watermarking towards the Malaysian Halal Certificate using a different methods and algorithms such as Spread Spectrum. Several previous papers has been referred to in the completion of this review paper to ensure the stability of this research.