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Side-Informed Image Watermarking Scheme Based on Dither Modulation in the Frequency Domain
2013
Open Signal Processing Journal
Digital communication and media sharing have extensively increased in the last couple of years. Research is focused on protecting digital media through copyright protection. The digital media is secured by watermarking. We have developed an image watermarking technique in the frequency domain to hide secure information in the Discrete Cosine Transform (DCT) coefficients of the carrier image. DCT coefficients are modulated by Dither Modulation (DM). We have increased the modulation step to be
doi:10.2174/1876825301305010001
fatcat:7o6eeefnnzenvb3gksdqg7egcm