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In this paper a watermarking-based color image authentication with detection and recovery capability is proposed, in which a Halftone image is used as an approximated version of the luminance channel (Y) and a coded version of the coefficients of the Two Dimensional Discrete Cosine Transform of the chrominance channels (Cb, Cr) of the YCbCr color space are used as watermark signal. The luminance and...
A watermarking method for color image content authentication with localization and recovery capability of the tampered areas is proposed, in which a halftone image is used as approximate version for the luminance information and the coefficients of the Discrete Cosine Transform (DCT) of the two chrominance channels are encoded and used as approximate version of color information. The luminance and...
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