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Digital Image Watermarking:A Review
Digital watermarking of multimedia content has become a very active research area over the last several years. Watermarking is a very important field for copyrights of various electronic documents and media. With images widely available on the Internet, it may sometimes be desirable to use watermarks. Digital watermarking is the processing of combined information into a digital signal. A watermark is a secondary image, which is overlaid on the host image, and provides a means of protecting the image. It acts as a digital signature, giving the image a sense of ownership or authenticity. Digital watermarking technique is very impressive for image authentication or protection for attacks. In this paper we aim to present a survey on different types of digital watermarks and methods to do image watermarking. Problems and challenges to produce watermarked images are also analyzed and reported. given in the document for the papers to be published. You can use this document as both an instruction set and as a template into which you can type your own text.
Keywords
Digital Watermark, Steganography, Authentication, Frequency Domain, Spatial Domain, Least Significant Bit.
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