VLSI ARCHITECTURE AND FPGA PROTOTYPING OF A DIGITAL CAMERA FOR IMAGE SECURITY AND AUT
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VLSI ARCHITECTURE AND FPGA PROTOTYPING OF A DIGITAL CAMERA FOR IMAGE SECURITY AND AUTHENTICATIONWATERMARKING
the process that embeds data called a watermark, a tag, or label into a multimedia object such that the watermark can be detected or extracted later to make an assertion about the object. The object may be an image, audio, video, or text .In general, any watermarking scheme (algorithm) consists of three parts, such as the following:1) Watermark;2) Encoder (insertion algorithm);3) Decoder and Comparator (verification or extraction or detection algorithm)Watermarks and watermarking techniques can be divided into various categories, spatial domain and frequency domain. According to human perception, the digital watermarks can be divided into four categories, 1) Visible;2) Invisible-robust;3) Invisible-fragile;4) Dual
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