Localization watermarking for authentication of text images in Quran
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The phenomenon of widespread usage of smart phone has encouraged many android applications to be produced, by free or paid. Nowadays, with the trend of communicating through social networking applications and social networking sites, Muslims tend to share the image of verse from the Quran applications to the sites. Several concerns regarding security and copy control of the verse text image have aroused, and among the solution to this issue is watermarking. This paper has conducted a research proposing an authentication fragile watermark with spiral manner which shows a good numbering system of embedding. The watermarking scheme is imperceptible and can embed high capacity of data. The average Peak-signal-of-Noise-Ratio (PSNR) value of embedded image is 67.06dB and the average operating time is 1.29 seconds. Subsequently, it proposed a localization and restoration watermarking scheme to be applied in the Quran application as a function before sharing.