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Watermarking is a technique used to hide data or identifying information within digital. With the advent of internet, creation and delivery of digital data (images) has grown many fold. With this, issues like protection of rights of the current and proving ownership arises. Digital watermarking came as a technique and a tool to overcome shortcomings of current copyright laws for digital data. To prove ownership and protect right, a watermark is embedded in data but to save watermark from counterfeiters we need to find locations which are invariant to all kind of attacks (rotation, expansion, compression, cropping, filtering and blurring)
Keywords: Watermarking Algorithm, Spread Spectrum, Invisible Watermarking
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